High Quality Content by WIKIPEDIA articles! Affective Events Theory (AET) is a model developed by organizational psychologists Howard M. Weiss (Purdue University) and Russell Cropanzano (University of Arizona) to explain how emotions and moods influence job performance and job satisfaction. The model explains the linkages between employees` internal influences (e.g., cognitions, emotions, mental states) and their reactions to incidents that occur in their work environment that affect their performance, organizational commitment, and job satisfaction. The theory proposes that affective work behaviours are explained by employee mood and emotions, while cognitive-based behaviours are the best predictors of job satisfaction. The theory proposes that positive-inducing (e.g., uplifts) as well as negative-inducing (e.g., hassles) emotional incidents at work are distinguishable and have a significant psychological impact upon workers` job satisfaction. This results in lasting internal (e.g., cognition, emotions, mental states) and external affective reactions exhibited through job performance, job satisfaction, and organizational commitment.