The Effect of Evaluating Others' Decision-Making Results on Subsequent Decision-Making.

Effective decision-making is crucial for both individuals and organizations. To improve individual's decision-making, traditional methods involve practicing and providing feedback. While these methods are effective, we propose evaluating others' decision-making as a more efficient training approach, and in this study, we explore its potential through two experiments. In Experiment 1,109 participants completed an initial task and then took part in training under two conditions: evaluating others' decision-making results as correct or incorrect, and practicing decision-making with feedback. After the training, all participants completed a final decision-making task. The results indicated that evaluating others' decision-making results significantly enhanced accuracy in the final task compared to practicing with feedback. In Experiment 2 with 110 participants, we replicated the findings using a different decision-making task. Our results suggest that evaluating others' decision-making results can improve the accuracy of subsequent decision-making.