“…This is especially important given the reported generalization (Carruthers et al, 2020;Ostmeyer & Scarpa, 2012;Rao et al, 2008) and maintenance (Bellini et al, 2007;Neely et al, 2016;Rogers, 2000) benefits of practice-based research. Thirdly, future research should consider seeking input from teachers, peers and also children with ASD, as reflected within broader participatory research recommendations (den Fletcher-Watson et al, 2019;Houting et al, 2020;Jivraj et al, 2014;Lau & Stille, 2014) and, consequently, add to the social validity of this evidence base. Fourthly, given that the vast majority of play-based interventions included in this review were based on predominately male samples across the UK and USA, future research may consider including more geographical and gender representative samples, as identified within other systematic reviews in the field (Gibson et al, 2020;Kossyvaki & Papoudi, 2016;Stiller & Mößle, 2018).…”