With just one exception, all of the volumes in Terman's Genetic Studies of Genius report the results of a longitudinal study of more than a thousand intellectually gifted children. That single exception is Volume II, Cox's single-authored "The Early Mental Traits of Three Hundred Geniuses," which instead was a retrospective study of 301…

Increased frequency and higher magnitude of correlations for siblings and the stability over time of the correlations among the data for siblings underscore the possibility of a genetic basis for the similarity of intellectual functioning among siblings. (Author)

This article discusses research into the question of whether the expectation of hereditary factors in man's unique form of communication is supported by any evidence. The research is divided into three broad categories, dealing with voice, with speech, and with language. (CFM)

Assesses the etiology of the covariation between mathematics performance and general cognitive ability in data from a sample of 555 twins selected for learning deficits and from a sample of 570 control twins pairs. Results show that the phenotypic relationship between mathematics and general cognitive ability is due primarily to genetic…

This review describes the prenatal and postnatal development of the human cortex. Neurogenesis, neuronal migration, dendrite maturation, synaptogenesis, and white matter development are discussed. In addition, the concept of "critical" or "sensitive" periods is discussed as well as genetic and environmental influences (Nature-Nurture). The effects…

Seventy-one college general biology students were taught a unit in Mendelian genetics by the traditional lecture method. Emphasis was placed on meiotic formation of gametes, dominance, segregation, and independent assortment. The Punnett square model was used for all practice problems. While using this model, students were asked to: (1) identify…

Reflections on psychological perspectives of aging are focused around issues of biological changes and mental functioning, genetic factors in aging, psychological changes with aging, individual differences in mental functioning and the intellectual decline of the aged. (EH)

Ronald C. Johnson argued that if early environmental stimulation or deprivation has a significant effect on intellectual ability, then individuals who are genetically identical and who are exposed to a common early environment should resemble one another more closely in IQ than similar individuals who have not shared a common environment. Johnson…

Provides some background from the biological and behavioral sciences relevant to the education of young children. The author concludes that experience gained by age 8 (particularly during the years 0 to 5) matters for the rest of an individual's life. (PEB)

Examines several issues relative to the role of immaturity in the instruction of man, and how the young are inducted into the species. (DM)

Contents of this symposium comprises: Introduction (W. B. Dockrell); The Genetics of Intelligence (Sir C. Burt); Structuring Mental Acts (P. R. Merrifield); A "Piagetian" Test of Cognitive Development (R. D. Tuddenham); The British Intelligence Scale (R. W. Warburton); Intelligence (P. E. Vernon); Hierarchical Theories of Mental Ability…

From the monthly Saturday Review supplement, "Education in America, sponsored by the Charles F. Kettering Foundation.