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Publications (42)
The World Health Organization (World Health 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 mental health and may help to cope with adverse life circumstances. Par...
Collective action can be a crucial tool for enabling individuals to combat crime in their communities. In this research, we investigated individuals' intentions to mobilize against organized crime, a particularly impactful form of crime characterized by its exercises of power over territories and communities. We focused on individuals' views and pe...
The state’s monopoly on sovereignty can be challenged by criminal systems capable of gaining legitimacy within communities. Understanding the psychological basis of such legitimacy requires broadening traditional conceptualizations of authority to consider how it operates without legal backing and outside formal channels. This research introduces t...
Previous studies on psychological adaptations to pathogen threats revealed the link between pathogen psychology and group behavior, especially in-group-oriented mindsets such as conformity, and the endorsement of group binding moral values. The relationship between behavioral immune responses and in-group attitudes has been mostly discussed in rela...
Norton et al. (2007) demonstrated a counterintuitive phenomenon that knowing other people better and/or having more information about them is associated with decreased liking. They summarized it as - ambiguity leads to liking, whereas familiarity can breed contempt. In a Registered Report with a US Prolific undergraduate student sample (N= 801), we...
According to the theory of bounded generalized reciprocity (BGR), intergroup contexts afford individuals the assumption that indirect reciprocity is bounded by group membership, and this shapes ingroup favouritism in cooperation. The assumption of bounded indirect reciprocity is hypothesized to result in ingroup favouritisms via two pathways: it le...
Social dominance orientation (SDO), the general attitudes towards group-based inequality and dominance, is a key tenet of social dominance theory, and previous studies have found SDO is correlated with a wide range of variables related to intergroup attitudes. In this research, we developed the Japanese version of the short social dominance orienta...
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 the judged appropriateness of sanctions, in a pre-registered analysis of data from a large-scale study in 56 societies. Across the world, we find that individuals who experience an...
The emergence of COVID-19 dramatically changed social behavior across societies and contexts. Here we study whether social norms also changed. Specifically, we study this question for cultural tightness (the degree to which societies generally have strong norms), specific social norms (e.g. stealing, hand washing), and norms about enforcement, usin...
The target article offers a game-theoretical analysis of primitive intergroup aggression (i.e., raiding) and discusses difficulties in achieving peace. We argue the analysis does not capture the actual strategy space, missing out “do-nothing.” Experimental evidence robustly shows people prefer doing nothing against out-group members over cooperatin...
Recidivism costs society, communities, families and individuals. Sport is heralded as an accessible way to engage and incentivise people convicted of crime to change their lifestyles. One high-profile intervention designed to reduce reoffending rates is the Twinning Project, which invites people serving custodial and community sentences to particip...
The majority of people worldwide believe in human-caused climate change. Yet this social consensus is often underestimated, potentially undermining individual climate action. This preregistered study tests (a) whether systematic misperceptions of climate change beliefs generalize across a diverse sample of 11 countries, particularly those countries...
Gossip promotes prosocial behavior via reputational concern. However, the relative effectiveness of positive and negative gossip has been understudied. I examined to what extent positive and negative gossip promoted prosocial behavior when a potential consequence of gossip was positively framed (a third party offering a financial bonus) and negativ...
According to bounded generalized reciprocity (BGR), intergroup contexts afford individuals the assumption that indirect reciprocity is bounded by group membership and this shapes in-group favouritism in cooperation. The assumption of bounded indirect reciprocity is hypothesized to result in in-group favouritisms via two pathways: it leads people to...
How can organizations effectively deliver apologies? Prior research has indicated that apologies accompanied by significant costs are generally perceived as more sincere than those without any associated costs. However, these studies have not explored the impact of minimal financial compensation when the transgressor can only afford a nominal amoun...
Intergroup conflicts lead to devastating consequences and the elucidation of the cause of conflicts has been one of the central and pressing issues among social psychologists. Previous studies found that social dominance orientation is one of the robust correlates of individual differences in the endorsement of intergroup conflicts, such as conserv...
The target article offers a game-theoretical analysis of primitive intergroup aggression (i.e., raiding) and discusses difficulties in achieving peace. We argue the analysis does not capture the actual strategy space, missing out “do-nothing”. Experimental evidence robustly showed people prefer doing nothing against out-group members over cooperati...
Reputational concern shapes various social behaviours, since having a negative reputation often results in receiving negative social consequences such as ostracism and punishment. As such, individuals are motivated to avoid displaying socially disapproved behaviour. Previous studies have found that individuals with power (i.e., those who can asymme...
Social and evolutionary psychologists propose that humans have acquired an evolutionary mechanism that facilitates pathogen avoidance behavior: the behavioral immune system (BIS). Previous studies have revealed that the BIS yields negative attitudes toward out-group members. Given the clear relevance of pathogen-avoidance psychology to individuals’...
This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching...
Gossip plays an essential role in our societies, and individuals gossip about others’ behavior for various reasons. While previous studies have consistently demonstrated that individuals are more willing to gossip about norm deviations, existing research has understudied the potential role of the group membership of gossip target (i.e. a person who...
There is a long-standing debate in philosophy and the social sciences about how selfishness and cooperation function in dyadic social exchanges. Dyads are the foundation of our social lives, and reciprocity has long been considered the dominant strategy for dyadic interactions. We will argue the repertoire of human behavior during social exchanges...
Heyman and Ariely (2004) demonstrated that the expected effectiveness of soliciting help varied depending on the "market", a money market represented by cash rewards versus a social market represented by goods as rewards. They showed that, as cash rewards increase, individuals expected others to be more willing to help, yet, when offering social go...
Heyman and Ariely (2004) demonstrated that the expected effectiveness of soliciting help varied depending on the "market", a money market represented by cash rewards versus a social market represented by goods as rewards. They showed that, as cash rewards increase, individuals expected others to be more willing to help, yet, when offering social go...
Disease-causing parasites and pathogens play a pivotal role in intergroup behavior. Previous studies have suggested that the selection pressure posed by pathogen threat has resulted in in-group assortative sociality, including xenophobia and in-group favoritism. While the current literature has collated numerous studies on the former, strikingly, t...
In-group favouritism is ubiquitous and previous studies have consistently found that individuals cooperate more with in-group members than out-group members in diverse contexts. Yet, there has not been much research on the role of the nature of groups in intergroup cooperation. A recent study found stronger levels of in-group favouritism amongst gr...
Disease-causing parasites and pathogens play a pivotal role in intergroup behavior. Previous studies have suggested that the selection pressure posed by pathogen threat has resulted in in-group assortative sociality, including xenophobia and in-group favoritism. While the current literature has collated numerous studies on the former, strikingly, t...
How can we maximize what is learned from a replication study? In the creative destruction approach to replication, the original hypothesis is compared not only to the null hypothesis, but also to predictions derived from multiple alternative theoretical accounts of the phenomenon. To this end, new populations and measures are included in the design...
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 and across domains. In a preregistered study of 57 countries (using convenience samples of 22,863 students and non-students), we measured perceptions of the appropriatene...
A large-scale field experiment tested psychological interventions to reduce engine idling at long-wait stops. Messages based on theories of normative influence, outcome efficacy, and self-regulation were displayed approaching railway crossing on street poles. Observers coded whether drivers (N = 6,049) turned off their engine while waiting at the r...
In this chapter we discuss the role of groups on behavior in scenarios of moderate alcohol consumption. We outline the role of group monitoring processes in the potential amelioration of the deleterious effects of moderate alcohol levels on group decision making. We discuss the theoretical basis of these findings, the and the different contexts tha...
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 the influence of positive and negative gossip on prosocial behavior, using an economic game. Supporting previous evidence, it was found that individu...
The behavioral immunes system (BIS) is an evolutionary motivational mechanism that facilitates disease-avoidance behavior, and recent studies suggested that the activation of the system would influence various forms of intergroup attitudes. However, existing research tended to focus on attitudinal variables, and the association between the system a...
Individuals sometimes prefer to anonymously donate money when they can publicly do so. In other words, they deliberately hide their costly prosocial behavior from a broad audience. While existing research has collated various evolutionary theories emphasizing the value of public prosocial behavior, it has not endeavored to address the preference fo...