Proposes a phase model describing the course of first pregnancy, while outlining an extended view of pregnancy as both a biological and psychosocial process. Four ideal phase types are distinguished: a disruption phase of radical change, an adaptation phase of readjustment, a centering phase focused on production, and a final phase of anticipation…

Agrees with Levenson and Crumpler's critique of ontogenetic theories as overly stressing biological determinism. Disagrees with their proposal, in discussing sociogenic and liberative models, that social influences be confined to a weak determinism. Suggests that a problem for developmental theories is to understand ways of increasing individuals'…

Sees Levenson and Crumpler's liberative model as idealistic, and critiques apparently anti-materialistic implications of the model. Maintains that Levenson and Crumpler's suggestion that the goal of adult development is to free the individual from environmental and biological influences is bad science but constitutes a valuable sermon. (BC)

Compares ontogenetic models, which stress development through a series of stages; sociogenic models, which stress the influence of social context on adult behavior; and liberative models. Liberative models do not treat adult development as entirely dependent on biological or social determinism, and do stress individuals' conscious efforts at…

Homo sapiens is the only extant species for which there exists a significant post-reproductive period in the normal lifespan. Explanations for the evolution of this species-specific trait are possible through "non-deterministic" theories of aging positing "wear and tear" or the failure of nature to eliminate imperfection, or…