What is cognitive development? Expert Dr Samantha Durrant answers parents' questions around this tricky subject, and how it ...

Piaget introduced a category-theoretic formulation of cognitive development in the late 1960s and extended it during the 1970s. The new theory, which has received surprisingly little attention from ...

Susan Wolcott, CPA, Ph.D., recommends some practical ways to determine what stage of cognitive development your students have reached.

Kohlberg's claim that moral development proceeds through an invariant sequence of stages was examined experimentally by attempting to induce regression and stage skipping. Fifth- through seventh-grade ...