Discusses the two major theoretical traditions from which the ideas discussed in the Noam (PS 524 984) and the Cicchetti (PS 524 985) articles in this issue are drawn. Describes their divergences from traditional Piagetian and attachment theorists, and the approaches each has taken to common themes in their work. Concludes by setting out…

Developmental theories can be augmented by incorporating knowledge about atypical ontogenesis. Examination of individuals with high-risk conditions and psychopathological disorders can shed light on system organization, disorganization, and reorganization. Child maltreatment is examined to illustrate benefits from studying individuals subjected to…

In this article particular attention is paid to research directly or indirectly relevant to child development programs and supplemental child care. Emphasis is given to the integration of findings, the identification of unaddressed questions, and methodological problems. (MS)