Studied 622 adults and 211 undergraduates to determine the relationship of perceptual speed and speed of marking psychometric answer sheets to individual differences in performance on psychometric tests. Findings suggest strong relationships between age, speed, and intelligence-test performance. (RJC)

Previous investigations on Piagetian cognitive levels among college students both within and across academic disciplines have not addressed the issue of possible differences in cognitive levels between traditional undergraduates and older returning students. Piagetian cognitive levels were studied among traditional- and nontraditional-age college…

Measures of memory for order were correlated with measures requiring mental manipulation, achievement, and aptitude using college and fifth grade students. A significant relationship was found for fifth graders but not for college students, suggesting that the nature and capacity of short-term memory changes with age. (Author/PN)

The retention of the conditioned response was tested in a retroactive interference paradigm. Results suggested that what is learned by children in simple conditioning paradigms is different than what is learned by adults in the same paradigms. (Author/PN)

The decision making processes of children in a probabilistic environment were studied within the context of the theory of signal detection (TSD). The relationship between the age of the child and his ability to revise decision criteria was examined, as well as the appropriateness of TSD measures and methodology with children. It was hypothesized…

This paper investigated the effects of educational attainment on occupational status and earnings among men. Drawing on nine data sets, it attempted to assess the effects of schooling that persist after measured and unmeasured aspects of family background, and measured cognitive skill were controlled. It also examined differences in the effects of…