Do causal attributions serve the need to protect and / or enhance self-esteem? In a recent review. Miller and Ross (1975) proposed that there is evidence for self-serving effect in the attribution of success but not in the attribution of failure; and that this effect reflects biases in information-processing rather than self-esteem maintenance. The present review indicated that self-serving effects for both success and failure are obtained in most but not all experimental paradigms. Processes which may suppress or even reverse the self-serving effect were discussed. Most important, the examination of research in which selfserving effects are obtained suggested that these attributions are better understood in motivational than in information-processing terms.According to Heider's (1958) "naive analysis of action" model, attributions of causality are influenced by subjective needs and wishes as well as by the more objective evidence. The literature on attribution of success and failiu-e (e.g., Bradley, 1978; Hastorf, Schneider, & Polefka, 1970;Snyder, Stephan, & Rosenfield, 1978) labelled the effects of needs and wishes on attribution as defensive, egocentric, egotistic, or self-serving. Specifically, it was suggested that people attempt to enhance or protect their selfesteem by taking credit for success and denying responsibility for failure. The notion that internal attribution of success and external attribution of failure are self-serving was supported by NichoUs (1975) and Riemer (1975) who showed that such attributions are related to more positive affective states.