Each of the three great schools of developmental psy- chology represented in this vo1ume--psychoana1ytic, cogni- tive-developmental, and Vygotskian--diverges in important ways. But more recent changes in each discipline have led to new possibilities for theoretical integrations. Each ori- entation has begun to focus upon the problem of "meaning construction", that is, how a person's subjectivity and con- sciousness is created through his interaction...