Strong Effort Manipulations Reduce Response Caution: A Preregistered Reinvention of the Ego-Depletion Paradigm.
Psychol Sci
; 31(5): 531-547, 2020 05.
Article
em En
| MEDLINE
| ID: mdl-32315259
ABSTRACT
People feel tired or depleted after exerting mental effort. But even preregistered studies often fail to find effects of exerting effort on behavioral performance in the laboratory or elucidate the underlying psychology. We tested a new paradigm in four preregistered within-subjects studies (N = 686). An initial high-demand task reliably elicited very strong effort phenomenology compared with a low-demand task. Afterward, participants completed a Stroop task. We used drift-diffusion modeling to obtain the boundary (response caution) and drift-rate (information-processing speed) parameters. Bayesian analyses indicated that the high-demand manipulation reduced boundary but not drift rate. Increased effort sensations further predicted reduced boundary. However, our demand manipulation did not affect subsequent inhibition, as assessed with traditional Stroop behavioral measures and additional diffusion-model analyses for conflict tasks. Thus, effort exertion reduced response caution rather than inhibitory control, suggesting that after exerting effort, people disengage and become uninterested in exerting further effort.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Análise e Desempenho de Tarefas
/
Cognição
/
Ego
/
Fadiga
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Autocontrole
Tipo de estudo:
Prognostic_studies
/
Qualitative_research
Limite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Psychol Sci
Assunto da revista:
PSICOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article