St. John's Law Review

Bias, the Brain, and Student Evaluations of Teaching

By: Deborah J. Merritt

Student evaluations of teaching, a common fixture at American law schools, harbor surprising biases.  Extensive psychological research demonstrates that students’ assessments respond overwhelmingly to a professor’s appearance and nonverbal behavior.  For example, student ratings of professors’ abilities after viewing just thirty seconds of silent videotape footage correlate strongly with end-of-semester evaluations from the same professors’ pupils.  Because the nonverbal behaviors that influence teaching evaluations are rooted in physiology, culture, and habit, there is a potential for characteristics like race and gender to affect evaluations.  The current method of gathering evaluations, moreover, allows social stereotypes to filter students’ perceptions and increases risks of bias because it taps students’ intuitive cognitive processes—what psychologists have referred to as “System One” judgments. 

To improve the accuracy of student evaluations and reduce the taint of bias, schools must design new evaluation systems.  Systems based on facilitated group discussion, for example, would awaken the more reflective, deliberative judgments that psychologists term “System Two” decisions.  This article illuminates the cognitive processes that underlie all facets of the legal system as it draws upon research in cognitive decision making to present the compelling case for reforming the current system of evaluating professors' classroom performance.