Reliability assessment of a peer evaluation instrument in a team-based learning course

OBJECTIVE: To evaluate the reliability of a peer evaluation instrument in a longitudinal team-based learning setting. METHODS: Student pharmacists were instructed to evaluate the contributions of their peers. Evaluations were analyzed for the variance of the scores by identifying low, medium, and high scores. Agreement between performance ratings within each group of students was assessed via intra-class correlation coefficient (ICC). RESULTS: We found little variation in the standard deviation (SD) based on the score means among the high, medium, and low scores within each group. The lack of variation in SD of results between groups suggests that the peer evaluation instrument produces precise results. The ICC showed strong concordance among raters. CONCLUSIONS: Findings suggest that our student peer evaluation instrument provides a reliable method for peer assessment in team-based learning settings.