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Social information impairs reward learning in depressive subjects: behavioral and computational characterization

View ORCID ProfileLou Safra, View ORCID ProfileCoralie Chevallier, View ORCID ProfileStefano Palminteri
doi: https://doi.org/10.1101/378281
Lou Safra
1Laboratoire de Neurosciences Cognitives, Institut National de la Santé et de la Recherche Médicale, Paris, France
2Departement d’Études Cognitives, Ecole Normale Supérieure, Paris, France
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  • For correspondence: lou.safra@gmail.fr stefano.palminteri@ens.fr
Coralie Chevallier
1Laboratoire de Neurosciences Cognitives, Institut National de la Santé et de la Recherche Médicale, Paris, France
2Departement d’Études Cognitives, Ecole Normale Supérieure, Paris, France
3Institut d’Études Cognitives, Université de Recherche Paris Sciences et Lettres, Paris, France
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Stefano Palminteri
1Laboratoire de Neurosciences Cognitives, Institut National de la Santé et de la Recherche Médicale, Paris, France
2Departement d’Études Cognitives, Ecole Normale Supérieure, Paris, France
3Institut d’Études Cognitives, Université de Recherche Paris Sciences et Lettres, Paris, France
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  • For correspondence: lou.safra@gmail.fr stefano.palminteri@ens.fr
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Abstract

Depression is characterized by a marked decrease in social interactions and blunted sensitivity to rewards. Surprisingly, despite the importance of social deficits in depression, non-social aspects have been disproportionally investigated. As a consequence, the cognitive mechanisms underlying atypical decision-making in social contexts in depression are poorly understood. In the present study, we investigate whether deficits in reward processing interact with the social context and how this interaction is affected by self-reported depression and anxiety symptoms. Two cohorts of subjects (discovery and replication sample: N = 50 each) took part in a task involving reward learning in a social context with different levels of social information (absent, partial and complete). Behavioral analyses revealed a specific detrimental effect of depressive symptoms – but not anxiety – on behavioral performance in the presence of social information, i.e. when participants were informed about the choices of another player. Model-based analyses further characterized the computational nature of this deficit as a negative audience effect, rather than a deficit in the way others’ choices and rewards are integrated in decision making. To conclude, our results shed light on the cognitive and computational mechanisms underlying the interaction between social cognition, reward learning and decision-making in depressive disorders.

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Posted July 27, 2018.
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Social information impairs reward learning in depressive subjects: behavioral and computational characterization
Lou Safra, Coralie Chevallier, Stefano Palminteri
bioRxiv 378281; doi: https://doi.org/10.1101/378281
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Social information impairs reward learning in depressive subjects: behavioral and computational characterization
Lou Safra, Coralie Chevallier, Stefano Palminteri
bioRxiv 378281; doi: https://doi.org/10.1101/378281

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