2/26/2024 0 Comments First impression bias![]() The Multiple Mini Interview (MMI) format is widely used in the selection of medical students. It is also in accordance with the notion that raters often blend their specific assessment task outlined in MMI-instructions with the self-imposed question of whether a candidate would fit the role of a medical doctor. The correlation between first impression and MMI-performance is in line with the results of corresponding social psychological studies, showing that judgements based on minimal information moderately predict behavioral measures. Prediction was independent of whether or not the rater who rated first impression also rated MMI performance. MMI performance did not increment prediction above the contribution of first impression and vice versa. ![]() Both measures weakly predicted performance in two OSCEs for communication skills, assessed 18 months later. First impression and MMI performance correlated by r = .49. Internal consistency was α = .71 for first impression and α = .69 for MMI performance. Each MMI-task took 5 min and was rated subsequently. First impression was assessed immediately after an applicant entered the test room. To explore its bearing on the MMI method we included a rating of first impression in the MMI for student selection executed 2012 at the University Medical Center Hamburg-Eppendorf, Germany (196 applicants, 26 pairs of raters) and analyzed how it was related to MMI performance ratings made by (a) the same rater, and (b) a different rater. The phenomenon of first impression is well researched in social psychology, but less so in the study of OSCEs and the multiple mini interview (MMI).
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