journal article May 08, 2020

Economic Rationality under Cognitive Load

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Abstract
AbstractEconomic analysis assumes that consumer behaviour can be rationalised by a utility function. Previous research has shown that some consistency of choices with economic rationality can be captured by permanent cognitive ability. No other known study however has examined how a temporary load in subjects’ working memory can affect economic rationality. Using two controlled laboratory experiments, we exogenously vary cognitive load by asking subjects to memorise a number while they undertake an induced budget allocation task (Choi et al., 2007a, b). Using a number of manipulation checks, we verify that cognitive load has adverse effects on subjects’ performance in reasoning tasks. However, we find no effect in any of the goodness-of-fit measures that measure consistency of subjects’ choices with the Generalized Axiom of Revealed Preference (GARP), despite having a sample size large enough to detect even small differences between treatments with 80% power. We also find no effect on first-order stochastic dominance and risk preferences. Our finding suggests that economic rationality can be attained even when subjects are placed under temporary working memory load, despite the fact that the load has adverse effects in reasoning tasks.
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Details
Published
May 08, 2020
Vol/Issue
130(632)
Pages
2382-2409
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Cite This Article
Andreas C Drichoutis, Rodolfo M Nayga (2020). Economic Rationality under Cognitive Load. The Economic Journal, 130(632), 2382-2409. https://doi.org/10.1093/ej/ueaa052
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