Suggests that categorization tasks be included in India's preschool programs. (WY)

Contrary to Luria's hypothesis, verbal control did not affect sensori-motor performance in this experiment involving 160 preschool children in four age groups tested on Luria's 2-choice tasks. (WY)

Uses data from earlier study by Hollender to estimate mental ages for four quartiles of intelligence for a seven-year span (ages 12-18). Comparison of four groups at some mental age with groups where age or grade is held constant, regarding realistic vocational choices, suggests that mental age concept might be more meaningful than intelligence in…

This study based on a PhD dissertation submitted to Wayne State University, indicates a "conceptual distinction within conventional Pigetian conservation tasks...The results indicate that identity conservation is developmentally prior to equivalence conservation. (Author)

The research project is being supported by a grant from the Bureau of Research, U.S. Office of Education (OEC 6-10-235)

Research supported in part by grant MH-07994-05 from the National Institute of Mental Health.

Investigates the relationships among the first three stages of cognitive, role-taking, and moral development in both transitional and nontransitional subjects ages 5 to 14 years in order to determine whether the pattern of associations conformed more adequately to the "functional unity" model or to the "necessary but not…

Results showed that development is different. Downs syndrome (DS) infants manifested delayed achievement of all tasks studied and were less likely than normal infants to repeat an achieved success. In addition, errors committed by the DS infants did not conform to the characteristic error pattern theoretically predicted for each task. (Author/RM)

A longitudinal study among American adolescents revealed (1) an insignificant impact of field dependence-independence on the development of formal operational thought; (2) continuous development of combinatorial reasoning and propositional logic abilities, but little increase in comprehension of proportionality; and (3) sex differences in formal…

Proposes a three-level model of cognitive processing to account for complex monitoring when individuals are faced with ill-structured problems (i.e., problems on which opposing or contradictory evidence and opinion exists). (Author/RH)