Notes the tumultuous relationship between researchers and theorists who identify with either Jean Piaget or Lev Vygotsky. Argues that both theorists start from basically the same place in developing their contributions to the study of human development and that new and important theoretical contributions may be possible through a dialectical…

Explores developmental issues regarding domain theory, a theory explaining moral development. Concludes that this theory does not explain how domains of moral reasoning and behavior evolve, neglects social and historical aspects of domain development, and does not recognize the effects of individual differences on domains. (JW)

Addresses the extent to which differences in Piagetian and Vygotskyan psychologies make their theories incompatible. Differences result from a Vygotskyan belief in a material primary cause for development; Piagetians do not hold this view. Explores this difference in perspective, concluding that, despite it, the two approaches are compatible. (JW)