Assessed the impact of outcome (success vs failure) and attribution (internal vs external) on affect in an achievement setting. Following the theorizing of B. Weiner et al (1978, 1979), it was anticipated that the outcome manipulation would determine general positive and negative affective reactions, whereas the attribution manipulation would influence affects related to self-esteem. 53 female undergraduates received success or failure feedback on a social accuracy test and were induced to attribute their performance to either an internal (ability) or an external cause (characteristics of the task). A factor analysis revealed 3 dimensions: Negative Affect, Positive Affect, and Self-Esteem. ANOVA indicated that the nature of the attribution influenced all 3 forms of affective reactions. Success produced greater positive affect, less negative affect, and higher self-esteem than failure only when ability attributions were induced. Although additional analyses offered some support for the presence of affects influenced solely by outcome, the majority of analyses supported the notion that attributions are the primary determinants of affective reactions to success and failure.(24 ref)(PsycINFO Database Record (c) 2016 APA, all rights reserved)