• Pain · Feb 2022

    The exploration-exploitation dilemma in pain: an experimental investigation.

    • Angelos-Miltiadis Krypotos, Geert Crombez, Maryna Alves, Nathalie Claes, and VlaeyenJohan W SJWS0000-0003-0437-6665Research Group Health Psychology, KU Leuven, Leuven, Belgium.Experimental Health Psychology, Maastricht University, Maastricht, the Netherlands..
    • Research Group Health Psychology, KU Leuven, Leuven, Belgium.
    • Pain. 2022 Feb 1; 163 (2): e215e233e215-e233.

    AbstractDaily life consists of a chain of decisions. Typically, individuals may choose to pursue what they already know (exploitation) or to search for other options (exploration). This exploration-exploitation dilemma is a topic of interest across multiple scientific fields. Here we propose that investigating how individuals solve this dilemma may improve our understanding of how individuals make behavioral decisions (eg, avoidance) when facing pain. To this end, we present the data of 3 experiments in which healthy individuals were given the opportunity to choose between 4 different movements, with each movement being associated with different probabilities of receiving a painful outcome only (experiment 1) or pain and/or a reward (experiment 2). We also investigated whether participants stuck to their decisions when the contingencies between each movement and the painful/rewarding outcome changed during the task (experiment 3). The key findings across all experiments are the following: First, after initial exploration, participants most often exploited the safest option. Second, participants weighted rewards more heavily than receiving pain. Finally, after receiving a painful outcome, participants were more inclined to explore than to exploit a rewarding movement. We argue that by focusing more on how individuals in pain solve the exploration-exploitation dilemma is helpful in understanding behavioral decision making in pain.Copyright © 2021 International Association for the Study of Pain.

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