There is an abundance of literature on young individuals who show early signs of talent and on older individuals who have demonstrated their abilities throughout the years. This research aims to look at those individuals who are in between, that is, graduate students who have the demonstrated potential to achieve within their fields of study. This…

The designs, results, and conclusions of several related research studies which examine the role of student preferences in problem-solving strategies are summarized. Emphasis is upon the relationship between an individual's stated preference and his or her ability to implement this preference and successfully solve a related science task. Students…

Two selection and nine evaluation hypothesis testing tasks varying systematically with respect to causality, response alternatives, and context continuity were administered to two samples of adults (N=35; N=32). It was to determine effects of these variables and the degree to which subjects reasoned with material conditional, biconditional,…

Compared laboratory and naturalistic content influences on formal reasoning tasks of 90 13-, 15-, and 17-year-olds, focusing on tasks requiring ability to control variables. Results indicate that 8 to 20 percent of performance variance was associated with task content. Content effects were also shown to reflect expectations about task variables.…

This investigation focused on the stage of formal operational reasoning in the acquisition of astronomy concepts, and on efficacy of different instructional experiences for facilitating cognitive change in college students. Included are selected results and directions for future research. (SK)

Students from thirteen middle school science classes participated in this study to determine their formal reasoning ability and locus of control. Students were observed through a sequence of lessons for their classroom behavior. Results indicated that achievement was related to high formal reasoning ability, attention to instruction, and internal…

Students (N=49) enrolled in a physics course for elementary teachers were evaluated for their abilities to use: (1) combinatorial logic; (2) separation and control of variables; (3) proportional reasoning; and (4) reciprocal implications. Performance of four Piagetian tasks during interviews was treated as a measure of the degree to which students…

A model for the development of scientific reasoning in adolescents was formulated largely upon the basis of Piagetian theory. Included as potential determinants of scientific reasoning were: experience; age; locus of control; field dependence-independence (FID); rigidity/flexibility; intelligence quotient (IQ); and sex. Causal relationships…

Examines content and problem effects of formal thought in 13-year-olds (N=120). Three controlling variables tasks with different content and two question-type tests (analysis and controlling questions) were administered. Findings, among others, indicate that content and problem effects contribute to variance on formal reasoning problems.…

A model for the development of scientific reasoning in adolescents was formulated largely upon the basis of Piagetian theory. Included as potential determinants of scientific reasoning were experience, age, locus of control, field independence-dependence (FID), rigidity/flexibility, intelligence quotient (IQ), and sex. Causal relationships between…

Reported are results of a study designed to determine developmental patterns in proportional reasoning and to determine if these patterns are similar regardless of educational level and regardless of problem context. Data from 2282 subjects in grades 6-13 were collected using the Test of Logical Thinking (TOLT), and then examined for subjects who…

Twelve pupils from each of 13 middle school science classes participated in this study. Findings, among others, indicate that two of nine engagement measures (attending and generalizing), together with formal reasoning ability, were related to process skill, achievement, and retention. (JN)