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1.
Nat Commun ; 10(1): 4926, 2019 10 29.
Artigo em Inglês | MEDLINE | ID: mdl-31664035

RESUMO

When choosing between options, whether menu items or career paths, we can evaluate how rewarding each one will be, or how congruent it is with our current choice goal (e.g., to point out the best option or the worst one.). Past decision-making research interpreted findings through the former lens, but in these experiments the most rewarding option was always most congruent with the task goal (choosing the best option). It is therefore unclear to what extent expected reward vs. goal congruency can account for choice value findings. To deconfound these two variables, we performed three behavioral studies and an fMRI study in which the task goal varied between identifying the best vs. the worst option. Contrary to prevailing accounts, we find that goal congruency dominates choice behavior and neural activity. We separately identify dissociable signals of expected reward. Our findings call for a reinterpretation of previous research on value-based choice.


Assuntos
Encéfalo/fisiologia , Comportamento de Escolha , Tomada de Decisões , Objetivos , Recompensa , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Neostriado/metabolismo , Oxigênio/sangue , Tempo de Reação , Adulto Jovem
2.
J Exp Psychol Gen ; 147(12): 1892-1904, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29771566

RESUMO

Our most important decisions often provoke the greatest anxiety, whether we seek the better of two prizes or the lesser of two evils. Yet many of our choices are more mundane, such as selecting from a slate of mediocre but acceptable restaurants. Previous research suggests that choices of decreasing value should provoke decreasing anxiety. Here we show that this is not the case. Across three behavioral studies and one fMRI study, we find that anxiety and its neural correlates demonstrate a U-shaped function of choice set value, greatest when choosing between both the highest value and lowest value sets. Intermediate (moderate-value) choice sets provoke the least anxiety, even when they are just as difficult to select between as the choice sets at the two extremes. We show that these counterintuitive findings are accounted for by decision makers perceiving low-value items as aversive (i.e., negatively motivationally salient) rather than simply unrewarding. Importantly, though, neural signatures of these anxious reactions only appear when participants are required to choose one item from a set and not when simply appraising that set's overall value. Decision makers thus experience anxiety from competing avoidance motivations when forced to select among low-value options, comparable to the competing approach motivations they experience when choosing between high-value items. We further show that a common method of measuring subjective values (willingness to pay) can inadvertently censor a portion of this quadratic pattern, creating the misperception that anxiety simply increases linearly with set value. Collectively, these findings reveal the surprising costs of seemingly banal decisions. (PsycINFO Database Record (c) 2018 APA, all rights reserved).


Assuntos
Ansiedade/psicologia , Encéfalo/diagnóstico por imagem , Comportamento de Escolha/fisiologia , Emoções/fisiologia , Adolescente , Ansiedade/diagnóstico por imagem , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Motivação/fisiologia , Adulto Jovem
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