Hirotaka Imada

ORCID: 0000-0003-3604-4155
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Research Areas
  • Evolutionary Game Theory and Cooperation
  • Social and Intergroup Psychology
  • Experimental Behavioral Economics Studies
  • Psychology of Moral and Emotional Judgment
  • Evolutionary Psychology and Human Behavior
  • Cultural Differences and Values
  • Behavioral Health and Interventions
  • Culture, Economy, and Development Studies
  • Environmental Education and Sustainability
  • Air Quality and Health Impacts
  • Semantic Web and Ontologies
  • Social Power and Status Dynamics
  • Emotions and Moral Behavior
  • Diverse Aspects of Tourism Research
  • Plant and animal studies
  • Psychology of Social Influence
  • Marriage and Sexual Relationships
  • Deception detection and forensic psychology
  • Crime Patterns and Interventions
  • Economic and Environmental Valuation
  • Ethics in medical practice
  • COVID-19 and Mental Health
  • COVID-19 epidemiological studies
  • Housing Market and Economics
  • Policing Practices and Perceptions

Royal Holloway University of London
2024

Kochi University of Technology
2022-2024

University of Kent
2020-2023

Kimmo Eriksson Pontus Strimling Michele J. Gelfand Junhui Wu Jered Abernathy and 95 more Charity S. Akotia Alisher Aldashev Per Andersson Giulia Andrighetto Adote Anum Gizem Arıkan Zeynep Aycan Fatémeh Baghérian Davide Barrera Dana Basnight-Brown Birzhan Batkeyev Anabel Belaus Elizaveta Berezina Marie Björnstjerna Sheyla Blumen Paweł Boski Fouad Bou Zeineddine И.Б. Бовина Bui Thi Thu Huyen Juan-Camilo Cárdenas Đorđe Čekrlija Hoon-Seok Choi Carlos C. Contreras‐Ibáñez Rui Costa‐Lopes Mícheál de Barra Piyanjali de Zoysa Angela Rachael Dorrough N.V. Dvoryanchikov Anja Eller Jan B. Engelmann Hyun Euh Xia Fang Susann Fiedler Olivia Foster‐Gimbel Márta Fülöp Ragna B. Garðarsdóttir Colin Mathew Hugues D. Gill Andreas Glöckner Sylvie Graf A. K. Grigoryan Vladimir Gritskov Katarzyna Growiec Peter Haľama Andree Hartanto Tim Hopthrow Martina Hřebı́čková Dzintra Iliško Hirotaka Imada Hansika Kapoor Kerry Kawakami Narine Khachatryan Natalia Kharchenko Ninetta Khoury Toko Kiyonari Michal Kohút Lê Thuỳ Linh Lisa M. Leslie Yang Li Norman P. Li Zhuo Li Kadi Liik Angela T. Maitner Bernardo Manhique Harry Manley Imed Medhioub Sari Mentser Linda Mohammed Pegah Nejat Orlando Júlio André Nipassa Ravit Nussinson Nneoma Gift Onyedire Ike E. Onyishi Seniha Özden Penny Panagiotopoulou Lorena R. Perez‐Floriano Minna Persson Mpho M. Pheko Anna‐Maija Pirttilä‐Backman Marianna Pogosyan Jana L. Raver Cecilia Reyna Ricardo Borges Rodrigues Sara Romanò Pedro Romero Inari Sakki Álvaro San Martín Sara Sherbaji Hiroshi Shimizu Brent Simpson Erna Szabo Kosuke Takemura Hassan Tieffi Maria Luísa Mendes Teixeira Napoj Thanomkul Habib Tiliouine

Abstract Norm enforcement may be important for resolving conflicts and promoting cooperation. However, little is known about how preferred responses to norm violations vary across cultures domains. In a preregistered study of 57 countries (using convenience samples 22,863 students non-students), we measured perceptions the appropriateness various violation cooperative atypical social behaviors. Our findings highlight both cultural universals variation. We find universal negative relation...

10.1038/s41467-021-21602-9 article EN cc-by Nature Communications 2021-03-05

The emergence of COVID-19 dramatically changed social behavior across societies and contexts. Here we study whether norms also changed. Specifically, this question for cultural tightness (the degree to which generally have strong norms), specific (e.g. stealing, hand washing), about enforcement, using survey data from 30,431 respondents in 43 countries recorded before the early stages following COVID-19. Using variation disease intensity, shed light on mechanisms predicting changes norm...

10.1038/s41467-024-44999-5 article EN cc-by Nature Communications 2024-02-16

According to the theory of bounded generalized reciprocity (BGR), intergroup contexts afford individuals assumption that indirect is by group membership, and this shapes ingroup favouritism in cooperation. The hypothesized result favouritisms via two pathways: it leads people behave ways earn maintain a positive reputation eyes ingroup, but not outgroup, members (the management hypothesis), expect other be more cooperative than outgroup expectation hypothesis). In words, BGR offers parallel...

10.1177/13684302241239860 article EN cc-by Group Processes & Intergroup Relations 2024-04-12

Abstract The target article offers a game-theoretical analysis of primitive intergroup aggression (i.e., raiding) and discusses difficulties in achieving peace. We argue the does not capture actual strategy space, missing out “do-nothing.” Experimental evidence robustly shows people prefer doing nothing against out-group members over cooperating with/attacking them. Thus, overestimates likelihood aggression.

10.1017/s0140525x23002728 article EN Behavioral and Brain Sciences 2024-01-01
Per Andersson Irina Vartanova Daniel Västfjäll Gustav Tinghög Pontus Strimling and 89 more Junhui Wu Isabela Hazin Charity S. Akotia Alisher Aldashev Giulia Andrighetto Adote Anum Gizem Arıkan Fatémeh Baghérian Davide Barrera Dana Basnight-Brown Birzhan Batkeyev Elizaveta Berezina Marie Björnstjerna Paweł Boski И.Б. Бовина Bui Thi Thu Huyen Đorđe Čekrlija Hoon–Seok Choi Carlos C. Contreras‐Ibáñez Rui Costa‐Lopes Mícheál de Barra Piyanjali de Zoysa Angela Rachael Dorrough N.V. Dvoryanchikov Jan B. Engelmann Hyun Euh Xia Fang Susann Fiedler Olivia Foster‐Gimbel Márta Fülöp Ragna B. Garðarsdóttir Colin Mathew Hugues D. Gill Andreas Glöckner Sylvie Graf A. K. Grigoryan Vladimir Gritskov Katarzyna Growiec Peter Haľama Andree Hartanto Tim Hopthrow Martina Hřebı́čková Dzintra Iliško Hirotaka Imada Hansika Kapoor Kerry Kawakami Narine Khachatryan Наталія Харченко Toko Kiyonari Michal Kohút Lisa M. Leslie Yang Li Norman P. Li Zhuo Li Kadi Liik Angela T. Maitner Bernardo Manhique Harry Manley Imed Medhioub Sari Mentser Pegah Nejat Orlando Júlio André Nipassa Ravit Nussinson Nneoma Gift Onyedire Ike E. Onyishi Penny Panagiotopoulou Lorena R. Perez‐Floriano Minna Persson Anna‐Maija Pirttilä‐Backman Marianna Pogosyan Jana L. Raver Ricardo Borges Rodrigues Sara Romanò Pedro Romero Inari Sakki Álvaro San Martín Sara Sherbaji Hiroshi Shimizu Brent Simpson Erna Szabo Kosuke Takemura Maria Luísa Mendes Teixeira Napoj Thanomkul Habib Tiliouine Giovanni A. Travaglino Yannis Tsirbas Sita Widodo Rizqy Amelia Zein Lina Zirganou-Kazolea Kimmo Eriksson

When someone violates a social norm, others may think that some sanction would be appropriate. We examine how the experience of emotions like anger and disgust relate to judged appropriateness sanctions, in pre-registered analysis data from large-scale study 56 societies. Across world, we find individuals who over norm violation are more likely endorse confrontation, ostracism and, smaller extent, gossip. Moreover, is consistently strongest predictor judgments compared other emotions....

10.1038/s41598-024-55815-x article EN cc-by Scientific Reports 2024-03-07

Gossip, the exchange of information about absent others, is ingrained in system indirect reciprocity, which participating members selectively interact and cooperate with others a good reputation. Previous psychological theorizing suggests that reciprocity perceived to be bounded by group membership. We aimed examine whether group-bounded perspective explains intergroup gossip. thus explored how membership shapes expectations gossip used willingness within across boundaries. conducted three...

10.1016/j.jesp.2024.104657 article EN cc-by Journal of Experimental Social Psychology 2024-06-25

Abstract Previous studies on psychological adaptations to pathogen threats revealed the link between psychology and group behavior, especially in-group-oriented mindsets such as conformity, endorsement of binding moral values. The relationship behavioral immune responses in-group attitudes has been mostly discussed in relation adaptive strategy avoid pathogens. Yet, there is other side system: reactive defense against pathogens (e.g., soliciting social support from others). By operationally...

10.1007/s12144-024-07023-z article EN cc-by Current Psychology 2024-11-27

Abstract The World Health Organization (World Organization, 2020) announced the COVID‐19 outbreak as a pandemic. Globally, this situation affects people in various domains including mental health. Existing theories and research findings suggest justice beliefs are associated with health may help to cope adverse life circumstances. Participants ( N = 3694) 15 Asian nations completed measures of belief just world (BJW), Karma, system justification, well‐being indices impact. results show that...

10.1111/ajsp.12667 article EN Asian Journal Of Social Psychology 2024-12-12

Gossip can promote cooperation via reputational concern.However, the relative effectiveness of positive and negative gossip in fostering prosociality has not been examined.The present study explored influence on prosocial behavior, using an economic game.Supporting previous evidence, it was found that individuals were more when any kind possible, compared to their behavior completely anonymous.However, there no significant difference efficiency promoting between gossip, suggesting is concern...

10.1037/ebs0000218 article EN Evolutionary Behavioral Sciences 2020-08-24

<title xmlns="http://www.ncbi.nlm.nih.gov/JATS1" /> <p xmlns="http://www.ncbi.nlm.nih.gov/JATS1">Reputational concern shapes various social behaviours, since having a negative reputation often results in receiving consequences such as ostracism and punishment. As such, individuals are motivated to avoid displaying socially disapproved behaviour. Previous studies have found that with power (i.e., those who can asymmetrically influence others) tend show behaviours would damage their (e.g.,...

10.32872/spb.7779 article EN cc-by Social Psychological Bulletin 2023-03-03

Abstract Gossip promotes prosocial behavior via reputational concern. However, the relative effectiveness of positive and negative gossip has been understudied. I examined to what extent promoted when a potential consequence was positively framed (a third party offering financial bonus) negatively deducting bonus). found that gossip, irrespective its valence, generosity concern in both contexts. Yet, analyses suggested may have stronger effect promoting prosociality. The findings, together...

10.1111/jpr.12473 article EN Japanese Psychological Research 2023-08-28

In-group favouritism is ubiquitous and previous studies have consistently found that individuals cooperate more with in-group members than out-group in diverse contexts. Yet, there has not been much research on the role of nature groups intergroup cooperation. A recent study stronger levels amongst formed basis shared moral values. However, it remained unclear whether increased was caused by a greater tendency to act favourably towards or derogatorily out-group. The present thus investigated...

10.5178/lebs.2021.86 article EN Letters on Evolutionary Behavioral Science 2021-06-15

Gossip plays an essential role in our societies, and individuals gossip about others' behavior for various reasons. While previous studies have consistently demonstrated that are more willing to norm deviations, existing research has understudied the potential of group membership target (i.e. a person who is gossiped about) recipient (a to) on tendency instigate deviation. We conducted study (N = 1038) which we orthogonally manipulated as well types (normative, negative deviation, positive...

10.1080/23743603.2022.2090327 article EN cc-by Comprehensive Results in Social Psychology 2022-07-04

Individuals sometimes prefer to anonymously donate money when they can publicly do so. In other words, deliberately hide their costly prosocial behavior from a broad audience. While existing research has collated various evolutionary theories emphasizing the value of public behavior, it not endeavored address preference for anonymous giving. The article discussed potential explanations and pointed importance further scholarly discussion about function behavior.

10.5178/lebs.2020.76 article EN Letters on Evolutionary Behavioral Science 2020-06-15

There is a long-standing debate in philosophy and the social sciences about how selfishness cooperation function dyadic exchanges. Dyads are foundation of our lives, reciprocity has long been considered dominant strategy for interactions. We will argue repertoire human behavior during exchanges ranges from punishment to generosity, that nuances relationship interaction dictate which likely occur. examine emotional consequences punishment, reciprocity, forgiveness long-term Finally, we dyads...

10.1155/2022/7259257 article EN cc-by Journal of Theoretical Social Psychology 2022-06-20

Social dominance orientation (SDO), the general attitudes towards group-based inequality and dominance, is a key tenet of social theory, previous studies have found SDO correlated with wide range variables related to intergroup attitudes. In this research, we developed Japanese version short scale (J-SSDO). We collected 632 participants across different regions in Japan investigated factor-structure, internal reliability construct validity J-SSDO. Overall, J-SSDO was low, while it similar...

10.31234/osf.io/8k6yr preprint EN 2024-03-13

Social identity theory posits that individuals perceive the in-group as a homogenous entity comprised of depersonalized individuals, and this has provided foundation to understand intergroup processes for many years. Cross-cultural research suggested social may not apply East Asians, who conceptualize their in-groups differently than those in from Western cultures. Specifically, Yuki colleagues contend Asians networks wherein each individual is connected through personal ties, rather...

10.1016/j.cresp.2024.100200 article EN cc-by Current Research in Ecological and Social Psychology 2024-01-01

Individuals display the tendency to cooperate more with in-group members than they do out-group (i.e. favoritism) across diverse contexts. While previous studies have thoroughly investigated favoritism when a single social category is salient, understudied how individuals others multiple categories are simultaneously salient. To bridge this gap, we conducted study examine cooperation under crossed categorization, in which two dichotomous orthogonally crossed. We then examined psychological...

10.1080/23743603.2024.2388345 article EN cc-by Comprehensive Results in Social Psychology 2024-08-13

10.1038/s44159-024-00371-4 article EN Nature Reviews Psychology 2024-10-07

The state's monopoly on sovereignty can be challenged by criminal systems capable of gaining legitimacy within communities. Understanding the psychological basis such requires broadening traditional conceptualizations authority to consider how it operates without legal backing and outside formal channels. This research introduces Legitimacy Secret Power (L-SP) Scale, a tool measuring individuals' appraisal illegal groups' power. We validated L-SP through three studies (N total = 3,173)....

10.1177/13684302241290935 article EN Group Processes & Intergroup Relations 2024-12-08

Collective action can be a crucial tool for enabling individuals to combat crime in their communities. In this research, we investigated individuals' intentions mobilize against organized crime, particularly impactful form of characterized by its exercises power over territories and We focused on views perceptions state authorities, examining how these may linked collective mobilization. Using large dataset with participants from eight countries (N

10.1111/bjso.12832 article EN cc-by British Journal of Social Psychology 2024-12-11
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