The focus of this study is the nature and concomitants of pretend play among young children with autism. Age- and language-matched children with autism ("n"= 27), autism spectrum disorder ("n"= 14), and developmental disorders without autism ("n"= 16) were administered the Test of Pretend Play (ToPP; Lewis &…

Although individual differences in reactions to novelty in the toddler years have been consistently linked to risk of developing anxious behavior, toddlers' attention toward a novel, putatively threatening stimulus while in the presence of other enjoyable activities has rarely been examined as a precursor to such risk. The current study examined…

The goals of this study were to examine the relations between and trajectories of mothers' and children's social positive expressivity (PE). Mothers' and children's PE were observed annually for four years beginning when children were approximately 18 months old (N = 247; 110 girls). Based on correlations, there was evidence of rank-order…

Studying short-term dynamic processes and change mechanisms in interaction yields important knowledge that contributes to understanding long-term social development of children. In order to get a grip on this short-term dynamics of interaction processes, the authors made a dynamic systems model of dyadic interaction of children during one play…

This longitudinal study examined individual differences and correlates of focused attention when toddlers were approximately 18 months old (T1; n = 256) and a year later (T2; n = 230). Toddlers' attention and negative emotionality were reported by mothers and non-parental caregivers and rated globally by observers. Toddlers' focused attention also…

Found that 75 percent of variance in children's first-grade achievement was predicted by measures of their achievement, object play, and peer interaction in kindergarten; and that aspects of first graders' personality disorders and aggressive behavior were predicted by their popularity in kindergarten. (MM)