BJPsych Open. 2016 Mar 24;2(2):163-169. doi: 10.1192/bjpo.bp.115.001362. eCollection 2016 Mar.
Testing the social competition hypothesis of depression using a simple economic game.
BJPsych open
Aleksandra Kupferberg, Oliver M Hager, Urs Fischbacher, Laura S Brändle, Melanie Haynes, Gregor Hasler
Affiliations
Affiliations
- , PhD, Psychiatric University Hospital, Division of Molecular Psychiatry, University of Bern, Bern, Switzerland.
- , MSc, Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital; Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Zurich, Switzerland.
- , Prof. Dr, Department of Economics, Economics University, Konstanz, Germany; Thurgau Institute of Economics, Kreuzlingen, Switzerland.
- , MSc.
- , DiplBiol.
- , MD, Prof., Psychiatric University Hospital, Division of Molecular Psychiatry, University of Bern, Bern, Switzerland.
PMID: 27703769
PMCID: PMC4995574 DOI: 10.1192/bjpo.bp.115.001362
Abstract
BACKGROUND: Price's social competition hypothesis interprets the depressive state as an unconscious, involuntary losing strategy, which enables individuals to yield and accept defeat in competitive situations.
AIMS: We investigated whether patients who suffer from major depressive disorder (MDD) would avoid competition more often than either patients suffering from borderline personality disorder (BPD) or healthy controls.
METHOD: In a simple paper-folding task healthy participants and patiens with MDD and BPD were matched with two opponents, one with an unknown diagnosis and one who shared their clinical diagnosis, and they had to choose either a competitive or cooperative payment scheme for task completion.
RESULTS: When playing against an unknown opponent, but not the opponent with the same diagnosis, the patients with depression chose the competitive payment scheme statistically less often than healthy controls and patients diagnosed with BPD.
CONCLUSION: The competition avoidance against the unknown opponent is consistent with Price's social competition hypothesis.
DECLARATION OF INTEREST: G.H. received research support, consulting fees and speaker honoraria from Lundbeck, AstraZeneca, Servier, Eli Lilly, Roche and Novartis.
COPYRIGHT AND USAGE: © The Royal College of Psychiatrists 2016. This is an open access article distributed under the terms of the Creative Commons Non-Commercial, No Derivatives (CC BY-NC-ND) licence.
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