When and why do people advocate on behalf of their attitudes? Past research suggests that attitude certainty is one important determinant. The current research seeks to provide more nuanced insight into this relationship by (a) exploring the unique roles of attitude clarity and attitude correctness, and (b) mapping clarity and correctness onto different forms of advocacy (sharing intentions and persuasion intentions). Across four studies, we find that correctness but not clarity plays an important role in promoting persuasion intentions, whereas both correctness and clarity help shape sharing intentions. Thus, this research unpacks the certainty–advocacy relation and helps identify experimental manipulations that uniquely drive persuasion and sharing intentions.
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