To investigate the factors determining why some children succeed at certain intellectual tasks while others of equal or near equal IQ, age, and motivation are unable to master the same task, 145 female and 144 male eighth grade students were administered "An Inventory of Piaget's Developmental Tasks" (IPDT). Labeled as concrete,…

For 139 students, algebra prognosis test scores and performance in seventh-grade mathematics best predicted algebra grades in grade eight, whereas IQ, problem solving, and prognosis scores best predicted achievement on a standardized algebra test. No sex difference in achievement scores was found, but girls attained higher percentage grades. (MNS)

To show the difficulty of eliminating test bias and to develop a methodology for distinguishing between the effects of prior knowledge and of skill development on reading comprehension, 207 eighth grade students from rural and urban areas were administered an 18-question reading comprehension test. Quantitative and qualitative effects of prior…

This study conducted in a midwestern city, addressed problems experienced by learning disabled (LD) students in recalling specialized science and social studies vocabulary. This apparent problem was confirmed by a teacher questionnaire and analyses of types and frequency of test errors on recent exams. Students appeared unfamiliar with memory…