Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in…

Four experiments examined Canadian 2- to 3-year-old children's (N = 224; 104 girls, 120 boys) thoughts about shared preferences. Children saw sets of items, and identified theirs and another person's preferences. Children expected that food preferences would be more likely to be shared than color preferences, regardless of whether the items were…

Analyses of elicited pantomime, primarily of English-speaking children, show that preschool-aged children are more likely to symbolically represent an object with gestures depicting an object's form rather than its function. In contrast, anecdotal reports of spontaneous gesture production in younger children suggest that children use multiple…

Observed 32 preschoolers' interactions with their toddler siblings. Preschoolers' references about emotions were more likely to be about the toddler than the self. Preschoolers who were skillful perspective takers talked more about internal emotional states and more frequently about the toddler and themselves than did poor perspective takers. (BC)

Children who interacted with a robot that spoke reciprocally to them uttered more speech that maintained the topic of conversation, and engaged in more verbally mediated social play than children who interacted with a randomly speaking robot. Gender differences in children's looking at their mother in the room were observed. (BC)

Addressing methodological limitations, Study One compared parent-child interactions of normal and language-delayed children; Study Two investigated whether mothers adjust the length of their utterances to the child's ability to comprehend or to produce language; Study Three probed interactional variables associated with variations in the…