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Replication Materials for Typecast

Party stereotyping inflames polarization. What fuels party stereotyping? We explore the extent to which a common mental shortcut---the representativeness heuristic---yields biased mental images of the parties. First, we show that people commit the conjunction fallacy---a logical error associated with representativeness bias---at higher rates when evaluating others with party-representative characteristics. Second, when we inform people of the percentage of partisans in groups, the least numerate use this information to infer party composition, consistent with the representativeness heuristic. Finally, we show that people's party stereotypes become more biased when we increase cognitive load, though stereotyping occurs even in relatively "easy" contexts. The epresentativeness heuristic appears to exacerbate party stereotyping, and the way that media informs people about the relationship between social groups and parties may encourage reliance on representativeness. More broadly, reducing stereotyping requires reckoning with our built-in machinery for simplifying theworld around us.

Replication Materials for Typecast

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(Some of the screenshots of the treatments can be found here)

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Manuscript and SI

Authors

Doug Ahler and Gaurav Sood

Suggested Citation

Ahler, Doug, and Gaurav Sood. 2022. Typecast: A Routine Mental Shortcut Causes Party Stereotyping. Political Behavior.

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Replication Materials for Typecast

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