Suggests a resolution to the apparent conflict between the Freudian and humanistic/transpersonal views of human nature. Presents a model which allows for the fulfillment of Freud's desire to account for both the life and death instincts as manifestations of a tendency to restore an earlier state of things. (LLL)

This comprehensive paper proposing the use of evolutionary theory as a basis for studies in developmental psychology includes these specific sections: (1) Developmental Theories--a brief overview, (2) Individual Differences, (3) Culture and Inbreeding, (4) Sexual Dimorphism, (5) Critical Periods in the Development of Attachments, (6) Continuity…

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…

Comments on Belsky, Steinberg, and Draper's article in this issue. Offers three likely reasons for adaptation of human behavior. Argues that Belsky, et al. use only two of these reasons in their proposed evolutionary theory of socialization. Suggests that an evolutionary approach is useful if it integrates diverse facts, aids clinical practice,…

A review of the twin literature and analyses of two large twin samples found identical twin correlations higher than fraternal twin correlations by about .20 for a variety of traits of ability, personality and interests. This was interpreted as indicating that about half of the variation among people in a broad spectrum of psychological traits is…