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…

Suicide proneness and self-destruction scales, together with measures of self-favorability and self-confidence, were administered to two samples (n=106 and n=213). It is suggested that women are self-destructive in passive ways, reflecting their lack of self-favorability and confidence and manifested by failure to react to everyday situations in…

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…

Investigates the validity of a semiprojective measure of "engagement" with respect to the differential effects of family size. Engagement style refers to the perception one has of oneself as either doing (agent) or being done to (patient). Subjects were 51 male college students ranging in age from 18 to 26 years. (SS)

Summarizes the theory of psychological differentiation and reviews recent cross-cultural research on the roles of child rearing, culture, and ecology in the development of individual, group, and sex differences in the field dependence-field independence cognitive style component of psychological differentiation. (SS)

Used a longitudinal sibling research design and a large, nationally representative sample of 15- to 22-year-old siblings to study shared and unshared environmental influences on delinquency. Although no unshared family environmental influences were found for sisters and mixed-sex siblings, they may have existed for brothers. Data suggested…

This book has been written for the managers of small or medium sized companies who are faced with the problem of training their supervisors. Because the role of the supervisor has to be adapted to the situation in which he works, there cannot be a formula for his development and training. The process will be one of interchange between the training…

A study examined age and sex differences in engagement style and locus of control and their influence on African-American parent-adolescent relationships. The study subjects were 71 students in 9th grade and 57 students in 11th grade from 4 high schools in a large midwestern city; 46 college freshmen attending a large midwestern university; and 46…