Abstract
Seventy-nine third year British university students were randomly selected and tested on the Watson-Glaser Critical Thinking Appraisal and the Eysenck Personality Inventory. Men did perform at a significantly higher level than women did on the Watson-Glaser instrument, and this performance was associated with their significantly higher level of performance in the subtests of Inference and Evaluation of Arguments. There was no difference in performance which could be related to enrollment in an Arts or Science course, except for the test of Inference in which Science students did have a very significantly higher score than Arts students did. Performance on the Watson-Glaser instrument was not significantly associated with scores of extroversion-introversion on the Eysenck Personality Inventory.