Attitude position and function often are discussed as though they are distinct aspects of attitudes, but scholars have become increasingly interested in how they may interface. We extend existing work showing that people view their positive attitudes as more self-defining than their negative attitudes (i.e., the positivity effect). All datasets support that the positivity effect emerged most strongly among high self-esteem individuals and was attenuated, eliminated, or even reversed among low self-esteem individuals. Furthermore, Study 4 uses a broad array of individual difference measures to triangulate that the higher self-enhancement motivation associated with high self-esteem, rather than merely the positive self-worth of high self-esteem people, is responsible for moderating the positivity effect. In sum, the present work establishes boundary conditions for an important phenomenon in the attitudes literature, develops understanding of the far-ranging implications of trait self-esteem, and illuminates the psychological motivations that connect attitude position and function.
Keywords: attitude functions; attitudes; individual differences; self-enhancement motivation; self-esteem.