This study proposes to (1) explore the responses of boys and girls at three age levels to several different barrier situations; (2) assess the personality correlates associated with barrier behavior; (3) evaluate covariance differences between the sexes; and (4) determine the relationship between barrier behaviors and sex-role typing. A total of…

Specifies some problems in the Piagetian characterizations of assimilation and accommodation and offers an alternative formulation intended to resolve some conceptual anomalies. On the basis of the revision, the orthogenetic law of developmental progression is explicitly derived. Further, Piaget's notion of "equilibrium" is extended into…