Title |
Loss Aversion Reflects Information Accumulation, Not Bias: A Drift-Diffusion Model Study
|
---|---|
Published in |
Frontiers in Psychology, October 2017
|
DOI | 10.3389/fpsyg.2017.01708 |
Pubmed ID | |
Authors |
Summer N. Clay, John A. Clithero, Alison M. Harris, Catherine L. Reed |
Abstract |
Defined as increased sensitivity to losses, loss aversion is often conceptualized as a cognitive bias. However, findings that loss aversion has an attentional or emotional regulation component suggest that it may instead reflect differences in information processing. To distinguish these alternatives, we applied the drift-diffusion model (DDM) to choice and response time (RT) data in a card gambling task with unknown risk distributions. Loss aversion was measured separately for each participant. Dividing the participants into terciles based on loss aversion estimates, we found that the most loss-averse group showed a significantly lower drift rate than the other two groups, indicating overall slower uptake of information. In contrast, neither the starting bias nor the threshold separation (barrier) varied by group, suggesting that decision thresholds are not affected by loss aversion. These results shed new light on the cognitive mechanisms underlying loss aversion, consistent with an account based on information accumulation. |
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