Microsoft Word - MartinezAdrian_7.1.docx EuroAmerican  Journal  of  Applied  Linguistics  and  Languages   Special  Issue,  Volume  7,  Issue  1,  February  2020,  59-­‐77   ISSN  2376-­‐905X     DOI  http://dx.doi.org/10.21283/2376905X.11.191   www.e-­‐journall.org     © Martínez-Adrián 2020. This work is licensed under a Creative Commons Attribution 4.0 International License.       The  use  of  previously  known  languages  and  target  language  (English)   during  task-­‐based  interaction:  A  pseudolongitudinal  study  of     primary-­‐school  CLIL  learners         MARÍA  MARTÍNEZ-­‐ADRIÁN   The  University  of  the  Basque  Country         Received  3  May  2019;  received  in  revised  form  8  July  2019;  accepted  15  August  2019   ABSTRACT EN (Pseudo)longitudinal studies of the use of previously known languages (PKL) and the target language (TL) during interaction are still scarce in Content and Language Integrated Learning (CLIL) contexts, particularly those with young learners. This paper examines the use of PKLs (Basque-Spanish) and the TL English in various categories (appeals for assistance- clarification requests-metacomments-discourse markers-private speech) in two groups of CLIL learners (grade 5 and 6) during dyadic interaction. A greater use of PKLs in older learners was found, especially in less cooperative and more external to the task strategies. As regards TL use, both groups performed similarly, except for metacomments, where younger learners made a slightly higher use. When comparing PKLs to TL use, both grade learners resorted to Basque-Spanish more frequently than to English, except for metacomments. Learners seem to use their language repertoire for task-management purposes. Nonetheless, they still resort to PKLs to keep the flow of speech. Key words:  CLIL, USE OF PREVIOUSLY KNOWN LANGUAGES, TASK-BASED INTERACTION, PRIMARY-SCHOOL LEARNERS, L3 ENGLISH ES Los estudios pseudolongitudinales sobre el uso de lenguas previamente conocidas (LPCs) y de la lengua meta (LM) en tareas de interacción son aún escasos en contextos de Aprendizaje de Contenidos y Lenguas Extranjeras (AICLE), y más aún con jóvenes aprendices. Este trabajo examina el uso de LPCs (Euskera-Castellano) y la LM (Inglés) en varias categorías (peticiones de ayuda-peticiones de clarificación-metacomentarios- marcadores de discurso-habla privada) en dos grupos de aprendices AICLE (5º y 6º curso) durante una interacción diádica. Se encontró un uso mayor de LPCs en el grupo de mayor edad, especialmente en estrategias menos cooperativas y más externas a la tarea. Con respecto al uso de la LM, ambos grupos tuvieron resultados similares, excepto en los metacomentarios, donde los estudiantes más jóvenes la usaron ligeramente más. Al comparar LPCs con LM, los estudiantes de ambos cursos recurrieron a las LPCs con más frecuencia que al inglés, excepto en los metacomentarios. Los estudiantes parecen utilizar su repertorio lingüístico para fines de gestión de tareas, pero aún recurren a las LPCs para mantener el flujo del habla. Palabras clave: AICLE, USO DE IDIOMAS CONOCIDOS, TAREAS DE INTERACCIÓN, ESTUDIANTES DE EDUCACIÓN PRIMARIA, INGLÉS COMO L3 IT Gli studi (pseudo)longitudinali sull'uso delle lingue già note e della lingua d’arrivo (TL) in interazione sono ancora scarsi nei contesti di apprendimento integrato di lingua e contenuto (CLIL), in particolare quelli con apprendenti di giovane età. Questo lavoro esamina l'uso di lingue già note (basco-spagnolo) e dell'inglese come TL in varie categorie (richieste di assistenza e di chiarimenti, metacommenti, marcatori discorsivi di discorsi privati) in due gruppi di studenti CLIL (classi di 5a elementare e 1a media) durante l'interazione diadica. È emerso un maggiore utilizzo delle lingue già note nei discenti più grandi, soprattutto nelle strategie meno collaborative e più esterne al task. In merito all’uso della lingua di arrivo, entrambi i gruppi hanno agito similmente, ad eccezione dei metacommenti, che gli studenti più giovani hanno usato leggermente di più. Quando si confronta l’uso delle lingue già note con quello della TL entrambi i gruppi fanno ricorso allo spagnolo-basco più frequentemente che all'inglese, ad eccezione dei metacommenti. Gli studenti sembrano usare il loro repertorio linguistico per la gestione dei task. Tuttavia, ricorrono ancora alle lingue già note per mantenere il flusso del discorso. Parole chiave: CLIL, USO DI LINGUE GIÀ NOTE, INTERAZIONE BASATA SUI TASK, STUDENTI DELLE SCUOLE ELEMENTARI, INGLESE COME L3     *    María  Martínez-­‐Adrián,  The  University  of  the  Basque  Country                    maria.martineza@ehu.eus     MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 60   1.  Introduction   The   investigation   of   the   use   of   previously   known   languages   (henceforth   PKL)   during   task-­‐based   interaction  has  attracted  the  attention  of  researchers  in  both  English  as  a  second  language  (ESL)  and  English   as   a   foreign   language   (EFL)   settings.   Very   recently,   the   emergence   of   Content   and   Language   Integrated   Learning   (CLIL)   programmes  has   led   to   a   growing  body   of   research   studies   analyzing   the   effect   of   a  more   natural   and   intense   input   provided   in   these   settings   on   the   use   of   previously   known   language-­‐based   strategies   (i.e.,  García  Mayo  &  Hidalgo  Gordo,  2017;  García  Mayo  &  Lázaro   Ibarrola,   2015;  Lázaro   Ibarrola,   2016;  Martínez-­‐Adrián,  in  press;  Martínez-­‐Adrián  &  Gutiérrez-­‐Mangado,  2015a).  Most  of  these  investigations   have  compared  CLIL  learners  to  non-­‐CLIL  learners,  but  (pseudo)longitudinal  studies  of  CLIL  learners  across   age  and  proficiency  (Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2018,  2019;  Lázaro  Ibarrola  &  García  Mayo,  2012),   which  could  shed  more  light  on  the  development  of  strategy  use,  are  still  few  in  number  in  CLIL  settings,  and   even  more  limited  with  young  leaners  (Azkarai  &  Imaz  Agirre,  2017).  In  addition,  a  more  detailed  analysis  of   the  different  functions  and  patterns  of  both  PKL  and  target  language  (TL)  use  is  needed.  This  paper  will  try  to   fill   these   gaps   by   examining   the   use   of   PKL   (Basque   and   Spanish)   and   the   TL   (English)   in   appeals   for   assistance,   clarification   requests,   metacomments,   discourse   markers   and   private   speech   in   two   different   age/proficiency   groups  of   primary   school   learners   (grade  5   and  6)   immersed   in   a   CLIL   context   during   the   performance  of  a  communicative  task  in  dyads.  The  article  is  structured  as  follows:  the  first  section  presents   an   overview   of   the   literature   as   regards   the   use   of   PKL   during   oral   production.   Research   questions   are   subsequently  addressed  in  Section  2,  while  the  methodology  is  described  in  Section  3.  Results  are  presented   and   discussed   in   Sections   4   and   5,   respectively.   The   last   section   concludes   the   paper   and   offers   future   research  lines.     2.  Literature  review   2.1.  The  use  of  previously  known  languages  during  task-­‐based  interaction   Research   on   task-­‐based   interaction   has   shown   that   the   use   of   PKL   during   the   performance   of   communicative   tasks   is  more   the   norm   rather   than   the   exception   and   has   been   reported   to   have   positive   effects  for  language  learning  (Storch  &  Aldosari,  2010).  To  the  present  date,  a  great  bulk  of  studies  in  ESL  and   EFL  settings  with  mainstream  learners  has  been  conducted,  particularly  with  adults  (i.e.,  Alegría  de  la  Colina   &   García   Mayo,   2009;   Azkarai,   2015;   Azkarai   &   García   Mayo,   2015;   Di   Camilla   &   Antón,   2012;   Storch   &   Aldosari,  2010;  Swain  &  Lapkin,  2000).  These  studies  have  focused  on  the  extent  of  use  and  functions  of  PKL.   In   terms   of   amount,   adults   have   not   been   found   to   draw   extensively   on   prior   linguistic   experience.   With   regard   to   functions,   learners  mainly   employ   PKL   for   a  metacognitive   function,   phatics   and   for   vocabulary   searches   (i.e.,   Alegría   de   la   Colina   &   García  Mayo,   2009;   Azkarai   &   García  Mayo,   2015;   Storch   &   Aldosari,   2010).  The  extent  to  which  learners  rely  on  their  previous  linguistic  experience  seems  to  depend  on  a  variety   of   factors   such   as   proficiency   (Di   Camilla  &  Antón,   2012;   Storch  &  Aldosari,   2010;   Swain  &  Lapkin,   2000),   onset  age  (Cenoz,  2001,  2003),  gender  (Azkarai,  2015;  Ross-­‐Feldman,  2005),  task-­‐type  (Alegría  de  la  Colina  &   García  Mayo,   2009;   Storch   &   Aldosari,   2010;   Storch   &  Wigglesworth,   2003)   and   task-­‐modality   (Azkarai   &   García  Mayo,   2015).  More   limited   research   is   available   on   younger   learners   (Pinter,   2007;   Shintani,   2012,   2014;  Tognini  &  Oliver,  2012).  In  particular,  studies  providing  a  detailed  examination  of  the  functions  of  PKL,   as  documented  in  research  on  adult  learners,  are  nearly  non-­‐existent  for  younger  learners.       2.2.  Research  in  CLIL  settings   The   use   of   PKL   when   performing   communicative   tasks   in   English   has   recently   been   the   focus   of   several  studies  conducted  in  CLIL  settings.  In  CLIL  programmes,  more  intense  and  natural  input  is  provided   to   students   as,   in   addition   to   English   as   a   school   subject,   they   receive   content   lessons   through   the   foreign   language  (Coyle,  2007;  Dalton-­‐Puffer,  2011).  The  greater  amount  of  exposure  received  in  these  programmes   leads   the   learner   to  attain  a  higher   command  of   the  TL   (Lasagabaster,  2008;  Martínez-­‐Adrián  &  Gutiérrez-­‐ Mangado,   2015b;   Navés   &   Victori,   2010;   Ruiz   de   Zarobe,   2008)   and   in   turn   to   a   lower   reliance   on   PKL   (Gallardo-­‐del-­‐Puerto  &  Gómez-­‐Lacabex,  2013,  2017;  García  Mayo  &  Lázaro   Ibarrola,  2015;  Lázaro   Ibarrola,   2016;  Martínez-­‐Adrián,  in  press;  Martínez-­‐Adrián  &  Gutiérrez-­‐Mangado,  2015a).  Some  of  these  investigations   on   the   use   of   previously   known   language-­‐based   strategies   during   oral   production   have   compared   CLIL   to   non-­‐CLIL   learners   (Gallardo   del   Puerto,   2015;   García  Mayo  &  Hidalgo   Gordo,   2017;   García  Mayo  &   Lázaro   Ibarrola,   2015;   Lázaro   Ibarrola,   2016;   Martínez-­‐Adrián,   in   press;   Martínez-­‐Adrián   &   Gutiérrez-­‐Mangado,   2015a;  Pladevall  Ballester  &  Vraciu,  2017)  and  others,  lower  in  number,  offer  (pseudo)longitudinal  studies  of   THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 61   CLIL  learners  (i.e.,  Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2018,  2019;  Lázaro  Ibarrola  &  García  Mayo,  2012).   Among   these   studies,   either   comparative   or   (pseudo)longitudinal   in   nature,   some   have   centered   on   secondary-­‐school   learners   (i.e.,   Arratibel-­‐Irazusta   &   Martínez-­‐Adrián,   2018,   2019;   Lázaro   Ibarrola,   2016;   Lázaro   Ibarrola  &  García  Mayo,  2012;  Martínez-­‐Adrián  &  Gutiérrez-­‐Mangado,  2015b)  while  primary-­‐school   learners   are   currently   the   focus   of   several   investigations   (i.e.,   Azkarai   &   Imaz   Agirre,   2017;   Gallardo   del   Puerto,  2015;  García  Mayo  &  Hidalgo  Gordo,  2017;  García  Mayo  &  Lázaro  Ibarrola,  2015;  Gutiérrez-­‐Mangado,   2015;  Martínez-­‐Adrián,  in  press).  In  fact,  several  researchers  have  called  for  more  research  on  the  acquisition   of  foreign  languages  by  primary-­‐school  learners  in  an  effort  to  maximize  their  learning  opportunities  (García   Mayo,  2018).  CLIL   studies  on   the  use  of  PKL  during   interaction  have  mainly  examined  age  and  proficiency   effects   (Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,   2018,   2019;   Lázaro   Ibarrola  &   García  Mayo,   2012;   Pladevall   Ballester   &   Vraciu,   2017),   whereas   findings   for   gender   and   task   type   have   not   been   analysed   in   depth   (Azkarai  &  García  Mayo,  2017;  Azkarai  &  Imaz  Agirre,  2017).     In  the  case  of  CLIL  studies  with  secondary-­‐school  learners,  Martínez-­‐Adrián  and  Gutiérrez-­‐Mangado   (2015a)   compared   the   oral   production   of   a   group   of   CLIL   learners   to   a   group   of   non-­‐CLIL   learners.   Participants  performed  an  oral  narration  task  in  front  of  a  researcher,  which  was  subsequently  examined  in   terms   of   the   use   of   the   first   languages   (L1s)   (Basque   and   Spanish)   in   interactional   strategies   and   transfer   lapses.  A   lower  use  of   the  L1s  and  a  greater  use  of   the  TL  (English)  was   found   in  the  case  of  CLIL   learners.   This  study  also  confirmed  a  negative  correlation  between  general  proficiency,  lexical  richness  and  use  of  PKL.   In   addition   to   the   use   of   PKL   in   interactional   strategies,   other   comparative   studies  with   secondary-­‐school   learners  have  analysed  the  production  of  discourse  markers.  Lázaro  Ibarrola  (2016)  compared  a  group  of  15   CLIL  learners  to  a  group  of  11  non-­‐CLIL  learners  at  Time  1  when  they  were  in  their  2nd  year  of  compulsory   secondary  education  and  subsequently  at  Time  2  when  they  were  in  the  4th  year.  All  instances  of  discourse   markers   including   those   in   English   and   those   in   Basque   and   Spanish   were   considered.   In   addition,   the   learners’   use   of   other   hesitation   phenomena,   namely,   non-­‐lexical   discourse   markers   was   also   taken   into   account.  The  use  of  the  L1s  (Basque  and  Spanish)  did  not  decrease  with  time  and  no  differences  were  found   between  CLIL  and  non-­‐CLIL   (Basque  and  Spanish)   learners.  Few   instances  of  discourse  markers   in  English   were  produced,   the  most  common  of   them  being   ‘well’,  which   is  employed   in   textbooks  and  teacher   talk.  A   difference  was  found  between  CLIL  and  non-­‐CLIL  learners  in  the  use  of  non-­‐lexical  discourse  markers,  with  a   higher  production  on  the  part  of  non-­‐CLIL  learners.  CLIL  students  were  able  to  use  discourse  markers  in  the   L1s  while  non-­‐CLIL  learners  were  in  a  previous  stage  of  development  and  use  more  hesitation  phenomena.     Other  investigations  with  secondary  school   learners  are  (pseudo)longitudinal  studies  of  one  or  two   groups   of   CLIL   learners.   Lázaro   Ibarrola   and   García   Mayo   (2012)   tackled   the   use   of   the   L1   in   discourse   markers   and  appeals   for   assistance   as  well   as   the  morphosyntactic  development  of   a   group  of   15-­‐year-­‐old   students  immersed  in  a  CLIL  context  in  the  Basque  Country.  The  use  of  the  L1  significantly  decreased  over  the   two-­‐year   period   investigated,   while   morphosyntax   experienced   significant   development.   However,   the   production   of   English   discourse   markers   was   uncommon.   Arratibel-­‐Irazusta   and   Martínez-­‐Adrián   (2018)   explored  the  use  of  PKL  (L1  Spanish/second  language  (L2)  Basque)  in  appeals  for  assistance,  transfer  lapses,   codes-­‐switching  and  discourse  markers  in  an  oral  narration  task  in  two  different  age/proficiency  CLIL  groups   of  third  language  (L3)  English  learners.  Both  groups  shared  the  same  onset  age  (Year  3)  but  differed  in  length   and  amount  of  exposure.  The  analysis  of  the  results  did  not  yield  statistically  significant  differences  between   the   groups   except   for   the   production   of   foreignizings,   which   were   more   frequent   in   the   younger   group.   However,  the  intragroup  analysis  revealed  how  less  proficient  learners  preferred  to  use  more  implicit  appeals   and  employed  borrowings  and  foreignizings  in  similar  proportions,  while  older  learners  preferred  to  use  both   explicit  and  implicit  strategies  and  showed  a  tendency  to  use  borrowings  (a  more  communicative  option).  As   for   the   different   categories   examined,   discourse   markers   were   the   most   common   manifestation   of   prior   linguistic   experience.   In   a   follow-­‐up   study   involving   the   same   groups   of   learners,   Arratibel-­‐Irazusta   and   Martínez-­‐Adrián   (2019)  delved   into   the  use   of   previous   linguistic   knowledge   (L1   Spanish/L2  Basque)   as   a   communication  strategy  (appeals  for  assistance  and  transfer)  together  with  TL-­‐based  strategies  (holistic  and   analytic   strategies).   No   differences   between   the   two   age/proficiency   groups   were   observed.   As   for   the   distribution  of  categories,  holistic  strategies  were  the  most  employed,  a  finding  attributed  to  the  overriding   effect   of   CLIL   as   reported   in   other   investigations   with   young   learners   that   have   analysed   self-­‐reported   opinions   (Martínez-­‐Adrián,   Gallardo-­‐del-­‐Puerto,   &   Basterrechea,   2019).   In   other   words,   even   if   these   participants   were   considered   low-­‐proficient   learners,   they   were   exploiting   strategies   more   typical   of   advanced  learners,  a  result  that  might  be  due  to  the  type  of  input  received  in  their  CLIL  lessons,  which  is  full   of  reformulations  in  the  TL.  In  addition,  the  use  of  previously  known  language-­‐based  strategies  was  found  to   MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 62   correlate   negatively   with   both   the   level   of   proficiency   and   receptive   vocabulary.   However,   no   significant   correlations  were   found   in  the  case  of  TL-­‐based  strategies.  Likewise,   the  analysis  did  not  yield  a  significant   correlation  between   the  use  of  PKL  and   the  use  of  TL-­‐based  strategies.  Thus,   at   this  point  of  development,   previously  known  language-­‐based  strategies  still  coexist  with  the  use  of  TL-­‐based  strategies.   As  regards  CLIL  studies  conducted  with  young  learners,  most  of  them  have  examined  the  effect  of  the   instructional   context   (CLIL   vs.   Non-­‐CLIL).   These   studies,   with   a   cross-­‐sectional   or   (pseudo)longitudinal   design,  have  compared  CLIL  to  non-­‐CLIL  learners  (Gallardo-­‐del-­‐Puerto,  2015;  García  Mayo  &  Lázaro  Ibarrola,   2015;   García   Mayo   &   Hidalgo   Gordo,   2017;   García   Mayo   &   Imaz   Agirre,   2017;   Gutiérrez-­‐Mangado,   2015;   Martínez-­‐Adrián,  in  press;  Pladevall  Ballester  &  Vraciu,  2017).     Gallardo-­‐del-­‐Puerto   (2015)   looked   into   data   from   primary   school   learners   performing   a   peer   interaction  task.  Two  groups  of  CLIL  learners  in  grades  4  and  6  were  compared  to  two  age-­‐matched  non-­‐CLIL   learners   in   terms   of   their   production   of   codeswitching   and   transfer   lapses   in   a   dyadic   story-­‐telling   task.   Younger  and  older  CLIL   learners  produced   fewer   instances  of   codeswitching  and   transfer   lapses   than   their   non-­‐CLIL  counterparts,   these  differences  reaching  significance  only   in   the  case  of   the  older   learners.  As   for   the   distribution   of   functions,   codeswitching,   borrowings   and   foreignizings  were   far  more   frequent   in   non-­‐ CLIL  than  in  CLIL,  while  CLIL  learners  produced  more  calques  than  non-­‐CLIL  students.  This  study  contrasts   with  previous   investigations   that  claimed   that   foreignizings  are  characteristic  of  higher  proficiency  (=CLIL)   learners  (Agustín  Llach,  2014;  Celaya,  2008;  Celaya  &  Ruiz  de  Zarobe,  2010).   Martínez-­‐Adrián   (in   press)   explored   the   use   of   interactional   strategies   (appeals   for   assistance,   clarification   requests   and   metacomments)   in   the   L1   (Spanish)   and   the   TL   (English)   in   the   same   sample   analyzed   by   Gallardo-­‐del-­‐Puerto   (2015).   The   results   indicated   that   NON-­‐CLIL   learners   produced   more   instances  of  L1  use  in  interactional  strategies  and  that  greater  differences  emerged  as  grade  level  increased.   In   addition,  metacomments  were   the  most   common  manifestation   of   L1  use   in   both   years   in   the  non-­‐CLIL   groups,  which  suggested  that  non-­‐CLIL  learners  were  not  so  accustomed  to  interacting  in  the  TL  and  not  so   well   equipped   to   perform   content   tasks   in   the  TL.   A   qualitative   inspection   of   the   results   also   showed   that   some  differences  between  groups  in  their  preference  for  either  the  L1  or  the  TL  existed  in  the  case  of  appeals   and   clarification   requests.  Nevertheless,  metacomments  were   always  produced   in   the   L1   in   both   groups,   a   finding  in  line  with  previous  classroom  observation  data  (Gené  Gil,  Juan  Garau,  &  Salazar  Noguera,  2012).   Using  the  same  sample  as   in  Gallardo-­‐del-­‐Puerto  (2015)  and  Martínez-­‐Adrián  (in  press),  Gutiérrez-­‐ Mangado  (2015)  investigated  the  pseudolongitudinal  development  of  CLIL  and  non-­‐CLIL  learners  as  regards   L1  use  in  interactional  strategies,  transfer  lapses  and  codeswitching.  Non-­‐CLIL  learners  used  the  L1  in  these   three  categories  in  the  two-­‐year  period  examined,  while  a  decrease  in  appeals  for  assistance  and  an  increase   in  borrowings  was  attested  in  the  CLIL  learners.  The  analysis  of  the  data  indicated  that  older  learners  seemed   to  favour  more  uncooperative  strategies  rather  than  more  cooperative  ones  (i.e.,  appeals).   García  Mayo  and  Lázaro  Ibarrola  (2015)  studied  the  effect  of  CLIL  and  age  in  the  oral  interaction  of   40  age-­‐  and  proficiency-­‐matched  dyads  in  terms  of  conversational  adjustments,  repetitions  and  L1  use.  CLIL   learners  displayed   slightly  higher   linguistic   abilities,   a   finding   supporting  previous   studies   comparing  CLIL   and  non-­‐CLIL   learners  and  were   found   to  negotiate  more  and   to   resort   to   the  L1   less   frequently   than  non-­‐ CLIL  learners.  As  for  the  effect  of  age,  older  children  in  both  contexts  were  reported  to  negotiate  less  and  to   use  the  L1  more  frequently  than  younger  children.   García  Mayo  and  Hidalgo  Gordo   (2017)   compared  a  group  of  CLIL   learners   to  a  group  of   non-­‐CLIL   learners  at  Time  1,  when  they  were   in  the  3rd  year  of  primary  education  and  at  Time  2,  when  they  were   in   their  4th  year.  Both  groups  completed  a  jigsaw  task  that  was  subsequently  codified  according  to  the  following   L1  functions:  metacognitive  talk,  vocabulary  (appeals,  borrowings  and  foreignizings)  and  discourse  markers.   The  examination  of  the  results  revealed  that  L1  use  as  a  whole  was  quite  limited  at  both  testing  times,  but  a   greater  use  was  observed  at  Time  2  in  both  groups,  even  though  it  only  reached  significance  in  the  non-­‐CLIL   group.  Vocabulary  was  the  function  most  served  by  the  L1  in  both  groups  in  the  two  school  years,  a  finding  in   line  with  other  investigations  exploring  young  learners  in  a  CLIL  setting  (Azkarai  &  García  Mayo,  2017).  As  for   the   effect   of   the   instructional   setting,   non-­‐CLIL   learners   relied   on   the   L1   to   a   greater   extent   than   CLIL   learners,   especially   in   the   case   of   learners’   use   of   the   L1   for   vocabulary   purposes.   When   dealing   with   metacognitive  talk  and  discourse  markers,  the  instructional  setting  did  not  have  a  great  influence.  As  regards   the  effect  of  age  on  functions,  only  a  statistically  significant  difference  was  found  in  the  metacognitive  use  in   favour  of  the  older  non-­‐CLIL  group.     These  results  are  partially  in  line  with  García  Mayo  and  Imaz  Agirre  (2017)  who  also  considered  the   impact  of   the   learning  context   (CLIL  vs.  non-­‐CLIL)  on  L1  use  adopting  a   longitudinal  perspective.  27  dyads   THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 63   participated  in  the  study.  In  particular,  two  groups  of  CLIL  learners  were  compared  to  two  groups  of  non-­‐CLIL   learners   at   two   different   data   collection   times.   In   addition,   younger   learners  were   also   compared   to   older   learners  in  each  instructional  setting  in  order  to  examine  the  effect  of  age.  At  two  data  collection  times,  non-­‐ CLIL  learners  were  found  to  use  the  L1  to  a  greater  extent  than  their  CLIL  counterparts.  However,  while  the   use  of  the  L1  decreased  in  the  non-­‐CLIL  groups  over  time,  in  the  CLIL  groups  it  remained  stable  across  time  in   the  younger  group  of  learners,  while  an  increase  was  observed  in  the  group  of  older  CLIL  learners.  The  nature   of  the  task,  which  could  have  been  not  so  motivating  for  students,  could  have  yielded  these  results  in  the  CLIL   group.   As   regards   the   effect   of   age,   at   Time  1,   older   non-­‐CLIL   learners  were   significantly   found   to  make   a   greater  use  of   the  L1.  At  Time  2  older   learners   in  both   instructional   settings  employed   the  L1   to  a   greater   extent  with  significant  differences.     Other   longitudinal  studies  comparing  CLIL  to  non-­‐CLIL   learners  during  task-­‐based   interaction  have   controlled  for  amount  of  exposure,  a  factor  that  could  explain  the  existence  of  some  contradictory  findings  in   the   literature.  Pladevall  Ballester  and  Vraciu  (2017)  examined  L1  use   in   the  oral  production  of  5th  and  6th   grade   primary   school   learners   over   a   period   of   two   academic   years.   Content   and   function   words,   codeswitching,   lexical   transfer   (i.e.,   borrowings,   foreignizings)   and   interactional   strategies   were   codified.   Interactional   strategies  were   further   broken   down   into  metacognitive   strategies,  metatalk   strategies,   task-­‐ related  interactional  strategies  and  private  speech.  The  examination  of  the  results  indicated  a  decrease  in  L1   use   as   L2   proficiency   increased   in   both   CLIL   and   non-­‐CLIL   learners.   Primary   school   learners   were   also   reported  to  make  use  of  their  L1  as  a  compensatory  strategy  during  L2  production  irrespective  of  the  type  of   instruction   (CLIL   vs.   non-­‐CLIL)   received.   In   terms   of   interactional   strategies,   metatalk   and   private   speech   were  the  most  common  functions  in  both  groups  at  the  beginning  of  the  study,  while,  at  the  very  end,  the  L1   preserved   its   regulatory   function   but   its   scaffolding   role   disappeared.   In   the   case   of   lexical   transfer,   borrowings   and   foreignizings   decreased   with   proficiency   in   both   groups   and   the   same   applied   to   codeswitching.     Apart   from   these   investigations   that   have   compared   CLIL   to   non-­‐CLIL   learners,   others   are   pseudolongitudinal   studies   of   different   age/proficiency   groups   of   young   CLIL   learners   (Azkarai   &   Imaz   Agirre,   2017),   though   limited   in   number   and   examining   the   interaction   of   age   with   other   variables   (i.e.   gender).  This  line  of  research  is  particularly  interesting  as  it  could  shed  more  light  on  the  development  of  the   use  of  PKL  during  task-­‐based  interaction  across  age.  Azkarai  and  Imaz  Agirre  (2017)  examined  gender  effects   on   the   amount  of   L1  use   in  Grade  3   and  4  primary-­‐school   learners  while  performing   a   spot-­‐the-­‐difference   task.  Boys  were  found  to  make  use  of  the  L1  to  a  greater  extent  than  girls,  and  this  difference  was  even  more   marked  in  Grade  4  learners.  Boys  seemed  to  employ  the  L1  to  avoid  communication  breakdowns,  while  girls   showed  a  more  restricted  use  of  the  L1.   The  overview  of  the  literature  on  L1  use  during  task-­‐based  interaction  has  shown  a  growing  body  of   research  in  this  area.  However,  it  has  uncovered  several  gaps  that  still  need  to  be  filled.  First,  studies  aimed  at   the   analysis   of   the   development   of   use   of   PKL   across   age   are   needed.   Second,   a   detailed   analysis   of   the   different  functions  and  most  common  manifestations  of  PKL  and  TL  use  is  advocated,  as  to  the  knowledge  of   the  author,   just  one   investigation   involving  younger   learners  has  been  conducted   in   this  respect  (Martínez-­‐ Adrián,  in  press).  Thus,  the  present  article  will  contribute  to  these  gaps  by  examining  the  use  of  PKL  (Basque   and  Spanish)  and  the  TL  (English)  in  appeals  for  assistance,  clarification  requests,  metacomments,  discourse   markers  and  private  speech  in  two  different  age/proficiency  groups  of  primary  school  learners  (Grades  5  and   6)   immersed   in   a   CLIL   context,   while   performing   a   communicative   task   in   pairs.   The   following   research   questions  will  be  addressed:     -­‐ RQ   1.   Are   there   any   differences   between   both   age/proficiency   groups   in   terms   of   the   amount   of   Basque/Spanish  use?   -­‐ RQ2.   Are   there   any   differences   between   both   age/proficiency   groups   in   terms   of   the   amount   of   English  use?   -­‐ RQ3.   Do   learners   in   each   group   show   a   preference   for   either   Basque/Spanish   or   English   in   the   categories  analyzed?   -­‐ RQ4.   Among   the   categories   examined,   which   ones   are   the   most   commonly   served   by   Basque/Spanish?     -­‐ RQ5.  Among  the  categories  examined,  which  ones  are  the  most  commonly  served  by  English?       MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 64   3.  Methodology   3.1.  Participants   The   study   was   carried   out   in   a   CLIL   context   in   a   mid-­‐sized   town   in   the   Basque-­‐Autonomous   Community  where  Basque  and  Spanish  co-­‐exist  as  official  languages.  90  Basque-­‐Spanish  bilingual  learners  of   L3  English  from  a  semi-­‐private  school  participated  in  the  study.  All  of  them  had  been  exposed  to  Spanish  and   Basque   since   birth   and/or   early   childhood   in   the   school-­‐context1.   They   were   enrolled   in   an   early   partial   immersion  programme  in  which  half  of  the  subjects  are  taught  in  Spanish  and  the  other  half  in  Basque,  except   for  the  English  as  a  foreign  language  class  and  some  content  subjects  that  are  in  English.     All  participants  started  learning  English  at  age  4  and  were  enrolled  in  a  CLIL  programme  at  age  8.  In   fifth-­‐  and  sixth-­‐years  of  schooling,  learners  are  exposed  to  English  in  the  classroom  context  for  5  to  7  weekly   hours  in  lessons  scheduled  as  English  as  a  school  subject  (3  hours  in  5th  year  and  4  hours  in  6th  year),  as  well   as  in  content  lessons  such  as  science,  arts  and  crafts  or  physical  education  (3  hours  in  5th  year  and  4  hours  in   6th   year).   At   the   time   of   the   data   gathering,   5th   year   learners   had   received   714   hours   of   exposure,   and   6th   graders  884  hours.  As  for  their  English  proficiency,  the  proficiency  level  test  administered  at  the  outset  of  the   study  indicated  that  5th  year  learners  were  in  A2-­‐,  and  6th  year  ones  in  the  A2  level  (CEFR;  Council  of  Europe,   2001).  Participant  characteristics  are  summarized  in  Table  1.   Table 1 Participant characteristics Learner groups CLIL 5 (n = 50) CLIL 6 (n = 40) Grade 5 6 Age (years) 10 11 Onset age 3.93 4.28 Exposure (academic years) 6.5 7.5 Hours of exposure to English 714 884 Hours of CLIL exposure 162 291 Proficiency level A2- A2 3.2.  Instruments  and  data  analysis   At   the   beginning   of   the   study,   learners   completed   both   a   questionnaire   on   their   personal   and   linguistic  background  (languages  known,  amount  of  time  learning  English  (at  school  and/or  extramurally)  as   well   as   a   proficiency   level   test,   consisting   of   the   reading,   listening   and   writing   sections   of   the   Cambridge   English   Flyers   (see   http://www.cambridgeenglish.org/exams/young-­‐learners-­‐english/flyers/testformat/).   Subsequently,  students  worked  in  pairs  to  narrate  a  story  in  English  with  visual  support  provided  by  a  series   of  wordless  pictures.  This   task   type  has  been  widely  used   for  similar  research  purposes  with  primary-­‐  and   secondary-­‐school   children   in   CLIL   and   non-­‐CLIL   settings   (i.e.,   Arratibel-­‐Irazusta   &  Martínez-­‐Adrián,   2018;   García   Mayo   &   Lázaro   Ibarrola,   2015;   Lázaro   Ibarrola   &   García   Mayo,   2012;   Martínez-­‐Adrián,   in   press;   Martínez-­‐Adrián  &  Gutiérrez-­‐Mangado,  2015a,  2015b).  These  vignettes  were  selected  from  the  Disney  movie   Aladdin   (1992)2.   As   for   the   procedure,   12   pictures   were   distributed   to   the   5th   and   6th   graders   (6   to   each   member  of  the  dyad).  At  the  beginning  of  the  task,  participants  could  not  see  each  other.  Each  dyad  member   had   to   describe   the   pictures   assigned,   which   had   been   randomly   presented.   Then,   working   together,   they   ordered   the   image   and   took   turns   telling   the   story   according   to   the   order   that   they  had   agreed  upon.   The   participants  were  asked  to  perform  the  task  naturally,  drawing  on  all  of  their  available  resources,  without  the   assistant’s  help  for  vocabulary  queries.  Even  if  this  type  of  task  has  been  found  to  be  achievable  and  beneficial   for   middle   school   children   (see   García   Mayo,   2018   for   a   review   of   empirical   findings   related   to   child   interaction  in  task-­‐based  EFL  contexts)  and  have  been  used  in  a  wide  range  of  studies  with  young  children  in   an   EFL   context   (i.e.,   García   Mayo   &   Lázaro   Ibarrola,   2015;   García   Mayo   &   Hidalgo   Gordo,   2017;   Lázaro   Ibarrola  &  Azpilicueta  Martínez,  2015;  Martínez-­‐Adrián,  in  press),  prior  to  the  administration  of  the  task,  the   researchers  ensure  that  the  task  was  appropriate  for  the  learners  tested  by  having  several  meetings  with  the                                                                                                                             1  Learners  had  one  of  three  profiles:  L1  Spanish/L2  Basque,  L1  Basque/L2  Spanish,  L1  Spanish/L1  Basque.   2  To  avoid  one  student  in  the  dyad  taking  on  a  lead  role,  pairings  were  made  based  on  each  member’s  similar  knowledge   about  the  Aladdin  story.       THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 65   school  teachers.  In  addition,  it  was  piloted  with  similarly  aged  children  so  as  to  detect  potential  problems  and   make  modifications  accordingly.     All   the   narrations   were   videotaped   and   later   on   transcribed   and   codified   in   CHILDES   format   (MacWhinney,  2000).  The  oral  data  was  codified  in  terms  of  Basque/Spanish  use  and  English  use  in  appeals   for   assistance,   clarification   requests,   metacomments   and   discourse   markers,   following   the   categorization   from  our  previous  studies  (see  Martínez-­‐Adrián,  in  press,  with  primary-­‐school  children;  Arratibel-­‐Irazusta  &   Martínez-­‐Adrián,  2018,  2019,  with  secondary-­‐school  learners).  Apart  from  that,  the  use  of  private  speech  has   been   incorporated   in   the   present   study   in   line   with   other   investigations   conducted   with   child   learners   (Pladevall  Ballester  &  Vraciu,  2017).  In  what  follows,  a  description  of  the  categories  along  with  illustrations   from  our  database  will  be  provided.     3.2.1.  Appeals  for  assistance   Appeals   for   assistance   (also  known  as   interactional   strategies,   Cenoz,   2003)   are   “direct   or   indirect   appeals  to  the  interlocutor  in  order  to  get  help  to  produce  a  specific  term  in  English  .   .   .  they  are  considered   intentional  and  present  a  marked  interrogative  intonation  pattern”  (Cenoz,  2003,  p.  5).  Example  1  illustrates   an  appeal  for  assistance  in  Spanish  and  Example  2  in  English:     1)   CH2:   ¿Cómo     se  dice                  señor?   How     do  you  say  man   How     do  you  say  a  man?     2)   CH2:   How  do  you  say  a  magical  thing?  [meaning  lamp]     3.2.2.  Clarification  requests   These   are   cases   in   which   the   learner   elicits   clarification   (Muñoz,   2007).   Example   3   provides   an   example  of  clarification  in  Basque  and  Example  4  in  English:   3)   CH2:   eh  #     ba  ###    hau     then            this     so,  this?     4)   CH1:   All?     3.2.3.  Metacomments   These  are  instances  in  which  the  learner  comments  on  the  communicative  situation  (Muñoz,  2007),   as  in  Example  5  (use  of  Spanish)  and  Example  6  (use  of  English):     5)   CH1:   no  sé  esta  misma  es  que  yo  no  me  lo  he  leído.   I  don’t  know  this  one  is  that  I  have  not  read  it   I  don’t  know,  just  this  one,  because  I  haven’t  read  it     6)   CH1:   this  is  the  last  [one].     3.2.4.  Discourse  markers   Also  called  phatics,  discourse  markers  are  “lexical  items  such  as  well,  so,  you  know,  etc.,  which  do  not   have  meaning  and  whose  basic   function   is   to   facilitate   the   flow  of   speech”   (Lázaro   Ibarrola  &  García  Mayo,   2012,  p.  140),  as  shown  in  Example  7  (use  of  Spanish)  and  Example  8  (use  of  English):     7)   CH1:   bueno,  princesa,  eso  es  una  princesa?   Well,  princess,  that  is  a  princess     8)   CH2:   and  this  picture,  is  a,  well  there  is  Aladdin  and  evil  and  evil  is  eh  eh  attacking  Aladdin.     MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 66   3.2.5.  Private  speech   Private  speech  refers  to  those  segments  of  the  interaction  primarily  used  for  self-­‐regulatory  purposes   (Pladevall   Ballester   &   Vraciu,   2017),   as   depicted   in   Example   9   (use   of   Spanish)   and   Example   10   (use   of   English):       9)   CH2:   ay  the  umm  the  ay  ay  eh  eeh  #  ay  no  sé  the  eeh  this  (pointing  at  the  character).   ay  the  umm  the  ay  ay  eh  eeh    ay  not  know  the  eeh  this   The  the  I  don’t  know  the  this     10)   CH2:   to  the  ###  I  don’t  know.     To   perform   statistical   analyses,   data   were   entered   into   SPSS   19   (IMB   Corp.   2010),   and   both   descriptive   and   inferential   analyses   were   computed.   In   the   case   of   descriptive   analyses,   both   means   and   standard   deviations   were   calculated   for   the   different   categories.   Kolmogorov-­‐Smirnov   tests   were   run   to   verify   the   normality   of   distribution   of   the   samples.   As   data   did   not   follow   a   normal   distribution,   Mann-­‐ Whitney  U  tests  were  used  for  inter-­‐group  comparisons  and  Friedman  Tests  together  with  Wilcoxon’s  Signed   Rank  Tests  were  conducted  for  intragroup  comparisons.  Statistical  significance  was  indicated  at  the  p  <  .01**   and  p  <  .05*  levels.  Marginally  significant  differences  were  indicated  at  the  p  <  .09#  level.     4.  Results   To   answer   the   first   two   research   questions,   intergroup   comparisons   regarding   the   use   of   Basque/Spanish  in  each  category  as  well  as  the  use  of  L3  English  are  provided.  Table  2  shows  the  results  for   the  total  use  of  PKL  (Spanish/Basque).     Table 2 Spanish/Basque use during interaction: Descriptive and inferential statistics Learner groups Instances of Spanish/Basque use Mann-Whitney U test Z Significance CLIL Year 5 M = 17.00 (SD = 16.02) −2.905 **0.004 CLIL Year 6 M = 28.63 (SD = 25.31)   As   can  be   observed   in  Table   2,   older  CLIL   learners  made   a   higher   use   of   PKL.   This   difference  was   highly  significant  from  a  statistical  point  of  view.  The  differences  were  particularly  evident  in  metacomments,   discourse   markers   and   private   speech,   as   depicted   in   Table   3.   The   L3   (English)   was   also   used   for   these   categories   in   both   groups   (see   Table   4).   The   analysis   of   the   results   indicated   that   both   learner   groups   employed  L3  English  with  the  same  frequency,  except   for   the  category  metacomments   in  which  a  statistical   tendency   was   found   in   favour   of   Year   5   learners.   In   order   to   give   an   answer   to   the   last   three   questions,   intragroup   comparisons   were   carried   out.   Tables   5-­‐6   display   the   findings   concerning   the   use   of   Basque/Spanish  compared  to  English  in  each  category.     Table 3 Instances of Basque and Spanish use by categories: Descriptive and inferential statistics Learner groups Mann-Whitney U test Categories CLIL Year 5 CLIL Year 6 Z Significance Appeals M = 4.10 (SD = 3.86) M =3.85 (SD = 2.80) −0.229 0.819 Clarification requests M = 1.20 (SD = 2.00) M = 0.93 (SD = 1.54) −0.404 0.686 Metacomments M = 7.70 (SD = 9.47) M = 15.48 (SD = 20.42) −2.752 **0.006 Discourse markers M = 3.02 (SD = 4.11) M = 6.28 (SD = 6.02) −3.319 **0.001 Private speech M = 0.98 (SD = 1.46) M = 2.10 (SD = 2.82) −2.131 *0.033       THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 67   Table 4 Instances of L3 English use by categories: Descriptive and inferential statistics Learner groups Mann-Whitney U test Categories CLIL Year 5 CLIL Year 6 Z Significance Appeals M =0.20 (SD = 0.40) M =0.10 (SD = 0.30) −1.293 0.196 Clarification requests M = 0.56 (SD = 0.95) M = 0.30 (SD = 0.56) −0.999 0.318 Metacomments M = 14.26 (SD = 10.07) M = 11.30 (SD = 11.46) −1.922 #0.055 Discourse markers M = 0.04 (SD = 0.198) M = 0.65 (SD = 3.48) −1.165 0.244 Private speech M = 0.96 (SD = 1.52) M = 0.73 (SD = 1.43) −1.216 0.224   Table 5 Comparison of instances of Basque/Spanish use to L3 English use by categories in Year 5: Descriptive and inferential statistics Language use Wilcoxon Rank test Categories L1/L2 (Spanish/Basque) L3 (English) Z Significance Appeals M = 4.10 (SD = 3.86) M = 0.20 (SD = 0.40) −5.381 **0.001 Clarification requests M = 1.20 (SD = 2.00) M = 0.56 (SD = 0.95) −1.710 #0.087 Metacomments M = 7.70 (SD = 9.47) M = 14.26 (SD = 10.07) −3.204 **0.001 Discourse markers M = 3.02 (SD = 4.11) M = 0.04 (SD = 0.198) −5.106 **0.001 Private speech M = 0.98 (SD = 1.46) M = 0.96 (SD = 1.52) −0.285 0.775   Table 6 Comparison of instances of Basque/Spanish use to L3 English use by categories in Year 6: Descriptive and inferential statistics Language use Wilcoxon Rank test Categories L1/L2 (Spanish/Basque) L3 (English) Z Significance Appeals M = 3.85 (SD = 2.80) M = 0.10 (SD = 0.30) −5.188 **0.001 Clarification requests M = 0.93 (SD = 1.54) M = 0.30 (SD = 0.56) −2.581 *0.010 Metacomments M = 15.48 (SD = 20.42) M = 11.30 (SD = 11.46) −0.805 0.421 Discourse markers M = 6.28 (SD = 6.02) M = 0.65 (SD = 3.48) −4.726 **0.001 Private speech M = 2.10 (SD = 2.82) M = 0.73 (SD = 1.43) −2.840 **0.005   In  both  groups,  the  tendency  was  to  resort  to  their  PKL  more  frequently  than  to  English  in  appeals  for   assistance,  clarification  requests  and  discourse  markers.  This  preference  reached  significance  in  both  groups.  In   the  case  of  private  speech,  no  differences  in  Year  5  students,  while  a  significantly  greater  use  of  Basque/Spanish   was  observed  in  Year  6  learners.  As  regards  metacomments,  Year  5  students  preferred  to  use  English  in  a  highly   significant  manner,  whereas  the  inexistence  of  significant  differences  was  obtained  in  Year  6  students,  a  finding   that  seems  to  indicate  a  more  balanced  use  of  both  languages  in  this  category.  Figure  1  depicts  the  descriptive   comparison  of  the  use  of  Spanish/Basque  in  the  different  categories  among  Year  5  students.     Figure 1. Categories served by Basque/Spanish in Year 5 0 1 2 3 4 5 6 7 8 9 Metacomments Appeals Discourse markers Clarification requests Private speech MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 68   As   illustrated   by   Figure   1,  metacomments,   followed  by   appeals   and  discourse  markers,  were  most   commonly   served   by   the   use   of   Basque/Spanish.   Clarification   requests   and   private   speech   were   the   categories  with  the  least  use  of  these  languages.  In  order  to  see  whether  these  differences  were  statistically   significant,   a   Friedman’s   Test   was   conducted.   Statistically   significant   differences   emerged   (Chi-­‐ Square=324.708;  p-­‐value=0.001),  and  therefore  post-­‐hoc  analyses  were  conducted.  A  Wilcoxon’s  Signed  Rank   test   showed   that   metacomments   significantly   differed   from   the   other   categories.   In   addition,   statistically   significant  differences  were  also  observed  among  appeals,  discourse  markers  and  clarification  requests,  while   no  differences  emerged  between  clarification  requests  and  private  speech.  Table  7  presents  the  summary  of   these  results.  The  same  descriptive  analysis  was  carried  out  for  year  6  (Figure  2).     Table 7 Use of Basque/Spanish: Wilcoxon’s Signed Rank Test for Year 5 Categories Z Significance Clarification requests-Appeals −4.842 **0.001 Metacomments-Appeals −2.432 *0.015 Discourse markers-Appeals −2.124 *0.034 Private speech-Appeals −4.753 **0.001 Metacomments-Clarification requests −5.032 **0.001 Discourse markers-Clarification requests −3.605 **0.001 Private speech-Clarification requests −0.621 0.534 Discourse markers-metacomments −3.158 **0.002 Private speech-Metacomments −4.890 **0.001 Private speech-Discourse markers −4.101 **0.001 Figure 2. Categories served by Basque/Spanish in Year 6     As  in  Year  5,  metacomments  were  the  most  common  manifestation  of  Basque/Spanish  use,  followed   by   discourse  markers   and   appeals   for   assistance.   The   use   of   these   languages  was   less   common   in   private   speech,   and   even   less   in   clarification   requests.   The   Friedman   test   indicated   the   existence   of   significant   differences   across   these   categories   (Chi-­‐Square=  292.418;  p-­‐value=0.001).   Consequently,   post-­‐hoc   analyses   were  conducted.  The  Wilcoxon’s  Signed  Rank  test  (Table  8)  confirmed  the  existence  of  significant  differences   between  metacomments  and  the  rest  of  the  categories.  Similarly,  the  differences  between  appeals,  discourse   markers,  clarification  requests  and  private  speech  were  significant  or  nearly  significant.  Figure  3  shows  the   descriptive  analysis  for  the  use  of  English  in  the  different  categories  explored.           0 2 4 6 8 10 12 14 16 18 Metacomments Appeals Discourse markers Clarification requests Private speech THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 69   Table 8 Use of Basque/Spanish: Wilcoxon’s Signed Rank Test for Year 6 Categories Z Significance Clarification requests-Appeals −4.443 **0.001 Metacomments-Appeals −5.144 **0.001 Discourse markers-Appeals −1.853 #0.064 Private speech-Appeals −2.876 **0.004 Metacomments-Clarification requests −5.376 **0.001 Discourse markers-Clarification requests −4.784 **0.001 Private speech-Clarification requests −2.465 *0.014 Discourse markers-metacomments −3.033 **0.002 Private speech-Metacomments −5.306 **0.001 Private speech-Discourse markers −3.904 **0.001     Figure 3. Categories served by L3 English in Year 5 The   use   of   English   was   prevalent   in   metacomments,   while   the   use   of   this   language   in   the   other   categories   was   scarce.   Particularly,   the   use   of   English   discourse   markers   was   nearly   non-­‐existent.   The   Friedman  test  revealed  the  existence  of  significant  differences  across  these  categories  (Chi-­‐Square  =  324.708;   p  =  0.001).  A  Wilcoxon’s  Signed  Rank  test  indicated  that  metacomments  significantly  differed  from  the  rest  of   the   categories.   Statistically   significant   differences   emerged   among   the   other   categories,   except   for   the   contrast  between  private  speech  and  clarification  requests  (see  Table  9).       Table 9 Use of English: Wilcoxon’s Signed Rank Test for Year 5 Categories Z Significance Clarification requests-Appeals −2.640 0.008* Metacomments-Appeals −6.156 0.001** Discourse markers-Appeals −2.530 0.011* Private speech-Appeals −3.571 0.001** Metacomments-Clarification requests −6.155 0.001** Discourse markers-Clarification requests −3.342 0.001** Private speech-Clarification requests −1.335 0.182 Discourse markers-metacomments −6.156 0.001** Private speech-Metacomments −6.141 0.001** Private speech-Discourse markers −4.073 0.001**   0 2 4 6 8 10 12 14 16 Metacomments Appeals Discourse markers Clarification requests Private speech MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 70   Figure   4   shows   the   results   for   the   use   of   English   by   Year   6   learners.   Year   6   students   also   made   substantial   use   of   English   in   metacomments   compared   to   the   other   categories,   in   which   the   use   of   this   language  was   less   frequent.   In   particular,   appeals  were   the   least   frequently   used   category.   The   interaction   among   these   categories  was   significant   (Chi-­‐Square   =   292.418;  p  =   0.001).   Post-­‐hoc   analyses   showed   that   metacomments  significantly  differed  from  the  rest  of  the  categories.  Statistically  significant  differences  were   obtained  between  the  rest  of  the  categories,  except  for  the  contrast  between  discourse  markers  and  appeals   for  assistance,  as  well  as  discourse  markers  and  clarification  requests  (Table  10).         Figure 4. Categories served by L3 English in Year 6 Table 10 Use of English: Wilcoxon’s Signed Rank test for Year 6 Categories Z Significance Clarification requests-Appeals −1.890 0.059# Metacomments-Appeals −5.092 0.001** Discourse markers-Appeals −0.647 0.518 Private speech-Appeals −2.724 0.006* Metacomments-Clarification requests −5.219 0.001** Discourse markers-Clarification requests −1.016 0.310 Private speech-Clarification requests −2.041 0.041* Discourse markers-metacomments −5.089 0.001** Private speech-Metacomments −5.164 0.001** Private speech-Discourse markers −1.771 0.077#   5.  Discussion     In  this  section,  the  five  research  questions  of  the  study  will  be  answered.  As  regards  the  first  research   question   (Are   there   any   differences   between   both   age/proficiency   groups   in   terms   of   the   amount   of   Basque/Spanish  use?),  the  intergroup  analysis  showed  a  greater  use  of  PKL  in  Year  6  learners,  a  result  in  line   with   findings   from  other  studies  carried  out   in  a  CLIL  context   (Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2018;   García  Mayo  &  Hidalgo  Gordo,  2017;  García  Mayo  &  Imaz-­‐Agirre,  2017;  García  Mayo  &  Lázaro  Ibarrola,  2015).   This  greater  use  of  Basque/Spanish  is  especially  reflected  in  metacomments,  discourse  markers  and  private   speech.   Due   to   older   learners’   cognitive   maturity   and   on   economy   grounds,   they   seem   to   make   use   of   strategies   that   are   less   cooperative   and   more   external   to   the   task.   In   fact,   studies   conducted   with   CLIL   learners   (both   primary-­‐school   learners   and   adolescents)   have   shown   the   use   of   PKL   to   be   prevalent   in   metacomments  and  discourse  markers,  and  this  use  did  not  decrease  as  age  increased  (Arratibel-­‐Irazusta  &   Martínez-­‐Adrián,   2018;   Gutiérrez-­‐Mangado,   2015;   Lázaro   Ibarrola,   2016)3.   As   regards   more   cooperative                                                                                                                             3   Also   note   that   private   speech,   an   underresearched   category   in   CLIL   studies,   was   also   maintained   over   the   period   examined  in  the  study  by  Pladevall  and  Vraciu  (2017).   0 2 4 6 8 10 12 Metacomments Appeals Discourse markers Clarification requests Private speech THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 71   strategies  (appeals  for  assistance  and  clarification  requests),  the  intergroup  analysis  did  not  yield  statistically   significant   differences.   But   despite   the   inexistence   of   statistically   significant   differences,   the   descriptive   means   point   to   a   greater   use   by   Year   5   learners.   In   previous   investigations   with   young   CLIL   learners   (Gutierrez-­‐Mangado,  2015),  similar  tendencies  were  observed  for  these  two  categories.  These  strategies  are   more   internal   to   the  task,  and  we  could  claim  that  use  decreases  as  age  and  proficiency   increase.  A  greater   gap   in  proficiency  could   likely  result   in  statistically  significant  differences   in  these  categories.  Nevertheless,   the  results  from  the  present  study  contrast  with  Lázaro  Ibarrola  and  García  Mayo  (2012).  In  their  longitudinal   study   with   secondary-­‐school   learners   in   which   a   wider   gap   in   proficiency   existed,   L1   use   in   appeals   for   assistance  and  discourse  markers  decreased  as  proficiency  increased.   Even   if   a   higher   use   of   Basque/Spanish   was   observed   in   the   older   group   of   learners,   as   in   other   investigations  with   young  CLIL   learners   (García  Mayo  &  Hidalgo  Gordo,   2017;  García  Mayo  &   Imaz  Agirre,   2017;   García  Mayo   &   Lázaro   Ibarrola,   2015),   the   underlying   reasons   cited   in   these   investigations   for   this   higher  use  are  not  applicable  to  our  sample.  Unlike  the  older  learners  in  these  investigations,  for  whom  the   task  performed  may  not  have  been  very  appealing  or   in  other   cases   (e.g.  when   task   repetition  was  carried   out)  not  so  motivating  the  second  time  they  performed  the  task,  the  older  learners  in  the  present  study  were   highly  engaged  while  carrying  out  the  task.  Their  attitude  towards  performing  a  different  task  from  the  one   used   in  the  aforementioned  studies  suggested  that  the  task  was   indeed  attractive  to  them.  Thus,  we  cannot   really  argue  that  low  motivation  explains  the  higher  use  of  PKL  on  the  part  of  older  learners.  The  higher  use   of  PKL  by  older  learners  seems  to  be  a  trend  and  deserves  further  investigation  in  future  studies.   With  respect  to  the  second  research  question—Are  there  any  differences  between  both  age/proficiency   groups  in  terms  of  the  amount  of  English  use?—both  groups  were  able  to  perform  the  categories  examined  in   English,  a  result   in   line  with  the  bilingual  nature  of   the  educational  programme  in  which  the   learners  were   immersed.  The  use  of  both  Basque/Spanish  and  English  was  evident  in  the  different  categories.  These  results   contrast   with   the   findings   obtained   in   previous   investigations   with   younger   learners   (Martínez-­‐Adrián,   in   press)  in  which  similar  categories  were  examined.  In  particular,  metacomments  were  always  produced  in  L1   Spanish  in  Martínez-­‐Adrián  (in  press),  while  both  Basque/Spanish  and  English  were  employed  in  the  present   study.  The  differences  existing  in  the  CLIL  programmes  in  which  learners  were  enrolled  in  these  studies  could   account   for   these   results.   In   the   present   study,   learners   received   instruction   in   content   subjects   such   as   science,  arts  and  crafts  and  physical  education  exclusively  in  English.  In  Martínez-­‐Adrián  (in  press),  Years  4   and  6  learners  were  receiving  half  of  their  lessons  in  English  and  half  in  Spanish4.     In   terms   of   quantity,   the   intergroup   analysis   revealed   that   English   was   employed   in   similar   proportions  in  Years  5  and  6  as  in  previous  investigations  in  which  a  small  gap  in  age  and  proficiency  was  not   so  big  as  to  result  in  statistically  significant  differences  (see  Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2019,  with   secondary-­‐school   learners   and   oral   production;   Martínez-­‐Adrián   et   al.,   2019,   with   self-­‐reported   opinions   gathered  from  the  same  sample  tested  in  the  present  study),  except  for  the  metacomments  category  in  which   a  statistical  tendency  was  found  in  favour  of  Year  5  learners.  This  result  is  related  to  the  answer  to  the  next   research  question,  which  centered  on  language  preference  in  each  category.  In  the  case  of  this  category,  Year   5  preferred  the  use  of  English  over  Basque/Spanish.  As  neither  interviews  with  the  teachers  of  this  group  of   learners  nor  the  observation  of  the  lessons  were  carried  out,  the  advocacy  for  a  more  English-­‐only  policy  in   the  Year  5  group,  which  could  explain  this  result,  remains  tentative.     As   for   the   third   research   question—Do   learners   in   each   group   show   a   preference   for   either   Basque/Spanish  or  English  in  the  categories  analyzed?—  in  Year  5  a  significantly  higher  use  of  Basque/Spanish   was   observed   in   nearly   all   the   categories   except   for   metacomments,   in   which   statistically   significant   differences   emerged   in   favour   of   English  use.  A   similar   pattern  was   attested   in  Year  6,   even   though   in   the   category   metacomments,   learners   used   Basque/Spanish   and   English   in   similar   proportions   given   the   inexistence   of   statistically   significant   differences   in   this   respect.   Nevertheless,   even   if   the   analysis   did   not   yield  statistical  significance,  the  descriptive  means  point  to  a  tendency  to  increase  the  use  of  Basque/Spanish   over  English  in  this  category.     In   general,   the   trend   is   for   learners   to   use  Basque/Spanish   to   a   greater   extent   than  English   in   the   categories  examined  when   they  are   interacting,  as   it   is   the   language  shared  by  both  members  of   the  dyads   (see  Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2018  and  Lázaro  Ibarrola,  2016  for  similar  results  in  the  category                                                                                                                             4  Also  note  that  the  present  study  and  Martínez-­‐Adrián  (in  press)  differ  in  design,  as  Martínez-­‐Adrián  (in  press)  compared   CLIL  to  non-­‐CLIL  learners  in  Years  4  and  6,  no  inferential  analysis  was  carried  out  when  contrasting  the  use  of  English  and   Spanish,  and  the  task  performed,  although  similar  in  procedure,  differed  in  terms  of  the  visual  stimuli  employed.   MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 72   discourse  markers).  However,  the  category  metacomments  deserves  further  examination  as  a  preference  for   English   existed   among   Year-­‐5   students   and   a   more   balanced   use   of   Basque/Spanish   and   English   was   observed   in   Year-­‐6   learners.   What   these   results   reveal   is   that   English   is   special   for   the   performance   of   metacomments.  This  category   is  specifically   linked  to   the  task  procedure.  Learners  use  English  to  a  greater   extent   or   as   much   as   they   use   Basque/Spanish   when   they   have   to,   among   other   things,   move   the   task   forward,when  they  have  to  classifiy  the  pictures  or  when  they  have  to  order  them.  In  this  respect,  the  more   functional   use   of   English   is   observed.   We   should   not   overlook   the   fact   that   English   is   a   language   of   communication  rather  than  an  object  of  study  in  CLIL  programmes  (Martínez-­‐Adrián  &  Gutiérrez-­‐Mangado,   2015a),   which   could   explain   the   use   of   English   for   metacognitive   purposes.   This   result   also   aligns   with   Martínez-­‐Adrián   et   al.’s   study   (2019)   in   which   the   preference   for   the   use   of   English   in   paraphrases   was   evident   in   the   same   learners’   self-­‐reported   opinions.   In   that   study,   this  was   explained   in   light   of   the   input   provided  to  CLIL  learners  and  the  fact  that  learners  use  the  foreign  language  as  a  means  of  communication,   which  might  lead  them  to  manipulate  the  TL  to  a  higher  rate  compared  to  mainstream  learners.  Even  if  the   use  of  English  in  paraphrases  or  descriptions  is  slightly  different  from  its  use  in  metacomments,  what  seems   to  be  clear  is  that  the  use  of  English  as  a  language  of  communication  in  CLIL  lessons  may  be  the  underlying   reason  for  both  episodes.     If  we  tackle  the  differences  between  Year  5  and  Year  6  learners  in  terms  of  metacomments,  even  if  we   observed  a  similar  use  of  Basque/Spanish  and  English  in  Year  6  learners,  the  tendency  seems  to  augment  the   use   of   their   PKL.   It   seems   as   if   these   Year   6   learners   were   more   practical   and   were   guided   by   economy   principles  to  solve  the  task  in  a  faster  way  (Lin,  2015).  This  is  not  surprising  as  the  same  learners  in  Year  6   were   found   to   show   a   preference   for   more   communicative   options,   such   as   borrowings,   to   avoid   communication  breakdowns  in  the  self-­‐report  questionnaire  administered  to  them  in  Martínez-­‐Adrián  et  al.   (2019).   In   fact,   other   studies   with   primary-­‐school   learners   have   reported   similar   tendencies   (Gutiérrez-­‐ Mangado,   2015)   and   the   same   applies   to   secondary-­‐school   learners   (Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,   2018).  On  the  other  hand,  Year  5  learners  seem  to  be  more  conservative  by  using  the  language  of  instruction   to  a  greater  extent  while  making  comments  related  to  the  task.  However,  this  argument  remains  tentative  due   to  the  lack  of  questionnaires  or  interviews  carried  out  with  these  learners  and  their  teachers  about  the  use  of   Basque/Spanish   and   English   in   their   classes.   The   use   of   more   qualitative   data   on   the   language   policy   implemented  in  each  class  would  undoubtedly  illuminate  the  discussion  of  the  results.     All  in  all,  what  these  results  seem  to  evince  is  that,  even  if  English  is  widely  used  in  metacomments,   Basque/Spanish   use   overrides   the   use   of   English   in   the   rest   of   the   categories.   This   aligns   with   previous   research   studies   in   which   previously   known   language-­‐based   strategies   coexist   with   the   use   of   TL-­‐based   strategies   (Arratibel-­‐Irazusta   &   Martínez-­‐Adrián,   2019;   Martínez-­‐Adrián,   in   press;   Martínez-­‐Adrián   et   al.,   2019;   Pladevall   Ballester   &   Vraciu,   2017).   This   suggests   that   these   learners   are   functioning   in   a   bilingual   mode,  rather  than  in  a  monolingual  mode  (Martínez-­‐Adrián,  in  press).   In  response  to  the  fourth  research  question—Among  the  categories  examined,  which  ones  are  the  most   commonly  served  by  Basque/Spanish?—metacomments  are  the  most  common  manifestation  of  the  use  of  PKL,   followed  by  appeals   for   assistance   and  discourse  markers   in  Year  5.  A   similar   result   is   obtained   in  Year  6.   These  are  the  functions  characterized  by  a  greater  use  of  the  L1  in  previous  investigations  with  both  children   (Azkarai  &  García  Mayo,   2017;   García  Mayo  &  Hidalgo  Gordo,   2017;  Martínez-­‐Adrián,   in   press)   and   adults   (Alegría   de   la   Colina   &   García   Mayo,   2009;   Arratibel-­‐Irazusta   &   Martínez-­‐Adrián,   2018;   Azkarai   &   García   Mayo,  2015;  Storch  &  Aldosari,  2010).  The  use  of  Basque/Spanish  in  metacomments  allowed  the  learners  to   progress   in   their   completion   of   the   task   and   comply   with   task   requirements.   Similarly,   the   use   of   these   languages  in  appeals  for  assistance  regarding  deliberations  over  vocabulary  and  in  discourse  markers  to  keep   the  flow  of  speech  prevented  them  from  communication  breakdowns.  In  fact,  the  use  of  appeals  for  assistance   was  also  one  of  the  strategies  that  ranked  higher  in  frequency  in  the  self-­‐report  questionnaire  administered   to  the  same  learners  in  Martínez-­‐Adrián  et  al.  (2019).     The   least   used   functions   were   clarification   requests   and   private   speech.   The   lower   use   of   L1s   in   clarification   requests   has   also   been   attested   in   research   with   younger   learners   (Azkarai   &   García   Mayo,   2017).  Private  speech   is   similarly  uncommon   in  other   investigations  with  children   (García  Mayo  &  Hidalgo   Gordo,  2017)  as  well  as  in  studies  with  adults  conducted  in  an  EFL  setting  (Alegría  de  la  Colina  &  García  Mayo,   2009).     Finally,  in  response  to  the  last  research  question—Among  the  categories  examined,  which  ones  are  the   most   commonly   served   by   English?—metacomments   were   the   most   productive   category   in   both   years.   Students   employed   the   language   of   instruction,   which   together   with   Spanish,   was   also   used   for   task   THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 73   management.   This   finding   could   be   related   to   the   use   of   the   TL   in   CLIL   programmes   with   a   meaningful   purpose.  However,   the  use  of  English   is  uncommon   in  discourse  markers  and  appeals   for  assistance.  Other   studies   have   also   reported   the   inexistence   of   English   discourse   markers   in   CLIL   learners’   discourse   (Arratibel-­‐Irazusta  &  Martínez-­‐Adrián,  2018;  Lázaro  Ibarrola,  2016).  Likewise,  when  learners  noticed  a  gap  in   knowledge   while   interacting,   they   preferred   to   use   Basque/Spanish   rather   than   English,   so   the   communicative   flow  of   speech  would  not  be   interrupted  and  doubts   concerning  vocabulary   items  could  be   solved  much  more  effectively  and  efficiently.  In  this  fashion,  the  message  can  be  conveyed.       6.  Conclusion   The  goal  of  this  study  has  been  to  examine  the  use  of  PKL  (Basque  and  Spanish)  and  the  TL  (English)   in  appeals  for  assistance,  clarification  requests,  metacomments,  discourse  markers  and  private  speech  in  two   different   age/proficiency   groups   of   primary   school   learners   (grades   5   and   6)   immersed   in   a   CLIL   context,   while   performing   a   communicative   task   in   pairs.   In   terms   of   amount,   there  were   differences   between   age   groups,  with  greater  use  of  PKL  among  the  older  learners,  especially  in  less  cooperative  strategies  and  those   more  external   to   the   task  (metacomments,  discourse  markers  and  private  speech).  As   for   the  use  of   the  TL   (English),   the   analysis   indicated   that   both   age   groups   behaved   in   a   similar   way,   except   with   regard   to   metacomments,  which  younger  learners  used  slightly  more  frequently.  The  intragroup  analysis  revealed  that   both  age  groups  resorted  to  Basque/Spanish  more  frequently  than  to  English,  except   for  metacomments,   in   which   the   younger   group   preferred   to   use   English,   while   older   learners  made   use   of   Basque/Spanish   and   English   in   similar   proportions.   The   fact   that   English   has   a   more   functional   use   in   CLIL   settings,   as   the   language   of   communication   in   these   meaning-­‐oriented   settings,   could   account   for   the   use   of   English   for   metacognitive  purposes  by  these  learners  during  dyadic  interaction.  In  terms  of  types,  a  similar  pattern  was   observed  as  regards  the  most  common  manifestation  of  Basque/Spanish  use  and  English  use.  Metacomments,   followed  by  discourse  markers  and  appeals  for  assistance  were  the  categories  most  commonly  served  by  PKL.   In  the  case  of  TL  use,  metacomments  were  widely  employed.  What  this  analysis  indicates  is  that  learners  use   their   language  repertoire  for  task-­‐management  purposes,  a   finding  which  could  be  ascribed  to  the  bilingual   nature  of  the  CLIL  programme  in  which  they  were  immersed.     In  the  light  of  the  results,  two  main  pedagogical  implications  may  be  drawn.  The  examination  of  the   findings   has   shown   the   beneficial   effect   of   CLIL   on   the   learners’   use   of   their   language   repertoire   for   task-­‐ management   purposes.   However,   the   less   balanced   use   of   their   PKL   and   the   TL   attested   in   appeals   for   assistance   indicates   the   need   for   more   TL-­‐based   strategies   (i.e.,   use   of   synonyms,   descriptions,   reformulations)  among  students  or  the  enhancement  of  paraphrasing  during  teachers’  discourse,  which  could   provide  students  with  rich  and  repeated  modeling  (Dalton-­‐Puffer,  2016,  as  cited  in  Pavón  &  Ramos,  2019).  It   is  not  a  matter  of  banning  the  use  of  their  PKL,  but  of  making  students  aware  of  other  strategies  that  could   help   them   during   interaction   when   they   might   feel   stuck.   Similarly,   more   systematic   activities   aimed   at   practicing   TL   lexical   discourse   markers   could   promote   the   development   of   more   natural   speech.   Taken   together,  these  two  measures  could  boost  learners’  flow  of  speech  in  the  TL.  By  integrating  the  development   of  strategy  use  in  the  curriculum,  we  would  be  contributing  to  a  more  balanced  use  of  learners’  PKL  and  the   TL,  as  advocated  by  recent  research  (see  Martínez-­‐Adrián,  Gutiérrez-­‐Mangado,  &  Gallardo-­‐del-­‐Puerto,  2019).   In   other  words,   gradually   bridging   PKL   and   the   TL   in   the   everyday/academic   register   could   lead   to  more   optimal   communication   and   maximize   the   effectiveness   of   CLIL   in   terms   of   both   content   and   language   learning  (Lo  &  Lin,  2019).   For   future  research,  as   indicated   in  Martínez-­‐Adrián  et  al.   (2019),   statistical  correlations  should  be   conducted   between   learners’   self-­‐reported   opinions   and   their   performance   during   oral   interaction.   In   general,  a  call   for  more  research  along  these   lines  has  been  made   in   the   literature  (Gao,  2007).  This   line  of   research  is  especially  inexistent  in  studies  on  young  learners.  Similarly,  longitudinal  investigations  will  shed   more  light  on  how  the  use  of  PKL  and  the  TL  evolve  over  time.  Likewise,  more  qualitative  data  (observations,   interviews   with   both   learners   and   teachers   in   different   subjects)   would   elucidate   some   of   the   arguments   provided  in  the  discussion  of  the  results.  The  impact  of  different  types  of  pairings  and  task-­‐modality  effects   are  also  worth  investigating  so  as  to  explore  the  best  learning  conditions  for  young  learners.  Finally,  a  follow-­‐ up   study   comparing   the   performance   of   CLIL   to   non-­‐CLIL   leaners   will   allow   us   to   reach   more   robust   conclusions  concerning  the  effect  of  more  intense  and  meaningful  input  during  CLIL  lessons.         MARTÍNEZ-­‐ADRIÁN   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 74   Acknowledgements   The   author   would   like   to   acknowledge   the   grants   awarded   by   the   Spanish   Ministry   of   Economy   and   Competitiveness   (FFI2012-­‐32212)   and   (FFI2016-­‐74950-­‐P)(AEI/FEDER/UE),   the   University   of   the   Basque   Country  (UPV/EHU)  (UFI  11/06)  and  the  Basque  Government  (IT904-­‐16).         References   Agustín  Llach  ,  María  del  Pilar  (2014).  L1  use  in  children  EFL  learners  in  traditional  versus  CLIL  instruction.   Paper  presented  at  the  International  Conference  on  Child  Foreign  Language  Acquisition.  Universidad   del  País  Vasco,  16-­‐17  October.   Alegría  de  la  Colina,  Ana,  &  García  Mayo,  María  del  Pilar  (2009).  Oral  interaction  in  task-­‐based  EFL  learning:   The  use  of   the  L1  as  a  cognitive   tool.   International  Review  of  Applied  Linguistics   (IRAL),  47(3),  325-­‐ 345.   Arratibel-­‐Irazusta,  Izaskun,  &  Martínez-­‐Adrián,  María  (2018).  The  use  of  previously  known  languages  in  the   oral   production   of   L3   English   learners:   A   pseudolongitudinal   study.   European   Journal   of   Applied   Linguistics,  6(2), 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and   learning  across  L2  instructional  contexts  (pp.  53-­‐78).  Amterdam,  The  Netherlands:  Rodopi.                           THE  USE  OF  PREVIOUSLY  KNOWN  LANGUAGES   E-­‐JournALL  7(1)  (2020),  pp.  59-­‐77 77   María Martínez-Adrián, The University of the Basque Country maria.martineza@ehu.eus EN María Martínez-Adrián is an Associate Professor at the UPV/EHU and a member of the Laslab group (www.laslab.org), highlighted by the Basque Government for excellence in research. She has co-edited the volume Contemporary Approaches to Second Language Acquisition published by John Benjamins (Spanish Association of Applied Linguistics award 2014), a special issue on L1 use in CLIL/CBI settings published by the International Journal of Bilingual Education and Bilingualism, and the monograph Crosslinguistic influence: From empirical evidence to classroom practice published by Springer. Her work has appeared in books published by Multilingual Matters and Springer, as well as in journals such as RESLA, IJES, ITL, JICB, LTR, EUJAL, IRAL and INJAL, among others. ES María Martínez-Adrián ejerce como Profesora Titular en la UPV/EHU y es miembro del Grupo Consolidado de Excelencia Laslab (www.laslab.org),. Ha coeditado el volumen Contemporary Approaches to Second Language Acquisition [Acercamientos contemporáneos a la Adquisición de Segundas Lenguas] publicado por John Benjamins (Premio de la Asociación Española de Lingüística Aplicada, 2014), una edición especial sobre el uso de la L1 en entornos AICLE/IBC publicada por el International Journal of Bilingual Education and Bilingualism [Revista internacional de educación bilingüe y bilingüismo], y la monografía Crosslinguistic influence: From empirical evidence to classroom practice [Influencia interlingüística: De la evidencia empírica a la práctica en el aula] publicada por Springer. Asimismo, cuenta con capítulos de libro publicados por Multiligual Matters y Springer, al igual que artículos en revistas académicas como RESLA, IJES, ITL, JICB, LTR, EUJAL, IRAL y INJAL, entre otras. IT María Martínez-Adrián è professoressa associata all'UPV/EHU e membro del gruppo Laslab (www.laslab.org), lodato dal governo basco per eccellenza nella ricerca. Ha co-curato il volume Contemporary Approaches to Second Language Acquisition pubblicato da John Benjamins (premio dell'Associazione Spagnola di Linguistica applicata 2014), un fascicolo speciale sull'uso di L1 in contesti CLIL/CBI pubblicato dall'International Journal of Bilingual Education and Bilingualism, e la monografia Crosslinguistic influence: From empirical evidence to classroom practice pubblicata da Springer. Il suo lavoro è apparso in libri pubblicati da Multilingual Matters e Springer, oltre che, tra l’altro, su riviste come RESLA, IJES, ITL, JICB, LTR, EUJAL, IRAL e INJAL.