“…Most of the studies were published in the last decade ( n = 24); the remaining studies were published between 1997 and 2010. In 29 studies, a single case design was used (Dunphy & Hens, 2018 ; Gaskin et al, 2012 ; Hetzroni & Banin, 2017 ; Hronis et al, 2019 ; Kim et al, 2014 ; ; Lancioni, O’Reilly, et al, , 2006 , 2013 ; Lancioni, Singh, O’Reilly, Green, et al, 2014 ; Lancioni, Singh, et al, 2006 , 2013 ; Lancioni, Singh, O’Reilly, Sigafoos, et al, 2014 ; Lancioni, Smaldone, et al, 2006 ; Perilli et al, 2019 ; Simacek et al, 2017 ; Singh et al, 2017 ; Stasolla, Damiani, et al, 2014 ; Stasolla & O’Caffò, 2013 ; Stasolla et al, 2013 , 2015 , 2017a ; Stasolla, Perilli, Caffò, et al, 2017 ; Stasolla, Perilli, et al, 2014 ). In addition, two studies used a pre‐experimental design (Hoffman et al, 2017 ; Jonker et al, 2015 ) and one study used a randomized control trial (Cooney et al, 2017 ), while one study did not report about the study design (Monlux et al, 2019 ).…”