Acute stress alters individual risk taking in a time-dependent manner and leads to anti-social risk.
Decision-making processes can be modulated by stress, and the time elapsed from stress induction seems to be a crucial factor in determining the direction of the effects. Although current approaches consider the first post-stress hour a uniform period, the dynamic pattern of activation of the physiological stress systems (i.e., the sympathetic nervous system and hypothalamic-pituitary-adrenal axis) suggests that its neurobehavioural impact might be heterogeneous. Here, we evaluate economic risk preferences on the gain domain (i.e., risk aversion) at three time points following exposure to psychosocial stress (immediately after, and 20 and 45 min from onset). Using lottery games, we examine decisions at both the individual and social levels. We find that risk aversion shows a time-dependent change across the first post-stress hour, evolving from less risk aversion shortly after stress to more risk averse behaviour at the last testing time. When risk implied an antisocial outcome to a third party, stressed individuals showed less regard for this person in their decisions. Participants' cortisol levels explained their behaviour in the risk, but not the antisocial, game. Our findings reveal differential stress effects in self- and other-regarding decision-making and highlight the multidimensional nature of the immediate aftermath of stress for cognition.
Laboratory of Behavioral Genetics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.|Department of Economics, Faculty of Business and Economics, University of Lausanne (UNIL), CH-1015, Lausanne, Switzerland.
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S
Bendahan
Department of Economics, Faculty of Business and Economics, University of Lausanne (UNIL), CH-1015, Lausanne, Switzerland.
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L
Goette
Laboratory of Behavioral Genetics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
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J
Thoresen
Laboratory of Behavioral Genetics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
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L
Loued-Khenissi
Laboratory of Behavioral Genetics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
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0000-0001-6559-5736
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Hollis
Laboratory of Behavioral Genetics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
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C
Sandi
D003657:Decision Making; D005260:Female; D005717:Games, Experimental; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D011930:Reaction Time; D012201:Reward; D012309:Risk-Taking; D012919:Social Behavior; D013315:Stress, Psychological / Q000097:blood / Q000503:physiopathology*; D055815:Young Adult
D006854:Hydrocortisone
behavioural economics; behavioural neuroscience; decision-making; resilience; stress