“…To examine the bivariate association between maternal ACEs and child developmental delay, correlation analysis ( McDonnell and Valentino, 2016 ; Racine et al, 2018 ; Coe et al, 2020 ; Chang et al, 2021 ), χ 2 -test ( Folger et al, 2018 ), and crude model of multinomial regression analysis ( Sun et al, 2017 ) were applied. Of the six studies, three showed significant positive bivariate associations between maternal ACEs and child outcomes ( McDonnell and Valentino, 2016 ; Sun et al, 2017 ; Coe et al, 2020 ), whereas three showed null results ( Folger et al, 2018 ; Racine et al, 2018 ; Chang et al, 2021 ). For example, McDonnell and Valentino (2016) examined the effects of maternal childhood experiences of abuse and family dysfunction on developmental delay in children.…”