This data compared language complexity measures, birth information, and family data for twins and singletons of the same sex, age, and socio-economic status. The subjects were four pairs of male twins, four pairs of female twins, four pairs of opposite sex twins, and 24 singletons, 32-33 months of age. Samples of each child's spontaneous…

Trotman responds to two criticisms of her previous research (EJ 168 902) on racial differences in intelligence and achievement. She clarifies the conclusions criticized by Longstreth (TM 503 913) and criticizes the conclusions reached by Wolff (TM 503 914). (BH)

Major problems in the field are presented through a brief review of Burt's work and a critical account of the Hawaiian and British schools of biometrical genetics. The merits and demerits of Christopher Jencks' study are also discussed. There follows an account of the principle of genetic variation with age, a new concept to the…

The assumptions that biological differences between the sexes are universal, inevitable, and desirable, and that they justify the social inequality of the sexes, were examined. It was suggested that feminists base demands to remedy this imbalance on the proposition that sex differences are due to both nurture and nature. (Author/KR)

A dialectical approach is used to explore the relationship between individual specialization, collective adaptation, and rate of environmental change for both higher and lower organisms. The nature-nurture controversy and the "generation gap" are discussed in terms of this interrelationship. (BD)

This paper presents a critique of recent attempts to explain psychological differences between the sexes in terms of biology. (BD)

Argues that science, like any other human activity, is limited by the culture and the age to which it belongs. Examines the Iowa Child Welfare Research Station's conclusion that the IQs of young children were affected by specified environmental conditions in light of shifting perceptions of reality in the 1930s and 1940s. (Author/BE)

Notes that preschool compensatory education has not resulted in any appreciable, durable gains in I.Q. or scholastic achievement. Posits that compensatory programs remedied deficiencies in knowledge but not in cognitive processes. Suggests further research into the nature of intelligence and its malleability. (PGD)

The idea that social problems were caused by people who were genetically unfit, that such people were readily identified, and that they should not be permitted to reproduce was an important part of discussions about mental deficiency in the period from 1900-1940. Mention is made of the papers which follow. (IS)

Discusses the reasoning and strategies of the biological approach to sex differences research. Refutes Rogers' and Walsh's (1982) perspective that, because biological and environmental factors are intertwined in the development of the nervous system, the biological contribution cannot be studied profitably. (CMG)

The article suggests that retarded behavior is maintained by certain events in the environment and their relationship to an individual's behavior. Maintenance of these behaviors is attributed to positive reinforcement, avoidance behavior, and contingency schedules. Several examples of the maintenance effects of each of these paradigms are given.…

This study of creative genius argues that creativity can best be understood as a Darwinian process of variation and selection. The artist or scientist generates a wealth of ideas, and then subjects these ideas to aesthetic or scientific judgment, selecting only those that have the best chance to survive and reproduce. The book draws on the latest…

This book calls into question the degree to which early childhood experiences affect psychological development, critiquing three related myths: (1) personality is formed by early childhood experiences; (2) mental disorders are caused by early childhood experiences; and (3) effective psychotherapy depends on reconstructing childhood experiences.…

Highlights a research study indicating that children can spontaneously impose linguistic structure on their communication, even in the absence of a conventional linguistic environment. Subjects (16- to 50-month-old deaf children) had normal social environments but severely restricted language environments because of their disability. (JN)