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HOW WE TEACH

STUDENT RETENTION OF COURSE CONTENT IS IMPROVED BY COLLABORATIVE-GROUP TESTING

¹ Departments of Exercise and Sport Science and Physiology, East Carolina University, Greenville, North Carolina 27858
² Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan 48201

Address for reprint requests and other correspondence: S. E. DiCarlo, Dept. of Physiology, Wayne State University School of Medicine, 540 E. Canfield Ave., Detroit, MI 48201 (E-mail: sdicarlo{at}med.wayne.edu)

We recently reported that collaborative testing (i.e., group test taking) increased student performance on quizzes. It is unknown, however, whether collaborative testing improves student retention of course content. Therefore, this study was designed to test the hypotheses that collaborative-group testing improves student retention of course content. To test this hypothesis, our undergraduate exercise physiology class of 38 students was randomly divided into two groups: group A (n = 19) and group B (n = 19). During exam 1, students from both groups answered questions in the traditional format as individuals. Immediately after completing the exam as individuals, students from group A answered a randomly selected subset of questions from exam 1 in groups of two (1 group had 3 students) to test the effectiveness of collaborative-group testing on test performance and level of student retention. On the next exam (exam 2, 4 wk later), students from both groups answered questions in the traditional format as individuals and responded to the same subset of questions from exam 1. The subset of questions was analyzed to determine the level of retention of the original test material. In addition, immediately after completing the exam as individuals, students from group B answered a randomly selected subset of questions from exam 2 in groups of two (1 group had 3 students). Finally, on the next exam (exam 3, 4 wk later), students from both groups answered questions in the traditional format as individuals and responded to the same subset of questions from exam 2. This protocol followed a randomized crossover design to control for time and order effects. Student retention of course content was reduced when students completed the original examinations individually. In sharp contrast, student retention was improved (P < 0.05) when students completed the original examinations in groups. Results suggest that collaborative testing is an effective strategy to enhance learning and increase student retention of course content.

Key words: active learning; peer instruction; cooperative learning

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