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Qian C, Tei S, Itahashi T, Aoki YY, Ohta H, Hashimoto RI, Nakamura M, Takahashi H, Kato N, Fujino J. Intergroup bias in punishing behaviors of adults with autism spectrum disorder. Front Psychiatry 2022; 13:884529. [PMID: 36061271 PMCID: PMC9437315 DOI: 10.3389/fpsyt.2022.884529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
Groups are essential elements of society, and humans, by nature, commonly manifest intergroup bias (i.e., behave more positively toward an ingroup member than toward an outgroup member). Despite the growing evidence of various types of altered decision-making in individuals with autism spectrum disorder (ASD), their behavior under the situation involving group membership remains largely unexplored. By modifying a third-party punishment paradigm, we investigated intergroup bias in individuals with ASD and typical development (TD). In our experiment, participants who were considered as the third party observed a dictator game wherein proposers could decide how to distribute a provided amount of money while receivers could only accept unconditionally. Participants were confronted with two different group situations: the proposer was an ingroup member and the recipient was an outgroup member (IN/OUT condition) or the proposer was an outgroup member and the recipient was an ingroup member (OUT/IN condition). Participants with TD punished proposers more severely when violating social norms in the OUT/IN condition than in IN/OUT condition, indicating that their decisions were influenced by the intergroup context. This intergroup bias was attenuated in individuals with ASD. Our findings deepen the understanding of altered decision-making and socioeconomic behaviors in individuals with ASD.
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Affiliation(s)
- Chenyu Qian
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shisei Tei
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Institute of Applied Brain Sciences, Waseda University, Saitama, Japan.,School of Human and Social Sciences, Tokyo International University, Saitama, Japan
| | - Takashi Itahashi
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan
| | - Yuta Y Aoki
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan
| | - Haruhisa Ohta
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Department of Psychiatry, School of Medicine, Showa University, Tokyo, Japan
| | - Ryu-Ichiro Hashimoto
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Department of Language Sciences, Graduate School of Humanities, Tokyo Metropolitan University, Tokyo, Japan
| | - Motoaki Nakamura
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Kanagawa Psychiatric Center, Kanagawa, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Nobumasa Kato
- Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan
| | - Junya Fujino
- Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Medical Institute of Developmental Disabilities Research, Showa University, Tokyo, Japan.,Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Arunachalam Chandran V, Pliatsikas C, Neufeld J, O'Connell G, Haffey A, DeLuca V, Chakrabarti B. Brain structural correlates of autistic traits across the diagnostic divide: A grey matter and white matter microstructure study. Neuroimage Clin 2021; 32:102897. [PMID: 34911200 PMCID: PMC8641248 DOI: 10.1016/j.nicl.2021.102897] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 10/25/2021] [Accepted: 11/22/2021] [Indexed: 12/02/2022]
Abstract
Autism Spectrum Disorders (ASD) are a set of neurodevelopmental conditions characterised by difficulties in social interaction and communication as well as stereotyped and restricted patterns of interest. Autistic traits exist in a continuum across the general population, whilst the extreme end of this distribution is diagnosed as clinical ASD. While many studies have investigated brain structure in autism using a case-control design, few have used a dimensional approach. To add to this growing body of literature, we investigated the structural brain correlates of autistic traits in a mixed sample of adult participants (25 ASD and 66 neurotypicals; age: 18-60 years). We examined the relationship between regional brain volumes (using voxel-based morphometry and surface-based morphometry) and white matter microstructure properties (using Diffusion Tensor Imaging) and autistic traits (using Autism Spectrum Quotient). Our findings show grey matter differences in regions including the orbitofrontal cortex and lingual gyrus, and suggestive evidence for white matter microstructure differences in tracts including the superior longitudinal fasciculus being related to higher autistic traits. These grey matter and white matter microstructure findings from our study are consistent with previous reports and support the brain structural differences in ASD. These findings provide further support for shared aetiology for autistic traits across the diagnostic divide.
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Affiliation(s)
- Varun Arunachalam Chandran
- Centre for Autism, School of Psychology and Clinical Language Sciences (SPCLS), University of Reading, UK; Center for Mind and Brain, University of California Davis, Davis, CA, USA.
| | - Christos Pliatsikas
- School of Psychology and Clinical Language Sciences, University of Reading, Harry Pitt Building, Earley Gate, Whiteknights Road, Reading RG6 6AL, UK; Centro de Ciencia Cognitiva, Facultad de Lenguas y Educación, Universidad Antonio de Nebrija, Calle de Sta. Cruz de Marcenado, 27, 28015 Madrid, Spain
| | - Janina Neufeld
- Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
| | | | - Anthony Haffey
- Centre for Autism, School of Psychology and Clinical Language Sciences (SPCLS), University of Reading, UK
| | - Vincent DeLuca
- Department of Language and Culture, UiT- The Arctic University of Norway, Hansine Hansens veg 18, 9019 Tromsø, Norway
| | - Bhismadev Chakrabarti
- Centre for Autism, School of Psychology and Clinical Language Sciences (SPCLS), University of Reading, UK; Department of Psychology, Ashoka University, Sonipat, India; India Autism Center, Kolkata, India
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