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Are patients with schizophrenia rational maximizers? Evidence from an ultimatum game study.
Psychiatry Res. 2011 May 15; 187(1-2):11-7.PR

Abstract

Schizophrenia is associated with impaired social cognition and community functioning. Social decision-making strategies of healthy controls and patients with schizophrenia were compared by using the ultimatum game (UG). In this game two players have to split a sum of money. The proposer offers a portion to the responder, who decides to either accept or reject the offer. Rejection results in no income to either of the parties. Unfair proposals are frequently rejected by nonclinical individuals, a phenomenon described as altruistic punishment. Patients and controls participated in a series of UG interactions as responders in a computerized test setting. We also tested the effect of the proposer's facial expression on decision-making. Our results indicate that patients with schizophrenia accepted unfair offers at a significantly higher rate than did healthy controls. In contrast, at fair proposals, the acceptance rate was lower in patients compared with controls. At higher offers, the proposer's facial expression (positive/negative) significantly influenced the acceptance rate (positive facial expression increased the likelihood of acceptance) in the control group. This effect was not observed in the patient group. These results suggest that schizophrenia patients are impaired in socioeconomic interactions requiring emotion recognition and decision-making, which may result in unstable behavioral strategies.

Authors+Show Affiliations

Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary. csugab@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21035194

Citation

Csukly, Gábor, et al. "Are Patients With Schizophrenia Rational Maximizers? Evidence From an Ultimatum Game Study." Psychiatry Research, vol. 187, no. 1-2, 2011, pp. 11-7.
Csukly G, Polgár P, Tombor L, et al. Are patients with schizophrenia rational maximizers? Evidence from an ultimatum game study. Psychiatry Res. 2011;187(1-2):11-7.
Csukly, G., Polgár, P., Tombor, L., Réthelyi, J., & Kéri, S. (2011). Are patients with schizophrenia rational maximizers? Evidence from an ultimatum game study. Psychiatry Research, 187(1-2), 11-7. https://doi.org/10.1016/j.psychres.2010.10.005
Csukly G, et al. Are Patients With Schizophrenia Rational Maximizers? Evidence From an Ultimatum Game Study. Psychiatry Res. 2011 May 15;187(1-2):11-7. PubMed PMID: 21035194.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Are patients with schizophrenia rational maximizers? Evidence from an ultimatum game study. AU - Csukly,Gábor, AU - Polgár,Patrícia, AU - Tombor,László, AU - Réthelyi,János, AU - Kéri,Szabolcs, Y1 - 2010/10/28/ PY - 2010/01/13/received PY - 2010/08/16/revised PY - 2010/10/04/accepted PY - 2010/11/2/entrez PY - 2010/11/3/pubmed PY - 2011/6/3/medline SP - 11 EP - 7 JF - Psychiatry research JO - Psychiatry Res VL - 187 IS - 1-2 N2 - Schizophrenia is associated with impaired social cognition and community functioning. Social decision-making strategies of healthy controls and patients with schizophrenia were compared by using the ultimatum game (UG). In this game two players have to split a sum of money. The proposer offers a portion to the responder, who decides to either accept or reject the offer. Rejection results in no income to either of the parties. Unfair proposals are frequently rejected by nonclinical individuals, a phenomenon described as altruistic punishment. Patients and controls participated in a series of UG interactions as responders in a computerized test setting. We also tested the effect of the proposer's facial expression on decision-making. Our results indicate that patients with schizophrenia accepted unfair offers at a significantly higher rate than did healthy controls. In contrast, at fair proposals, the acceptance rate was lower in patients compared with controls. At higher offers, the proposer's facial expression (positive/negative) significantly influenced the acceptance rate (positive facial expression increased the likelihood of acceptance) in the control group. This effect was not observed in the patient group. These results suggest that schizophrenia patients are impaired in socioeconomic interactions requiring emotion recognition and decision-making, which may result in unstable behavioral strategies. SN - 0165-1781 UR - https://www.unboundmedicine.com/medline/citation/21035194/Are_patients_with_schizophrenia_rational_maximizers_Evidence_from_an_ultimatum_game_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0165-1781(10)00630-X DB - PRIME DP - Unbound Medicine ER -