Correction of Abeditehrani, H., Dijk, C., Sahragard Toghchi, M., &
					Arntz, A. (2020). Integrating Cognitive Behavioral Group Therapy and Psychodrama
					for Social Anxiety Disorder: An Intervention Description and an Uncontrolled
					Pilot Trial


Correction

Correction of Abeditehrani, H., Dijk, C., Sahragard 
Toghchi, M., & Arntz, A. (2020). Integrating Cognitive 
Behavioral Group Therapy and Psychodrama for Social 
Anxiety Disorder: An Intervention Description and an 
Uncontrolled Pilot Trial

Clinical Psychology in Europe, 2021, Vol. 3(4), Article e7727, https://doi.org/10.32872/cpe.7727

Published (VoR): 2021-12-23

Correction note to:

Abeditehrani, H., Dijk, C., Sahragard Toghchi, M., & Arntz, A. 
(2021). Integrating cognitive behavioral group therapy and 
psychodrama for social anxiety disorder: An intervention 
description and an uncontrolled pilot trial. Clinical Psychology in 
Europe, 2(1), Article e2693. https://doi.org/10.32872/cpe.v2i1.2693

In the originally published version of the above mentioned article, there was a typo­
graphical error in Table 4. In the second row ("LSAS"), an incorrect value in the "p" 
column was provided (.19). Instead, the correct data for "LSAS" under the "p" column 
is: .019. This change has no effect on the conclusions drawn in the article as the authors 
had already explained correctly that there was a significant decrease (p = .019) in social 
anxiety symptoms assessed with the LSAS. The corrected table can be found below (see 
Table 4). The authors apologize for any inconveniences caused.

Table 4

Pretest and Posttest Comparison for the CBPT Intervention

Scale

Pre Post

t (4)

M difference [CI 99%]
Cohen’s 

d
Hedges’ 

gM SD M SD LL UL p
BFNE 35.60 7.02 28.40 4.10 2.86 -4.39 18.79 .046 1.03 0.82

LSAS 99.40 16.99 58.40 24.81 3.82 -8.44 90.44 .019 2.41 1.93

SADS 14.40 5.64 11.80 7.73 1.31 -6.56 11.76 .261 0.46 0.37

PAS 133.20 13.88 131.60 17.21 0.20 -34.67 37.87 .849 -0.12 -0.09

OPQ 56.20 23.18 35.80 16.63 3.22 -8.74 49.54 .032 0.88 0.70

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Scale

Pre Post

t (4)

M difference [CI 99%]
Cohen’s 

d
Hedges’ 

gM SD M SD LL UL p
OCQ 64.80 23.47 47.00 26.67 5.95 4.03 31.57 .004 0.76 0.61

BDI 19.60 5.86 12.60 8.20 2.03 -8.82 22.82 .111 1.19 0.96

QOLI 29.40 21.31 36.00 25.17 -0.88 -41.13 27.93 .429 0.31 0.25

Note. Observed Means (M) and Standard Deviations (SD) for the Pre and Post assessment points; results of 
t-test analyses (t, p-value) and effect sizes Cohen’s d and Hedges’ g. BFNE = Brief Fear of Negative Evaluation; 
LSAS = Liebowitz Social Anxiety Scale; SADS = Social Avoidance and Distress Scale; PAS = Personal Attitude 
Scale-II; OPQ = Social cost and probability by the Outcome Probability Questionnaire; OCQ = Outcome Cost 
Questionnaire; BDI = Beck Depression Inventory; QOLI = Quality of Life Inventory. Cohen’s d was estimated as 
d = (mean pre-post change)/(pretest SD). Hedges’ g was calculated as follows: g = J*d, with d = Cohen’s d; J = (1 
– 3/(4*df-1)); df = N-1. The sign of the effect size was chosen so that a positive effect size indicates improvement 
and negative effect size represents worsening.

Clinical Psychology in Europe (CPE) 
is the official journal of the 
European Association of Clinical 
Psychology and Psychological 
Treatment (EACLIPT).

PsychOpen GOLD is a publishing 
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Correction of Abeditehrani, H., Dijk, C., Toghchi, M. S., & Arntz, A. (2020) 2

Clinical Psychology in Europe
2021, Vol. 3(4), Article e7727
https://doi.org/10.32872/cpe.7727

https://www.psychopen.eu/