“…It is notable the investment that research has been dedicated to the construction and validation of reliable assessment measures of play. Regarding the country of origin of the studies included in this systematic review, it is possible to observe that the USA is the country with most studies (n = 34) (Barton, 2015;Bulotsky-Shearer et al, 2012;Coolahan et al, 2000;Coplan & Rubin, 1998;Coplan et al, 2001Coplan et al, , 2014Esposito & Koorland, 1989;Fantuzzo et al, 1995;Farmer-Dougan & Kaszuba, 1999;Farver & Lee-Shin, 2000;Fehr & Russ, 2013Gagnon et al, 2014;Gal-Szabo et al, 2019;Hart & Sheehan, 1986;Hartle, 1996;Johnson et al, 1980;Kinsman & Berk, 1979;LaForett & Mendez, 2017;Lagacé-Séguin & d'Entremont, 2006;Marcelo & Yates, 2020;Maxwell et al, 2008;Minnett et al, 1994;Nelson et al, 2017;Pierce-Jordan & Lifter, 2005;Pollack et al, 2016;Roopnarine et al, 1992;Sanders & Harper, 1976;Saracho, 1995Saracho, , 1996Saracho, , 1999Shire et al, 2018;Wilson, 2015;Wintre, 1989), contributing to the construction and validation of some assessment instruments of play (e.g., PPBS; PSPI; PIPPS; APS-P; APS-P-BR).…”