Students in classes using a self-instructional unit on meteorology and climatology which provided research data from which generalizations could be drawn increased their critical thinking skills more than groups using conventional earth science texts but did not differ significantly in performance on an achievement test. (AL)

There were no differences in critical thinking, understanding of science, or achievement outcomes between students using an ISCS type instructional unit and those given group instruction over the same content. (AL)

Investigates the extent to which thinking skills and mathematical competency would predict the course performance of freshman and sophomore science majors enrolled in physics courses. Finds that algebra ability and critical thinking skills were the best predictors. (Author/YP)

The five formal operational reasoning modes in the Group Assessment of Logical Thinking were found to be statistically significant predictors of critical thinking abilities as measured by the Watson-Glaser Critical Thinking Appraisal and were significant predictors of science and mathematics grades. (PR)