Reports that form matching increased with age both in number of subjects with reliable preferences and in strength of preferences, but that at all ages form matches predominated. (Author/DR)

This study examines the longitudinal relationships between mastery motivation and differentiated measures of intellectual development assessed at 1 and 3 1/2 years of age in a sample of 35 children (21 boys and 14 girls). At one year three types of mastery motivation were assessed using structured tasks: (1) producing effects (engaging in…

Reports a two-year longitudinal study of 55 adolescents and young adults who were divided into three groups and given Reflective Judgment Interviews and the Concept Mastery Test to investigate sequentiality of reflective judgment stages. Results indicate support for seven hypothesized shifts in epistemic assumptions over time.(Author/RH)

The authors are emmersed in a comprehensive review of the literature on intellectual sex differences. This paper consists of the first progress report and the tentative hypotheses of the work completed so far. Discussion is initially concerned with verbal and spatial abilities. It is concluded that girls learn language earlier, and may continue to…

A sex-related difference, favoring boys, was found on initial performance of two samples (one British, one American) of 10- and 11-year-old children on tasks involving volume and density. After classroom instruction that included opportunities for interaction with appropriate materials, both sexes performed at higher levels but differences…

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)

Research supported in part by research grant MH-12656 and training grant MH-8298, National Institute of Mental Health, U.S. Public Health Service.

Determined that males (N=70) demonstrate higher level of intellectual development than females (N=70), that males mature intellectually earlier than females, and that there appear to be factors other than age and sex that are related to development of formal operational reasoning. Implications of these and other results are discussed. (JN)

Seldom are college students introduced to theories that describe how they and other students change intellectually during their college years. Two epistemological perspectives on cognitive development in college students and how they can be presented to students are examined in this paper. The first perspective is William Perry's forms of…

The purposes of this study include: (1) determining whether socioeconomic status (SES) or verbal ability (VA) exerts greater influence on childrens' performance of Piagetian tasks; (2) devising an instrument for measuring childrens' level of cognitive development which does not depend on verbal ability alone; and (3) adapting materials for teacher…

Reexamines Yoruba children from educated and traditional families after five years, finding that those growing up in a privileged environment showed increasingly superior mental scores. (Author/JM)

The major purpose of this study was to investigate developmental patterns of understandings of four types of selected phenomena possessed by economically and racially different boys and girls. A total of 64 boys and girls, 32 blacks and 32 whites, were selected from Head Start, kindergarten, nursery, and primary schooling environments and then…

Results of several studies of cognitive and cultural correlates and determinants of early IE development are discussed, and some implications of the findings are pointed out. In studies of correlations between IE and intelligence test scores, results show that the scores increase regularly with age, from age 4 through 8, and there are fairly…

This paper examines evidence supporting the hypothesis that environment differentially affects intelligence in a sex-specific manner. The current position that environment and heredity contribute interactively to intelligence obscures the greater vulnerability and exposure of males to environmental influences and the reciprocal lack of equivalent…