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Similarity and Comparison Complexity

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  • Cassidy Shubatt
  • Jeffrey Yang

Abstract

Some choice options are more difficult to compare than others. This paper develops a theory of what makes a comparison complex, and how comparison complexity generates systematic mistakes in choice. In our model, options are easier to compare when they 1) share similar features, holding fixed their value difference, and 2) are closer to dominance. We show how these two postulates yield tractable measures of comparison complexity in the domains of multiattribute, lottery, and intertemporal choice. Using experimental data on binary choices, we demonstrate that our complexity measures predict choice errors, choice inconsistency, and cognitive uncertainty across all three domains. We then show how canonical anomalies in choice and valuation, such as context effects, preference reversals, and apparent probability weighting and present bias in the valuation of risky and intertemporal prospects, can be understood as responses to comparison complexity.

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  • Cassidy Shubatt & Jeffrey Yang, 2024. "Similarity and Comparison Complexity," Papers 2401.17578, arXiv.org.
    • Handle: RePEc:arx:papers:2401.17578
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    File URL: http://arxiv.org/pdf/2401.17578
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    References listed on IDEAS

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