Cognitive systems for revenge and forgiveness

Relations among Memories of Parental Acceptance-Rejection, Psychological (Mal)Adjustment, Forgiveness, and Vengeance among Iranian Adults

The study investigated relations among adults' memories of parental acceptance-rejection in childhood and adults' current dispositions toward forgiveness and vengeance, as mediated by psychological (mal)adjustment. Data were collected from 258 adults (female = 183, Age range = 17-47 years; Mage = 39; SD = 11.4). Measures used were the short forms of the maternal and paternal Adult Parental Acceptance-Rejection Questionnaires (PARQ), the short form of the Adult Personality Assessment Questionnaire (PAQ), the Heartland Forgiveness Scale (HFS), the Vengeance Scale (VS-10), and a Personal Information Form (PIF). Results showed that maternal and paternal rejection was positively associated with psychological maladjustment and negatively correlated with forgiveness for both men and women. Moreover, psychological maladjustment showed a negative relation with forgiveness and a positive relation with vengeance. Findings revealed that parental (maternal and paternal) rejection was not significantly associated with vengeance for men. However, maternal (not paternal) rejection was significantly associated with a vengeance for women. Path analysis revealed a significant indirect effect of maternal and paternal rejection on forgiveness and vengeance through psychological maladjustment. Results found no significant gender differences in the path analyses. Findings are discussed considering the Iranian culture and religious beliefs. Implications of the results and future research directions are discussed.

Unraveling the Complex Interactions of Psychological Factors Contributing to Cyber Reactive Aggression Among College Students: Network and Mediation Analyses

Cyber reactive aggression (CRA) among college students is a prevalent and harmful phenomenon. Psychological characteristics, such as trait anger (TA), hostile attribution bias (HAB), and revenge motivation (RM), are known to contribute to reactive aggression. However, the interactions between these factors in the context of cyberspace and their contribution to CRA among college students have not been extensively studied. This cross-sectional study aimed to identify the associations among psychological characteristics, demographic factors, and CRA among Chinese college students through Mixed Graphical Model (MGM) network and mediation effect analyses. A total of 926 participants completed questionnaires assessing TA, HAB, RM, and CRA. The study found both direct and indirect relationships between TA and CRA, with HAB and RM serving as mediating factors. Comparisons indicated that HAB had a more significant impact on the three indirect effects than RM. Furthermore, gender was found to be associated with TA and CRA, while the left-behind experience strongly influenced HAB but had no association with other variables. This study highlights the importance of considering psychological characteristics and demographic factors in understanding CRA among college students, suggesting that effective psychological interventions, such as anger management, and promoting positive attribution training, may help reduce CRA among college students and inform the development of targeted interventions to reduce cyber aggression.

Severity and deservedness determine signalled trustworthiness in third party punishment

Studies on third-party punishment (TPP) have shown it promotes cooperation and prosocial behaviour, albeit at a cost to the punisher. Contrary to the view that such punishment is entirely altruistic, recent research suggests that punishers gain reputational benefits from third-party punishing in the form of increased trustworthiness. Nevertheless, both how the signal is determined and the honesty of the signalling function of TPP have not been fully examined. Here we present the results of four experiments (n = 1695, prolific.co) in which we examined how TPP signalling varies as a function of its deservedness and severity. Experiments 1A and 1B use incentivized economic game paradigms to show how deservedness, impacts the trustworthiness signalled by the punisher. Experiment 2A expands on traditional dichotomous punishment decisions to show how signalled trustworthiness depends on different levels of TPP severity. Experiment 2B isolates the signalling effectiveness of severity by decoupling it from the corresponding incurred cost to punish and examines its impact on signalled trustworthiness. Overall, we found that punishment signalling is sensitive to deservedness and severity but not independent of other factors such as the cost to punish.

The association between victims' vulnerable and grandiose narcissism and grudge holding

Two nonexperimental studies were conducted to test how and why transgression victims' narcissism influences their grudge holding, using undergraduate students and a community sample of adults, respectively. Study 1 tested the association between victims' vulnerable narcissism and grudge holding, including emotional persistence, perceived longevity, and disdain toward the transgressor. It also tested the extent to which victims' grandiose narcissism moderated the association. Study 2 was conducted to replicate Study 1 and test whether victims' rumination about the transgression mediated the moderated association. Overall, those with higher degrees of grandiosity showed a positive relation between vulnerable narcissism and reported emotional persistence (Studies 1 and 2) and perceived longevity (Study 2). Finally, rumination explained the moderated relation (Study 2).

Unforgiveness in the Light of Sexual Infidelity: Anxious Attachment to the Partner and Personal Distress as Correlates

It has been widely documented that infidelity is established as one of the main causes of relationship breakdowns. Likewise, the empirical literature has also revealed the association between anxious attachment and personal distress with unforgiveness motivations. However, there is no known research that has examined the role of anxious attachment to the partner, personal distress, and unforgiveness motivations in infidelity and even less, taking into account the perspective of the offended person. Through a correlational study (N = 304 Spanish participants from the general population [M = 26.25, SD = 9.62]), we examined the relationship between unforgiveness motivations (revenge and avoidance motivations for unforgiveness), anxious attachment to the partner, and personal distress experienced after a hypothetical sexual infidelity from the perspective of the offended person. The results showed that anxious attachment was positively associated with revenge motivation for unforgiveness and personal distress. Moreover, high levels of anxious attachment to the partner were only associated with higher avoidance motivation for unforgiveness through increased levels of personal distress. Last but not least, we discuss these findings and their possible repercussions for intimate relationships.

Moral emotions underlie puritanical morality

Fitouchi et al. illustrate the cognitive and evolutionary foundations of puritanical morality, while leave the emotional foundation unclear. We complement their theory by proposing moral emotions (e.g., guilt and shame) as characteristic emotions underlying puritanical morality. Our proposition is based on the findings that these moral emotions emerge after violations of puritanical norms and promote self-control and cooperation.

Political repression motivates anti-government violence

We examined whether political repression deters citizens from engaging in anti-government behaviour (its intended goal) or in fact motivates it. Analyses of 101 nationally representative samples from three continents (N = 139 266) revealed a positive association between perceived levels of repression and intentions to engage in anti-government violence. Additional analyses of fine-grained data from three countries characterized by widespread repression and anti-government violence (N = 2960) identified a positive association between personal experience with repression and intentions to engage in anti-government violence. Randomized experiments revealed that thoughts about repression also motivate participation in anti-government violence. These results suggest that political repression, aside from being normatively abhorrent, motivates anti-repressor violence.

Coalitionality shapes moral elevation: evidence from the U.S. Black Lives Matter protest and counter-protest movements

Witnessing altruistic behaviour can elicit moral elevation, an emotion that motivates prosocial cooperation. This emotion is evoked more strongly when the observer anticipates that other people will be reciprocally cooperative. Coalitionality should therefore moderate feelings of elevation, as whether the observer shares the coalitional affiliation of those observed should influence the observer's assessment of the likelihood that the latter will cooperate with the observer. We examined this thesis in studies contemporaneous with the 2020 Black Lives Matter (BLM) protests. Although BLM protests were predominantly peaceful, they were depicted by conservative media as destructive and antisocial. In two large-scale, pre-registered online studies (total N = 2172), political orientation strongly moderated feelings of state elevation elicited by a video of a peaceful BLM protest (Studies 1 and 2) or a peaceful Back the Blue (BtB) counter-protest (Study 2). Political conservatism predicted less elevation following the BLM video and more elevation following the BtB video. Elevation elicited by the BLM video correlated with preferences to defund police, whereas elevation elicited by the BtB video correlated with preferences to increase police funding. These findings extend prior work on elevation into the area of prosocial cooperation in the context of coalitional conflict.

Bright side of the MAOA-uVNTR on trait and situational forgiveness

The stress-and-coping theory of forgiveness posits that forgiveness and aggression are alternative ways of coping with stress of interpersonal offences. Inspired by the link between aggression and MAOA-uVNTR (a genetic variant involving in catabolism of monoamines), we investigated the relationship between this variant and forgiveness with two studies. Study 1 examined the relationship between the MAOA-uVNTR and trait forgiveness in students, and study 2 examined the effect of this variant on third-party forgiveness in response to situational offences in male inmates. The results showed that the MAOA-H (a high activity allele) was associated with higher trait forgiveness in male students and greater third-party forgiveness to accidentally committed harm and attempted but failed harm in male inmates than the MAOA-L. These findings highlight the bright side of MAOA-uVNTR on trait and situational forgiveness.

Not revenge, but change is sweet: Experimental evidence of how offender change and punishment play independent roles in victims' sense of justice

What positive effects do victims gain by punishing their offenders? Previous research suggests that punishment increases victims' justice-related satisfaction only when the offender indicates that they changed their moral attitude and behaviour. However, offender change may increase justice-related satisfaction independently of punishment. So far, it is empirically unclear whether punishment affects satisfaction beyond offender change (e.g. by producing the change), and whether punishment has positive effects on victims that are independent of offender change, specifically how it empowers victims. In two studies, we use a full experimental design to test the unique influence of punishment and offender change on victims' justice-related satisfaction and empowerment. In a third study, we extend the design and additionally test for the effects of assigned versus self-selected punishment. Across three studies (N = 824) with different methodological approaches, we consistently found that offender change alone increased victims' justice-related satisfaction-and this effect was not moderated by punishment. Study 2, but not Study 3, showed that punishment alone empowered victim-and this effect was not moderated by offender change. This indicates that offender change and punishment have independent roles in producing positive effects on victims. Overall, it was offender change and not punishment that made victims feel that justice has been done.

Why Warmth Matters More Than Competence: A New Evolutionary Approach

Multiple lines of evidence suggest that there are two major dimensions of social perception, often called warmth and competence, and that warmth is prioritized over competence in multiple types of social decision-making. Existing explanations for this prioritization argue that warmth is more consequential for an observer's welfare than is competence. We present a new explanation for the prioritization of warmth based on humans' evolutionary history of cooperative partner choice. We argue that the prioritization of warmth evolved because ancestral humans faced greater variance in the warmth of potential cooperative partners than in their competence but greater variance in competence over time within cooperative relationships. These each made warmth more predictive than competence of the future benefits of a relationship, but because of differences in the distributions of these traits, not because of differences in their intrinsic consequentiality. A broad, synthetic review of the anthropological literature suggests that these conditions were characteristic of the ecologies in which human social cognition evolved, and agent-based models demonstrate the plausibility of these selection pressures. We conclude with future directions for the study of preferences and the further integration of social and evolutionary psychology.

Key individuals catalyse intergroup violence

Intergroup violence is challenging to understand: why do individuals cooperate to harm members of other groups when they themselves may be killed or injured? Despite progress in understanding the evolutionary and proximate mechanisms that underlie violence, we still have little insight into the processes that lead to the emergence of coalitionary aggression. We argue that an overlooked component is the presence of individuals who have a crucial role in initiating violence. In instigating intergroup violence, these key individuals may expect to face lower costs, receive greater benefits, or garner benefits that have a greater value to them than others. Alternatively, key individuals may be motivated by individual traits such as increased boldness, propensity for aggression or exploratory behaviour. Key individuals catalyse the emergence of coalitionary violence through one of several processes including altering the costs and benefits that accrue to others, paying a greater share of the startup costs, signalling privileged knowledge, or providing coordination, among other factors. Here we integrate diverse lines of empirical research from humans and non-human animals demonstrating that inter-individual variation is an important factor in the emergence of intergroup violence. Focusing on the role of key individuals provides new insights into how and why violence emerges. This article is part of the theme issue 'Intergroup conflict across taxa'.

Evidence for third-party mediation but not punishment in Mentawai justice

Researchers argue that third parties help sustain human cooperation, yet how they contribute remains unclear, especially in small-scale, politically decentralized societies. Studying justice among Mentawai horticulturalists in Indonesia, we examined evidence for punishment and mediation by third parties. Across a sample of 444 transgressions, we find no evidence of direct third-party punishment. Most victims and aggrieved parties demanded payment, and if a transgressor faced punishment, this was never imposed by third parties. We find little evidence of indirect sanctions by third parties. Nearly 20% of transgressions were followed by no payment, and as predicted by dyadic models of sanctions, payments were less likely when transgressions were among related individuals. Approximately 75% of non-governmental mediators called were third parties, especially shamans and elders, and mediators were called more as cooperation was threatened. Our findings suggest that, among the Mentawai, institutionalized penalties function more to restore dyadic cooperation than to enforce norms.

Unpleasant Memories on the Web in Employment Relations: A Ricoeurian Approach

Cybervetting has become common practice in personnel decision-making processes of organizations. While it represents a quick and inexpensive way of obtaining additional information on employees and applicants, it gives rise to a variety of legal and ethical concerns. To limit companies’ access to personal information, a right to be forgotten has been introduced by the European jurisprudence. By discussing the notion of forgetting from the perspective of French hermeneutic philosopher Paul Ricoeur, the present article demonstrates that both, companies and employees, would be harmed if access to online information on applicants and current employees would be denied. Consistent with a Humanistic Management approach that promotes human dignity and flourishing in the workplace, this article proposes guidance for the responsible handling of unpleasant online memories in personnel decision-making processes, thereby following Ricoeur’s notion of forgetting as “kept in reserve”. Enabling applicants and employees to take a qualified stand on their past is more beneficial to both sides than a right to be forgotten that is questionable in several respects.

Responses to Offense at Work and the Impact of Hierarchical Status: The Fault of the Leader, Causal Attributions, and Social Support During the Covid-19 Pandemic Crisis

The study explores the mechanism by which unadapted causal attributions and the perception of social support stimulate revenge and reconciliation at the social and professional level in the context of the current pandemic. In particular, the purpose of the study is to investigate the relationship between the accused, the victim and offender status and the search for revenge or reconciliation following a personal offense. To test the suggested research model, we analyzed the data collected by 167 (m = 28.52; SD = 8.98) employees in different organizations using a multifactorial experimental design. The results support the influence of attributional predictions in forming revenge and reconciliation and show that they are involved in the decision to carry out revenge, but especially in the way the employee interprets the trigger situation. In conclusion, the revenge is based on a negative attributional mechanism that produces the greatest deficit of adaptation to the situation and a weakening of the perception of social support, while reconciliation seems to be based on a much more complex socio-occupational mechanism. Leaders should pay attention to organizational communication during a crisis as they could encourage hopelessness depression. Adjusting crisis communication is crucial to ensuring job satisfaction that could mitigate negative effects.

Honesty and dishonesty in gossip strategies: a fitness interdependence analysis

Gossip, or sharing information about absent others, has been identified as an effective solution to free rider problems in situations with conflicting interests. Yet, the information transmitted via gossip can be biased, because gossipers may send dishonest information about others for personal gains. Such dishonest gossip makes reputation-based cooperation more difficult to evolve. But when are people likely to share honest or dishonest gossip? We build formal models to provide the theoretical foundation for individuals' gossip strategies, taking into account the gossiper's fitness interdependence with the receiver and the target. Our models across four different games suggest a very simple rule: when there is a perfect match (mismatch) between fitness interdependence and the effect of honest gossip, the gossiper should always be honest (dishonest); however, in the case of a partial match, the gossiper should make a choice based on their fitness interdependence with the receiver and the target and the marginal cost/benefit in terms of pay-off differences caused by possible choices of the receiver and the target in the game. Moreover, gossipers can use this simple rule to make optimal decisions even under noise. We discuss empirical examples that support the predictions of our model and potential extensions.

This article is part of the theme issue ‘The language of cooperation: reputation and honest signalling’.

Cooperating to show that you care: costly helping as an honest signal of fitness interdependence

Social organisms often need to know how much to trust others to cooperate. Organisms can expect cooperation from another organism that depends on them (i.e. stake or fitness interdependence), but how do individuals assess fitness interdependence? Here, we extend fitness interdependence into a signalling context: costly helping behaviour can honestly signal one's stake in others, such that those who help are trusted more. We present a mathematical model in which agents help others based on their stake in the recipient's welfare, and recipients use that information to assess whom to trust. At equilibrium, helping is a costly signal of stake: helping is worthwhile for those who value the recipient (and thus will repay any trust), but is not worthwhile for those who do not value the recipient (and thus will betray the trust). Recipients demand signals when they value the signallers less and when the cost of betrayed trust is higher; signal costs are higher when signallers have more incentive to defect. Signalling systems are more likely when the trust games resemble Prisoner's Dilemmas, Stag Hunts or Harmony Games, and are less likely in Snowdrift Games. Furthermore, we find that honest signals need not benefit recipients and can even occur between hostile parties. By signalling their interdependence, organisms benefit from increased trust, even when no future interactions will occur. This article is part of the theme issue 'The language of cooperation: reputation and honest signalling'.

An evolutionary psychology view of forgiveness: individuals, groups, and culture

We review the logic of an evolutionary perspective on forgiveness, highlighting how insight into the likely function of forgiveness - solving adaptive problems related to acquiring and maintaining social relationships - has productively guided research and theory. A combination of experimental, longitudinal, cross-sectional, and cross-cultural evidence supports the claim that victims' perceptions of harmdoers' relationship value and exploitation risk causally influence whether or not victims forgive harmdoers. We also review the nascent literature on the topic of intergroup forgiveness and consider how the concepts associated with interpersonal forgiveness, such as apologies, relationship value, and exploitation risk, might help us understand forgiveness between groups, cultures, and societies. Finally, we explore the intersection of evolutionary and cultural perspectives on forgiveness, and consider how concepts from these two research traditions might be integrated to help us understand forgiveness even better.

Toddlers draw broad negative inferences from wrongdoers' moral violations

By 2 y of age, children possess expectations about several different moral principles. Building on these results, we asked whether children who observed a wrongdoer violate a principle would draw negative inferences from this violation about how the wrongdoer was likely to behave in other contexts. In four experiments, 25-mo-old toddlers (n = 152) first saw a wrongdoer harm a protagonist. When toddlers judged the wrongdoer's behavior to violate the principle of ingroup support or harm avoidance, they did not find it unexpected if the wrongdoer next violated the principle of fairness by dividing resources unfairly between two other protagonists (Exps. 2 and 3), but they did find it unexpected if the wrongdoer next acted generously by giving another protagonist most of a resource to be shared between them (Exp. 4). When toddlers did not construe the wrongdoer's harmful behavior as a moral violation, these responses reversed: They found it unexpected if the wrongdoer next acted unfairly (Exp. 1) but not if the wrongdoer next acted generously (Exp. 4). Detecting a moral violation thus lowered toddlers' assessment of the wrongdoer's moral character and brought down their expectations concerning the likelihood that the wrongdoer would perform: 1) obligatory actions required by other principles and 2) supererogatory or virtuous actions not required by the principles. Together, these findings expand our understanding of how young children evaluate others' moral characters, and they reveal how these evaluations, in turn, enable children to form sophisticated expectations about others' behavior in new contexts.

To Punish or to Restore: How Children Evaluate Victims' Responses to Immorality

Punishment is important for deterring transgressions and maintaining cooperation, while restoration is also an effective way to resolve conflicts and undo harm. Which way do children prefer when evaluating others' reactions to immorality? Across four experiments, Chinese preschoolers (aged 4–6, n = 184) evaluated victims' different reactions to possession violations (i.e., punishing the perpetrator or restoring the belongings). Children evaluated restorative reactions more positively than punitive ones. This tendency to favor restoration over punishment was influenced by the degree of punishment, with more pronounced patterns observed when punishment was harsher (Experiments 1–3). Indeed, when different degrees of punishment were directly contrasted (Experiment 4), children viewed victims who imposed milder punishment (“steal one object, remove one or two objects”) more positively than those who imposed harsh punishment (“steal one object, remove three objects”). These patterns were especially manifested in preschoolers who chose restoration when being put in the victim's situation, suggesting a consistency between evaluations and behaviors. Taken together, the current study showed that children prioritize protecting the victim over harshly punishing the perpetrator, which suggests an early take on the preferred way to uphold justice.

Revenge in Couple Relationships and Their Relation to the Dark Triad

Background: This research examines how, when a romantic partner commits a perceived transgression that leads to couple break up, vengeful reactions are predicted by the type of transgression and the Dark Triad of personality. Methods: An incidental sample of 2142 participants, half male and half female aged 18 to 70, completed a questionnaire developed by the authors to assess how they had reacted after being the perceived victims of a transgression committed by their partner and a measure of the Dark Triad. Results: Results show half of the people who feel as though they are victims of a partner transgression show revenge reactions. These reactions are more emotional than rational and do not usually anticipate their consequences or success. Moreover, revenge is related primarily to psychopathy and to a lesser extent to Machiavellianism. Psychopathy is the best predictor for revenge thoughts and actions, whereas narcissism does not predict revenge when controlling for other dark traits. Conclusions: This study contributes to the explanation of revenge reactions in couple relationships in relation to the type of transgression perceived and the Dark Triad. Conflicts that arise out of revenge may have long-lasting consequences for both the perceived aggressor and victim, and our results may be useful for assessing risks, monitoring, and preventing negative consequences for partners or ex-partners.

The association of polyvictimization with violent ideations in late adolescence and early adulthood: A longitudinal study

Violent ideations are increasingly recognized as an important psychological predictor for aggressive and violent behavior. However, little is known about the processes that contribute to violent ideations. This paper examines the extent to which polyvictimization triggers violent ideations in late adolescence and early adulthood, while also adjusting for dispositional and situational factors as well as prior violent ideations. Data came from three waves of the Zurich Project on the Social Development from Childhood into Adulthood (z-proso; n = 1465). Full-information maximum likelihood Tobit models were fitted to regress violent ideations experienced at ages 17 and 20 on multiple victimization experiences in the preceding 12 months while controlling for antecedent developmental risk factors and prior violent ideations. The results showed that violent ideations in late adolescence and early adulthood are influenced by violent thoughts, aggressive behavior, violent media consumption, moral neutralization of violence, and internalizing symptoms measured 2 years earlier. Experiences of polyvictimization significantly contributed to an increase in violent ideations both during late adolescence and in early adulthood. The exposure-response relationship between victimization and violent ideations did not significantly differ by sex. The findings are consistent with the notion that violent ideations are triggered by a retaliation-linked psychological mechanism that entails playing out other directed imaginary aggressive scenarios specifically in response to experiencing intentional harm-doing by others.

Experimental evidence that apologies promote forgiveness by communicating relationship value

Robust evidence supports the importance of apologies for promoting forgiveness. Yet less is known about how apologies exert their effects. Here, we focus on their potential to promote forgiveness by way of increasing perceptions of relationship value. We used a method for directly testing these causal claims by manipulating both the independent variable and the proposed mediator. Namely, we use a 2 (Apology: yes vs. no) × 2 (Value: high vs. low) concurrent double-randomization design to test whether apologies cause forgiveness by affecting the same causal pathway as relationship value. In addition to supporting this causal claim, we also find that apologies had weaker effects on forgiveness when received from high-value transgressors, suggesting that the forgiveness-relevant information provided by apologies is redundant with relationship value. Taken together, these findings from a rigorous methodological paradigm help us parse out how apologies promote relationship repair.

Evolution of deterrence with costly reputation information

Deterrence, a defender’s avoidance of a challenger’s attack based on the threat of retaliation, is a basic ingredient of social cooperation in several animal species and is ubiquitous in human societies. Deterrence theory has recognized that deterrence can only be based on credible threats, but retaliating being costly for the defender rules this out in one-shot interactions. If interactions are repeated and observable, reputation building has been suggested as a way to sustain credibility and enable the evolution of deterrence. But this explanation ignores both the source and the costs of obtaining information on reputation. Even for small information costs successful deterrence is never evolutionarily stable. Here we use game-theoretic modelling and agent-based simulations to resolve this puzzle and to clarify under which conditions deterrence can nevertheless evolve and when it is bound to fail. Paradoxically, rich information on defenders’ past actions leads to a breakdown of deterrence, while with only minimal information deterrence can be highly successful. We argue that reputation-based deterrence sheds light on phenomena such as costly punishment and fairness, and might serve as a possible explanation for the evolution of informal property rights.

"False positive" emotions, responsibility, and moral character

People often feel guilt for accidents-negative events that they did not intend or have any control over. Why might this be the case? Are there reputational benefits to doing so? Across six studies, we find support for the hypothesis that observers expect "false positive" emotions from agents during a moral encounter - emotions that are not normatively appropriate for the situation but still trigger in response to that situation. For example, if a person accidentally spills coffee on someone, most normative accounts of blame would hold that the person is not blameworthy, as the spill was accidental. Self-blame (and the guilt that accompanies it) would thus be an inappropriate response. However, in Studies 1-2 we find that observers rate an agent who feels guilt, compared to an agent who feels no guilt, as a better person, as less blameworthy for the accident, and as less likely to commit moral offenses. These attributions of moral character extend to other moral emotions like gratitude, but not to nonmoral emotions like fear, and are not driven by perceived differences in overall emotionality (Study 3). In Study 4, we demonstrate that agents who feel extremely high levels of inappropriate (false positive) guilt (e.g., agents who experience guilt but are not at all causally linked to the accident) are not perceived as having a better moral character, suggesting that merely feeling guilty is not sufficient to receive a boost in judgments of character. In Study 5, using a trust game design, we find that observers are more willing to trust others who experience false positive guilt compared to those who do not. In Study 6, we find that false positive experiences of guilt may actually be a reliable predictor of underlying moral character: self-reported predicted guilt in response to accidents negatively correlates with higher scores on a psychopathy scale.

Effect of Modulating Activity in the Right DLPFC on Revenge Behavior: Evidence From a Noninvasive Brain Stimulation Investigation

Revenge is common in our daily lives, and people feel good when engaging in revenge behavior. However, revenge behavior is a complex process and remains somewhat of a puzzle of human behavior. Neuroimaging studies have revealed that revenge behaviors are associated with activation of a neural network containing the anterior cingulate cortex, ventral striatum, inferior frontal gyrus, and dorsolateral prefrontal cortex (DLPFC). Recent brain stimulation research using transcranial direct current stimulation (tDCS) and transcranial magnetic stimulation has shown a causal relationship between brain regions and revenge behaviors, but the findings have been mixed. In the present study, we aimed to study whether stimulation in the DLPFC can change participants' revenge behavior in conditions where participants' wealth was taken away in different ways. We adapted the moonlighting game and designed a new paradigm. Our study revealed that revenge behavior increased following activation in the right DLPFC, suggesting that the right DLPFC plays an important role in overriding self-interest and retaliation. In addition, our results revealed that the right DLPFC is crucial in revenge behavior related to the motivation of invasion.

The prevalence of dyads in social life

A salient objective feature of the social environment in which people find themselves is group size. Knowledge of group size is highly relevant to behavioural scientists given that humans spend considerable time in social settings and the number of others influences much of human behaviour. What size of group do people actually look for and encounter in everyday life? Here we report four survey studies and one experience-sampling study (total N = 4,398) which provide evidence for the predominance of the dyad in daily life. Relative to larger group sizes, dyads are most common across a wide range of activities (e.g., conversations, projects, holidays, movies, sports, bars) obtained from three time moments (past activities, present, and future activities), sampling both mixed-sex and same-sex groups, with three different methodological approaches (retrospective reports, real-time data capture, and preference measures) in the United States and the Netherlands. We offer four mechanisms that may help explain this finding: reciprocity, coordination, social exclusion, and reproduction. The present findings advance our understanding of how individuals organize themselves in everyday life.

The Juxtaposition of Revenge and Forgiveness in Peer Conflict Experiences of Youth Exposed to Violence

In a sample of 95 urban Colombian mid-adolescents, this mixed-method study examined how youths' retaliatory desires and actions were juxtaposed with forgiveness and nonforgiveness in their narrative accounts of peer conflict. Quantitative analyses examined how retaliatory desire and action were associated with variations in youths' lifetime exposure to violence (ETV) and recent victimization by peers at school. These measures of violence exposure were related to revenge only in the context of unforgiven harms. Qualitative analyses explored aspects of youths' narrative accounts that may underlie the observed associations. Overall, findings suggest that ETV may interfere with youths' capacity to reflect on revenge in ways that recognize their own fallibility and thus open the door to forgiveness.

Exploring the Psychological Processes That Underlie Interpersonal Forgiveness: Replication and Extension of the Model of Motivated Interpersonal Forgiveness

When, why, and how does interpersonal forgiveness occur? These questions guided recent research that compared the relative abilities of empathy versus motivated reasoning models to account for the influence of relationship closeness on interpersonal forgiveness. Consistent support was provided for the Model of Motivated Interpersonal Forgiveness. This model hypothesizes that, following relationship transgressions, relationship closeness leads to a desire to maintain a relationship. Desire to maintain a relationship leads to motivated reasoning. And motivated reasoning fosters interpersonal forgiveness. The goal of the present research was to examine two concerns that emerged from the initial support for the Model of Motivated Interpersonal Forgiveness. First, were the measures of motivated reasoning and interpersonal forgiveness conflated, thus reducing the potential for empathy to account for interpersonal forgiveness? Second, did the analytic estimation used reduce the power to detect the mediational role of empathy? The present research examined these questions. When motivated reasoning was measured by thought listings (in addition to the original questionnaire items) and when the analytic estimation provided greater power, the Model of Motivated Interpersonal Forgiveness was replicated.