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This study examines why environmental policymaking often diverges from fact-based reasoning, drawing on insights from behavioral political economy. Concepts such as rational irrationality, expressive political behavior, and availability cascades explain why voters and policymakers systematically adopt biased beliefs and fail to update these beliefs in an unbiased way. Two cases are analyzed: Germany’s nuclear exit and contemporary calls for degrowth. Both illustrate how heuristics, biases, and expressive motives shape public opinion and policy outcomes, often at the expense of efficiency.

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Behavioral Political Economy and Environmental Policy: Explaining Persistent Deviations from Efficient Policies

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  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Jan Schnellenbach

摘要

This study examines why environmental policymaking often diverges from fact-based reasoning, drawing on insights from behavioral political economy. Concepts such as rational irrationality, expressive political behavior, and availability cascades explain why voters and policymakers systematically adopt biased beliefs and fail to update these beliefs in an unbiased way. Two cases are analyzed: Germany’s nuclear exit and contemporary calls for degrowth. Both illustrate how heuristics, biases, and expressive motives shape public opinion and policy outcomes, often at the expense of efficiency.