© 2018 Children, Youth and Environments Children, Youth and Environments 28(2), 2018 Unleashing the Power of Play: Research from the International Play Association 20th Triennial Conference Janet Loebach Centre for Addiction and Mental Health London, Canada Theresa Casey International Play Association: Promoting the Child’s Right to Play Edinburgh, Scotland John H. McKendrick Glasgow School for Business and Society, Glasgow Caledonian University Glasgow, Scotland Acknowledgement of Editorial Review Team The guest editors of this special issue of Children, Youth and Environments would like to acknowledge the outstanding efforts of the editorial review team, representing IPA branches from around the world. We are very grateful for the time and expertise you leant to the production of this issue, and for your ongoing dedication to the International Play Association and its mandate. Sruthi Javdekar (Atmakur) Children’s Environments Research Group Pune, India IPA India Sudeshna Chatterjee Action for Children's Environments New Delhi, India IPA India Janine Dodge Schulich School of Business, York University São Paulo, Brazil IPA Brazil Scott Duncan Auckland University of Technology Auckland, New Zealand IPA Aotearoa NZ ii Marion Flett Glasgow, Scotland IPA Scotland Sarah Goldsmith Glasgow Caledonian University Glasgow, Scotland IPA Scotland Mine Gol-Guven Bogazici University Turkey IPA Turkey Nola Harvey Faculty of Education and Social Work, University of Auckland Leigh, Auckland, New Zealand IPA Aotearoa New Zealand Jane Hewes Faculty of Education and Social Work, Thompson Rivers University Kamloops, British Columbia, Canada IPA Canada Tom Jambor School of Education, The University of Alabama at Birmingham Birmingham, Alabama, USA IPA USA Maggie Koong May-kay Victoria (China) Education Group Hong Kong IPA Hong Kong Marianne Mannello Play Wales Cardiff, Wales, UK IPA EWNI Grant Menzies The City of Play Ltd Glasgow, Scotland Michelle Stone Faculty of Health, Dalhousie University Halifax, Nova Scotia, Canada IPA Canada