Research Findings: This study extends the understanding of the sibling effect on children's theory of mind (ToM) among Chinese preschoolers by adopting an ecological perspective. The participants were 225 Chinese preschoolers, comprising 100 children with siblings (M[subscript age] = 4.54 years, SD = 1.11, 55 boys) and 125 children without…

The ability to understand and effectively interact with others is a critical determinant of academic, social, and life success (DiPerna & Elliott, 2002). An area in particular need of scalable, feasible, usable, and scientifically sound assessment tools is social-emotional comprehension, which includes mental processes enlisted to encode,…