Evidentials are grammatical elements such as affixes and particles indicating the source of knowledge. We provide an overview of this grammatical category and consider three research domains to which developmental studies on evidentiality contribute: the acquisition of linguistic means to characterize knowledge, the conceptual understanding of…

Recent research suggests that acquisition of mental-state language may influence conceptual development. We examine this possibility by investigating the conceptual links between evidentiality in language and suggestibility. Young children are disproportionately suggestible and tend to change their reports or memories when questioned. The authors…

Examines the distinctions and interrelations between necessary and contingent knowledge and relates these concepts to the distinction between scientific and empirical validity. Considers how these distinctions can be applied to an understanding of morality, arguing for a relational rather than absolutist approach to questions of necessity. (JPB)

Argues that in addition to domains of value, young children recognize distinct domains of truth. Notes that although value judgments have been shown to be differentiated by age 4, research suggests truth judgments may not be similarly differentiated before grade school age. (JPB)

Explores parallels in children's moral and mathematical judgments. Considers how children coordinate these judgments with concepts of authority, particularly when using conventionally determined symbol systems to convey logical and social meanings. (JPB)