Challenge seeking is an important component of children's personal and academic development. Defined in this paper as a set of beliefs and behaviors that propels individuals to initiate and persist at difficult ventures, challenge seeking is a key indicator of mastery goal orientation. This orientation has been linked with a number of positive and…

From an evolutionary perspective, the normal social play of children involves kids of various ages. Our human and great-ape ancestors most likely lived in small groups with low birth rates, which made play with others of nearly the same age rare. Consequently, the evolutionary functions of children's social play are best understood by examining…

This study examined the developing object knowledge of infants through their visual anticipation of action targets during action observation. Infants (6, 8, 12, 14, and 16 months) and adults watched short movies of a person using 3 different everyday objects. Participants were presented with objects being brought either to a correct or to an…

Two studies involving 108 infants of 6, 9, and 12 months showed that providing infants with multiple action-relevant properties elicits a rich action repertoire. (RJC)

For both 6 and 11 year olds, social knowledge had a significant influence on test phase responses. It is maintained that the study clarifies the relationship between the use of knowledge-based and similarity-based information in children's acquisition of concepts. (BG)