Three experiments examined whether 4- and 5-year-olds can explicitly revise uncertain beliefs in light of disconfirming evidence. We considered 2 factors that might influence belief revision: (a) the type and variability of evidence provided, and (b) whether children generated an explanation of their initial hypothesis. When provided with limited…

The development of theory of mind (ToM) in infancy has been mainly documented through studies conducted on a single age group with a single task. Very few studies have examined ToM abilities other than false belief, and very few studies have used a within-subjects design. During 2 testing sessions, infants aged 14 and 18 months old were…

Contrast information could be useful for verb learning, but few studies have examined children's ability to use this type of information. Contrast may be useful when children are told explicitly that different verbs apply, or when they hear two different verbs in a single context. Three studies examine children's attention to different types of…

A long history of research has considered the role of iconicity in language and the existence and role of nonarbitrary properties in language and the use of language. Previous studies with Japanese-speaking children, whose language defines a large grammatical class of words with clear sound symbolism, suggest that iconicity properties in Japanese…

Pragmatic differentiation in bilinguals is the ability to use two languages appropriately with different speakers. Although some sensitivity emerges by 2 years, the effects of context on these skills and their relation to other developing metacognitive capacities have not been examined. The current study compared the language use of 28 bilingual…

We longitudinally investigated the development of endogenous control of attention in 2 types of tasks that involve competition for attentional focus at 7, 9, and 31 months of age. At all 3 sessions, children participated in a multiple object free play task and a distractibility task. The results revealed both developmental differences and…