Argues that Nigerian tribal myths and beliefs keeping infants and young children from looking into mirrors interfere with the early development of self-concept. The self-concept of infants is viewed as contributing importantly to the way they perceive other aspects of their environment. (RH)

Investigated whether instructing children in the component skills underlying Piagetian transitivity tasks would increase their performance on both transitivity-related tasks and on reasoning tasks not directly related to transitivity. Results indicate that incorporating the quantification of certain abstract symbols, training can influence…