The evolution of altruism in human societies has been intensively investigated in social and natural sciences. A widely acknowledged recent idea is the “parochial altruism model,” which suggests that inter- group hostility and intragroup altruism can coevolve through lethal intergroup conflicts. The current article critically examines this idea by reviewing research relevant to intergroup conflicts in human evolutionary history from evolutionary biology, psychology, cultural anthropology, and archaeology. After a brief intro- duction, section 2 illustrates the mathematical model of (...) parochial altruism and some critiques of the model and its interpretation, primarily from an evolutionary biology point of view. Section 3 delves into the archaeological evidence of prehistoric intergroup conflicts in the Japanese archipelago’s Jomon and Yayoi periods, Europe’s Mesolithic period, and North America’s Pacific period as counter examples of the paro- chial altruism model. In section 4, the ethnographies of intergroup relationships and conflicts reveal that intergroup relationships in many ethnic groups are not as simple as the assumption in the mathematical model of parochial altruism. In section 5, we outline psychological research on intergroup conflicts which suggest that intergroup hostility and ingroup altruism are not necessarily correlated. In conclusion, we argue that the assumption and parameter settings of the parochial altruism model are inconsistent with empirical data. (shrink)

Is reducing large-scale intergroup conflict the business of corporations? Although large corporations can use their power and prominence to reduce intergroup conflict in society, it is unclear to what extent stakeholders support corporate Intergroup Responsibility. Study 1 showed that support for CIR correlates in theoretically meaningful ways with relevant economic, social, and moral attitudes, including fair market ideology, consumer support for corporate social responsibility, social dominance orientation, symbolic racism, and moral foundations. Studies 2 and 3 (...) employed experimental designs to test the hypothesis that business leaders who advocate for intergroup tolerance boost perceptions of corporations and their leaders as moral, just, and fair, which in turn, increases stakeholders’ support for CIR. We found support for this hypothesis across two highly publicized and contentious events related to racial conflict in the U.S.: The White supremacy rally in Charlottesville and the federal government’s announcement about the planned rescinding of the Deferred Action for Childhood Arrivals immigration policy. Specifically, exposing participants to real-world tweets by CEOs who advocated intergroup tolerance following these events increased participants’ support for CIR. This effect was mediated by heightened perceptions of corporations and their leaders as moral, just, and fair. Taken together, these findings enhance our understanding of the factors that shape stakeholders’ reactions to CIR; highlight intergroup conflict as an emerging arena for CSR; and illustrate the power of ethical intergroup leadership. (shrink)

Drawing on an idea proposed by Darwin, it has recently been hypothesised that violent intergroup conflict might have played a substantial role in the evolution of human cooperativeness and altruism. The central notion of this argument, dubbed ‘parochial altruism’, is that the two genetic or cultural traits, aggressiveness against out-groups and cooperativeness towards the in-group, including self-sacrificial altruistic behaviour, might have coevolved in humans. This review assesses the explanatory power of current theories of ‘parochial altruism’. After a brief (...) synopsis of the existing literature, two pitfalls in the interpretation of the most widely used models are discussed: potential direct benefits and high relatedness between group members implicitly induced by assumptions about conflict structure and frequency. Then, a number of simplifying assumptions made in the construction of these models are pointed out which currently limit their explanatory power. Next, relevant empirical evidence from several disciplines which could guide future theoretical extensions is reviewed. Finally, selected alternative accounts of evolutionary links between intergroup conflict and intragroup cooperation are briefly discussed which could be integrated with parochial altruism in the future. (shrink)

The present research used archaeological data, i.e., the data obtained from kamekan jar burials in the Mikuni Hills of the northern Kyushu area in the Mid- dle Yayoi period, to test the parochial altruism model. This model argued that out-group hate and in-group favor coevolved via prehistoric intergroup conflicts. If this model is accurate, such an out-group hate and in-group favor could be re- flected in the archaeological remains, such as pottery making; the more frequent intergroup conflicts are (...) and the more each group is opposed, the more independent and coherent each group will be and more evident cultural identity could be estab- lished within each group. We employed an elliptic Fourier analysis for the shapes of kamekan jar burials. We examined whether frequent intergroup conflicts in the period influenced kamekan jar pottery between subareas of the Mikuni Hills. The results suggested that the shapes of kamekan jar burials after the KIIIa type are slightly different between subareas, which is partially consistent with the model. However, the results do not support the model directly. (shrink)

How are group-based identities related to intergroup conflict? When and how do ethnic, religious, and national identities lead to oppression, violence, rebellion, war, mass-murder, and genocide? How do intergroup conflicts change people's identities? How might social identity be harnessed in the service of reducing conflict between groups? The chapters in this book present a sophisticated and detailed interdisciplinary analysis of the most topical and fundamental issues involved in understanding identity and conflict.

There is a large body of research on conflict in nonhuman animal groups that measures the costs and benefits of intergroup conflict, and we suggest that much of this evidence is missing from De Dreu and Gross's interesting article. It is a shame this work has been missed, because it provides evidence for interesting ideas put forward in the article.

We review the literature on various approaches to modeling animal intergroup conflict behavior in theoretical biology, highlight the intricacies emerging in the process of adding due biological realism to such models, and point out recent empirical findings that can inspire future theorizing.

In this paper we investigate intergroup conflict and examine the impact of strategies to manage and hopefully reduce it. To do this, we use a probabilistic computer simulation model, based on feedback principles. The model examines how conflict between two groups evolves over time. Group differences and the occurrence of intergroup incidents drive the model. Intergroup hostility which depends on past history, recent conflict incidents, and group differences is the key variable that indicates the (...) proclivity toward conflict between the two groups. We use the model to examine various cases and the effect of conflict management strategies. Based on the model results, we develop some conclusions about the applicability of the findings to actual situations, as well as directions for further research. (shrink)

We apply the author's computational approach to groups to our empirical work studying and modelling riots. We suggest that assigning roles in particular gives insight, and measuring the frequency of bystander behaviour provides a method to understand the dynamic nature of intergroup conflict, allowing social identity to be incorporated into models of riots.

The psychology underlying revenge in an intergroup context is built around a small handful of recurrent interaction types. Analyzing the cost/benefit calculations of each agent's role within these interaction types provides a more precise way to characterize intergroup conflict and revenge. This in turn allows for more precise models of the psychology of intergroup conflict to be proposed and tested.

Building on and partially refining previous theoretical work, this paper presents an extended simulation model of ancestral warfare. This model (1) disentangles attack and defense, (2) tries to differentiate more strictly between selfish and altruistic efforts during war, (3) incorporates risk aversion and deterrence, and (4) pays special attention to the role of brutality. Modeling refinements and simulation results yield a differentiated picture of possible evolutionary dynamics. The main observations are: (i) Altruism in this model is more likely to evolve (...) for defenses than for attacks. (ii) Risk aversion, deterrence and the interplay of migration levels and brutality can change evolutionary dynamics substantially. (iii) Unexpectedly, one occasional simulation outcome is a dynamically stable state of ‘tolerated intergroup theft’, raising the question if corresponding patterns also exist in real intergroup conflicts. Finally, possible implications for theories of the co-evolution of bellicosity and altruism in humans are discussed. (shrink)

Existential threat lies at the heart of intergroup conflict, but the literature on existential concerns lacks clear conceptualization and integration. To address this problem, we offer a new conceptualization and measurement of existential threat. We establish the reliability and validity of our measure, and to illustrate its utility, we examine whether different existential threats underlie the association between political ideology and support for specific political policies. Study 1 (N = 798) established the construct validity of the scale, and (...) revealed four distinct existential threats: personal death, physical collective annihilation, symbolic collective annihilation, and past victimization. Study 2 (N = 424) confirmed the 4-factor structure, and the convergent and discriminant validity of the scale. Study 3 (N = 170) revealed that the association between a hawkish political ideology and support for hardline policies was mediated by past victimization, whereas the association between a dovish political ideology and conciliatory policies was mediated by concerns over collective symbolic annihilation. Study 4 (N = 503) conceptually replicated the pattern of findings found in Study 3, and showed that at times of conflict, physical collective annihilation concerns also mediate the relationship between hawkish ideologies and support for hardline policies. In both Studies 3 and 4, when controlling for other threats, personal death did not play a significant role. These results underscore the need to consider the multidimensional nature of existential threat, especially in the context of political conflict. (shrink)

An intergroup conflict based on fundamental incompatibilities such as different group identity and values is the highest and the unhealthiest level of conflict in a local congregation setting. In this case, a peacebuilding process is required in order to transform the conflict situation to achieve sustainable peace. Different from peacemaking and peacekeeping, peacebuilding takes a longer period to transform the cultural, social and structural problems on the macro level as well as to change behaviours, perceptions and (...) perspectives of individuals on the micro level. This article attempts to disclose the characteristics of intergroup conflict in an urban congregation in the UK to describe its serious intensity by analysing its nature and scale. Furthermore, it demonstrates how the conflict transformation approach, as a long-term peacebuilding process, can be used effectively not only to alleviate intergroup conflict but also to eventually promote rehabilitation and reintegration through fostering a culture of peace. (shrink)

Research on intergroup emotions has largely focused on the experience of emotions and surprisingly little attention has been given to the expression of emotions. Drawing on the social-functional approach to emotions, we argue that in the context of intergroup conflicts, outgroup members’ expression of disappointment with one’s ingroup induces the complementary emotion of collective guilt and correspondingly a collective action protesting ingroup actions against the outgroup. In Study 1 conducted immediately after the 2014 Gaza war, Jewish-Israeli participants received (...) information about outgroup’s expression of emotions. As predicted, outgroup’s expression of disappointment increased collective guilt and willingness to participate in collective action, but only among those who saw the intergroup situation as illegitimate. Moreover, collective guilt mediated the relationship between disappointment expression and collective action, moderated, again, by legitimacy perception. In Study 2, we replicated these results in the context of racial tension between Black and White Americans in the US. We discuss the theoretical and applied implications of the findings. (shrink)

Here, we argue that attackers in intergroup conflicts are also likely to hold strong identity fusion, anticipate threat from the out-groups, and retaliate by signaling preemptive aggressiveness, which may not be asymmetrically exclusive to defenders. We propose that the study of the intergroup and intragroup dynamics could highlight more specific, robust markers to differentiate types of defenders from attackers.

People living in areas of intractable conflicts experience extreme negative emotions which ultimately lead to support of aggressive policies. Emotion regulation and particularly cognitive reapprais...

We investigated the influence of humiliation on inter-group conflict in three studies of Palestinians living in the West Bank and Gaza. We demonstrate that experienced humiliation produces an inertia effect; a tendency towards inaction that suppresses rebellious or violent action but which paradoxically also suppresses support for acts of inter-group compromise. In Study 1, Palestinians who felt more humiliated by the Israeli occupation were less likely to support suicide attacks against Israelis. In Study 2, priming Palestinians with a humiliating (...) experience caused fewer expressions of joy when subsequently hearing about suicide attacks. In Study 3, Palestinians who felt more humiliated by peace deals were less likely to support those deals, while Israeli symbolic compromises that decreased feelings of humiliation increased support for the same deals. While the experience of humiliation does not seem to contribute to political violence, it does seem to suppress support for conflict resolution. (shrink)

Many modern-day groups differ from prehistoric ones regarding the proportion of members who are related to any particular individual. From an evolutionary mismatch lens, an appreciation of this disparity could help better explain the potential dilution of group cohesion during peacetime and inform novel, more effective approaches to enhancing group unity – strategies that might enhance national security around the globe.

The target article focuses on how attacker-defender conflicts are fought. This commentary complements it by considering how attacker-defender conflicts may be resolved at the bargaining table. I highlight multiple linkages between asymmetric intergroup conflict as modeled with the attacker-defender game and negotiation research and illustrate how the proposed model of attacker-defender conflicts can inspire new research on intergroup negotiation.

Although humans qualify as one of the most cooperative animal species, the scale of violent intergroup conflict among them is unparalleled. Explanations of the underlying motivations to participate in an intergroup conflict, however, remain unsatisfactory. While previous research shows that intergroup conflict increases individually costly behavior to the benefit of the in-group, it has failed to identify robust triggers of aggressive behavior directed at out-groups. Here, we present a controlled laboratory experiment which demonstrates that (...) such aggression can be provoked systematically by manipulating the extent to which the own group is perceived to be on the offensive or the defensive side of a conflict. We find direct and causal evidence that the motivation to protect the in-group is not only a predictor of retaliatory aggression, but also promotes preemptive offensive actions against out-groups if they pose a potential threat. This finding improves our understanding of the escalation of intergroup conflicts and may have important implications for their prevention, as we find in our experiment that removing out-group threat substantially reduced intergroup aggression and led to full peace. (shrink)

Although humans qualify as one of the most cooperative animal species, the scale of violent intergroup conflict among them is unparalleled. Explanations of the underlying motivation to participate in an intergroup conflict, however, remain unsatisfactory. While previous research shows that intergroup conflict increases ‘in-group love’, it fails to identify robust triggers of ‘out-group hate’. Here, we present a controlled laboratory experiment, which demonstrates that ‘out-group hate’ can be provoked systematically. We find direct and causal (...) evidence that the intention to protect the in-group is not only a crucial motivator of ‘out-group hate’ in defensive reactions, but also promotes preemptive offensive actions against out-group threat. Hence, the strength of ‘out-group hate’ depends on whether the own group is perceived to be on the offensive or the defensive side of the conflict. This finding improves our understanding of the escalation of intergroup conflicts and may have important implications for their prevention, as we find in our experiment that removing out-group threat substantially reduces intergroup aggression, leading to full peace. (shrink)

Intergroup and long-distance relationships are both central features of human social life, but because intergroup relationships are emphasized in the literature, long-distance relationships are often overlooked. Here, we make the case that intergroup and long-distance relationships should be studied as distinct, albeit related, features of human sociality. First, we review the functions of both kinds of relationship: while both can be conduits for difficult-to-access resources, intergroup relationships can reduce intergroup conflict whereas long-distance relationships are (...) especially effective at buffering widespread resource shortfalls. Second, to illustrate the importance of distinguishing the two relationship types, we present a case study from rural Bolivia. Combining ethnography and two different experimental techniques, we find that the importance of intergroup relationships—and the salience of group membership itself—varies across populations and across methods. Although ethnography revealed that participants often rely on long-distance relationships for resource access, we were unable to capture participant preferences for these relationships with a forced-choice technique. Taken together, our review and empirical data highlight that (1) intergroup and long-distance relationships can have different functions and can be more or less important in different contexts and (2) validating experimental field data with ethnography is crucial for work on human sociality. We close by outlining future directions for research on long-distance relationships in humans. (shrink)

Fundamental problems of environmental sustainability, including climate change and fisheries management, require collective action on a scale that transcends the political and cultural boundaries of the nation-state. Rational, self-interested neoclassical economic theories of human behavior predict tragedy in the absence of third party enforcement of agreements and practical difficulties that prevent privatization. Evolutionary biology offers a theory of cooperation, but more often than not in a context of discrimination against other groups. That is, in-group boundaries are necessarily defined by those (...) excluded as members of out-groups. However, in some settings human’s exhibit behavior that is inconsistent with both rational economic and group driven cooperation of evolutionary biological theory. This paper reports the results of a non-cooperative game-theoretic exercise that models a tragedy of the commons problem in which groups of players may advance their own positions only at the expense of other groups. Students enrolled from multiple universities and assigned to different multi-university identity groups participated in experiments that repeatedly resulted in cooperative outcomes despite intergroup conflicts and expressions of group identity. We offer three possible explanations: students were cooperative because they were in an academic setting; students may have viewed their instructors as the out-group; or the emergence of a small number of influential, ethical leaders is sufficient to ensure cooperation amongst the larger groups. From our data and analysis, we draw out lessons that may help to inform approaches for institutional design and policy negotiations, particularly in climate change management. (shrink)

Conflict zone entrepreneurs—local entrepreneurs running small businesses in conflict settings—have paradoxical impacts on stability: holding the ability both to foster peace but also to enhance conflict. Prior scholarly work has been unable to explain this divergence, as existing entrepreneurial indicators do not account for fundamental peacebuilding elements. In response, the article consolidates divergent fields of study, applies paradox theory to analyze underlying tensions in the field, and reframes entrepreneurship through a peacebuilding lens based on intergroup inclusivity (...) and value-creating business practices. Using several cases, this article shows how entrepreneurial activity in conflict zones can foster sustainable peace, limited peace, or conflict, arguing that entrepreneurship based on value-creating and inclusive practices can result in pro-peace outcomes. The article offers policy recommendations for local governments and the humanitarian sector seeking to use entrepreneurship in conflict zones to promote peace. (shrink)

The field of “business for peace” recognizes the role that businesses can play in peacebuilding. However, like much of the discussion concerning business in conflict zones, it has prioritized the view of multinationals, often overlooking the role of indigenous local firms. The economic, social, and intergroup dynamics experienced by local businesses in conflict zones are understudied, with the current paper beginning by positioning micro- and small enterprises in the peacebuilding debate, then engaging with multidisciplinary works to understand (...) how they foster peace. Through a case study set in north Lebanon, we conducted semi-structured interviews with twenty-three MSE owners in one industry who operate across sectarian divisions and with recently displaced Syrian refugees. Our findings indicate that local business activity can simultaneously promote peace and foster conflict, with peacebuilding improved when intergroup differences are reduced within the operating environment. Furthermore, the importance of economic development was elevated for local businesses, suggesting that peace through mechanisms such as social development, the rule of law, and training, is only achieved if economic needs are alleviated through these measures. We conclude by citing how contextual factors in conflict zones can enhance intergroup differences, and how resolving such factors can promote peacebuilding, with further empirical work needed in this area. (shrink)

Conflict can profoundly affect individuals and their groups. Oftentimes, conflict involves a clash between one side seeking change and increased gains through victory and the other side defending the status quo and protecting against loss and defeat. However, theory and empirical research largely neglected these conflicts between attackers and defenders, and the strategic, social, and psychological consequences of attack and defense remain poorly understood. To fill this void, we model (1) the clashing of attack and defense as games (...) of strategy and reveal that (2) attack benefits from mismatching its target's level of defense, whereas defense benefits from matching the attacker's competitiveness. This suggests that (3) attack recruits neuroendocrine pathways underlying behavioral activation and overconfidence, whereas defense invokes neural networks for behavioral inhibition, vigilant scanning, and hostile attributions; and that (4) people invest less in attack than defense, and attack often fails. Finally, we propose that (5) in intergroup conflict, out-group attack needs institutional arrangements that motivate and coordinate collective action, whereas in-group defense benefits from endogenously emerging in-group identification. We discuss how games of attack and defense may have shaped human capacities for prosociality and aggression, and how third parties can regulate such conflicts and reduce their waste. (shrink)

A group in intergroup conflict needs to overcome the collective action problem in order to defend itself against an external enemy. This leads to increasing complexity that cannot be adequately covered by just scaling up the model of intragroup conflicts. Research on cultural evolution and evolutionary psychology shows that external conflict has profound effects on group organization.

Western democracies experience profound conflicts that induce concerns about polarization and social cohesion. Yet although conflicts are a core feature of democracies, the forms, functions, and dynamics of democratic conflicts have rarely been subject of political theory. This paper aims at furthering our understanding of democratic conflicts. It analyzes the theory of conflict in Mouffe's agonistic pluralism, confronts it with sociological conflict theory, and presents concrete points of departure for a more comprehensive theory of democratic conflicts. The paper, (...) thus, contributes to two lines of research: (1) Regarding agonistic theories, the paper shows that agonistic pluralism fails to provide a convincing theory of conflict since it underestimates the mechanisms and effects of conflict dynamics (e.g. intergroup cohesion, intragroup conflict, domination, and escalation) and fails to account for the variety of conflict interactions. Proponents of agonistic pluralism should therefore invest more into clarifying their core concept. (2) For a general account of democratic conflicts, the paper proposes to pursue interdisciplinary research on the cognitive concepts shaping conflict interactions, the linked practices of conflict regulation, and the processual dynamics of conflicts. (shrink)

Hope is a positive emotion that plays a pivotal role in intractable conflicts and conflict resolution processes by inducing conciliatory attitudes for peace. As a catalyser for conflict resolution, it is important to further understand hope in such contexts. In this article we present a novel framework for understanding hope in contexts of intergroup conflict. Utilizing appraisal theory of emotions and heavily relying on the implicit theories framework, we describe three targets upon which hope appraisals focus (...) in intractable conflict—the conflict, the outgroup, and the ingroup. Next, we describe the importance of developing ways to experimentally induce hope, and utilize the appraisal-target framework to describe and classify existing and potential interventions for inducing hope in intractable conflict resolution. (shrink)

We argue that how players perceive the attack-defense game might matter far more than its actual underlying structure in determining the outcomes of intergroup conflict. Leaders can use various tactics to dynamically modify these perceptions, from collective victimization to the distortion of the perceived payoffs, with some followers being more receptive than others to such leadership tactics.

Group representations need not reduce to triadic conflict roles, although we infer group membership from them. A conceptual primitive of as one solidary, bounded unity or clique may motivate and facilitate reasoning about cooperative group interactions in context with and without intergroup conflict and may also be necessary for representing which agents would replace one another in a triadic conflict.

Understanding people’s attitudes toward conciliatory policies in territorial interethnic conflicts is important for a peaceful conflict resolution. We argue that ingroup identification in combination with the largely understudied territorial ownership perceptions can help us explain attitudes toward conciliatory policies. We consider two different aspects of ingroup identification—attachment to one’s ethnic ingroup as well as ingroup superiority. Furthermore, we suggest that perceptions of ingroup and outgroup ownership of the territory can serve as important mechanisms that link the different forms of (...) ingroup identification with conciliatory policies. In the context of the Israeli-Palestinian conflict, among Israeli Jews, we found that ingroup superiority, but not attachment, was negatively related to conciliatory policies. This relationship was explained by lower outgroup ownership perceptions of the territory. Our findings highlight the relevance of studying ingroup superiority as a particularly relevant dimension of identification that represents a barrier to acknowledging outgroup’s territorial ownership, and is thus indirectly related to less support for conciliatory policies in intergroup conflict settings. (shrink)

Revenge has been a subject of concern in most intellectual traditions throughout history, and even when social norms regard it as permissible or even obligatory, it is commonly recognised as being more counterproductive than beneficial. In this book, Kit R. Christensen explores this provocative issue, offering an in-depth account of both the nature of revenge and the causes and consequences of the desire for this kind of retaliatory violence. He then develops a version of eudaimonistic consequentialism to argue that vengeance (...) is never morally justified, and applies this to cases of intergroup violence where the lust for revenge against a vilified 'Them' is easily incited and often exploited. His study will interest a wide range of readers in moral philosophy as well as social philosophers, legal theorists, and social/behavioural scientists. (shrink)

We argue that the roles of attacker and defender in asymmetric intergroup conflict are structurally ambiguous and their perception is likely to be subjectively biased. Although this allows for endogenous selection into each role, we argue that claiming the role of the defender likely is more advantageous for conflict participants.

Considering that negative intergroup emotions can hinder conflict resolution, we proposed integrative emotion regulation as possibly predicting conciliatory policies towards outgroups in violent conflict. Two studies examined Jewish Israelis’ self-reported IER, empathy, liberal attitudes, and support for humanitarian aid to Palestinians in Gaza. Study 1 found that unlike reappraisal Jewish Israelis’ ability to explore emotions promoted concern for others’ emotions, which in turn predicted support for humanitarian aid. Study 2 replicated this mediation model, additionally confirming that liberal (...) attitudes moderated the relation between IER and support for humanitarian aid. Thus, IER linked more strongly with humanitarian support when the commitment for liberal egalitarian beliefs was high. Preliminary results hold important theoretical and practical implications regarding the potential to empathise with outgroup members in intractable conflicts. (shrink)

To build cultures of peace, one must often lay aside the "expert" label and become a student in the world who is willing to learn from other cultures in pursuit of peace. To set up an intercultural dialogue on this topic, the Committee for the Psychological Study of Peace, in conjunction with the University for Peace and the Institute for Psychological Research of the University of Costa Rica, sponsored the 6th International Symposium on the Contribution of Psychology to Peace. This (...) special issue extends the dialogue which began at the Symposium. Aiming to help define the role and contributions of psychologists in building cultures of peace, the articles in this issue address: *topics relating to human rights; *how psychologists can contribute to democratization; *how psychology has much to say on the causes and dynamics of intolerance and the processes of building tolerance in the context of intergroup relations; *how psychology can contribute to understanding and fostering nonviolence; *how cultures of peace will not be possible without a concerted effort to bring about global environmental security and that our failure to restore environmental health is fundamentally a psychological problem; and *psychologically informed policies for the promotion of cultures of peace, including the importance of gender equity. (shrink)

Dixon et al. overlook the fact that contact predicts not only favorable out-group attitudes/evaluations, but also cognitions, affect, and behavior. The weight of evidence supporting the benefits of intergroup contact cautions against throwing the baby out with the bathwater. The goal to in pursuit of social equality, we argue, incautiously risks hurling us down the proverbial rabbit hole.

Civilian casualties contribute to the perpetuation of intergroup conflicts through increased radicalization and hostilities, but little is known on the psychological processes that affect responses to outgroup civilian casualties. The goal of the present research was to explore two factors expected to lead group members to act more cautiously, thereby reducing civilian casualties: perceived accountability and forecast group-based moral emotions. In two studies, Jewish–Israeli civilians (Study 1) and soldiers (Study 2) were asked to forecast their group-based moral emotions in (...) case of Palestinian (i.e., outgroup) civilian casualties, then exposed to accountability manipulations. Participants who expected to feel low levels of shame and were primed with accountability made more cautious decisions than those in the control condition. Participants who expected to feel high levels of shame were unaffected by accountability primes. Theoretical and practical implications regarding forecast moral emotions and accountability as an intervention in intergroup conflicts are discussed. (shrink)

This article offers a conceptual framework for discussing the role of envy within processes of transitional justice. Transitional justice importantly includes the transformation of intergroup dynamics of interaction in the aftermath of societal conflicts and upheavals. Such transformation aims to realise “interactive” justice in transitional justice by reshaping belief and value systems, and by moulding emotional responses between the involved parties. A nuanced understanding of the emotions at play in intergroup antagonistic dynamics of interaction is thus essential to (...) transitional justice. Among the many emotions that we could address in such scenarios, we target envy. Envy, in its various forms, features prominently in many societal conflicts and upheavals, and has, therefore, the potential to undermine or, conversely, support just intergroup interactions. However, the ambivalent role of this emotion has been scantly analysed in the philosophical literature on transitional justice. We make a start on filling this lacuna by developing a conceptual framework which is necessary to appreciate how envy and its varieties are epistemically and practically relevant to realising interactive justice in transitional justice processes. (shrink)

The ten original studies included in this Research Topic investigate selected assumptions and predictions of parochial altruism theory in detail. We, the editors, are convinced that their highly instructive findings will help researchers interested in parochial altruism, but also in intergroup psychology more generally, to gain a much more fine-grained understanding of the interplay of altruistic and spiteful motives in human decision making in the context of intergroup relations. The broad range of disciplines represented by the authors contributing (...) to this Research Topic and the variety of methods used in their studies are representative for the current interdisciplinary interest in parochial altruism. The most important insight that, in our view, can be derived from the works collected here is that human decision making in intergroup contexts is more complex than suggested by current theory. Thus, we hope that future theorizing on parochial altruism will be stimulated by the evidence gathered in this Research Topic. In this editorial, we briefly highlight central findings reported here, which, to us, appear most informative for prospective enhancements of parochial altruism theory. (shrink)

We report three studies which test a sexual selection hypothesis for male war heroism. Based on evolutionary theories of mate choice we hypothesize that men signal their fitness through displaying heroism in combat. First, we report the results of an archival study on US-American soldiers who fought in World War II. We compare proxies for reproductive success between a control sample of 449 regular veterans and 123 surviving Medal of Honor recipients of WWII. Results suggest that the heroes sired more (...) offspring than the regular veterans. Supporting a causal link between war heroism and mating success, we then report the results of two experimental studies. We find evidence that female participants specifically regard men more sexually attractive if they are war heroes. This effect is absent for male participants judging female war heroes, suggesting that bravery in war is a gender specific signal. Finally, we discuss possible implications of our results. (shrink)

Intra- and intergroup conflict are likely to have been recurrent features of human evolutionary history; however, little research has investigated the factors that affect men’s combat alliance decisions. The current study investigated whether features of previous one-on-one combat with an opponent affect men’s interest in allying with that opponent for future group combat. Fifty-eight undergraduate men recruited from a psychology department subject pool participated in a one-on-one laboratory fight simulation. We manipulated fight outcome, perceived fighter health asymmetry, and (...) the presence of a witness over six sets of five rounds of fighting. Following each set, we asked men how interested they would be in allying with their opponent for future group combat. We found that men were more interested in allying with their opponent for future group combat if their opponent won the fight or if a witness was present, but perceived fighter-health asymmetry did not affect men’s decision to ally with their opponent. Exploratory analyses revealed a two-way interaction between fight outcome and the presence of a witness, such that winners without a witness present expressed less interest in allying with their opponent for future group combat. Our findings suggest that men attend to the benefits of allying with a man who has demonstrated relatively superior fighting ability. Alliance with a previous opponent for group combat may vary with the relationship value of the opponent and the utility of demonstrating cooperativeness to third-party observers. These findings inform our understanding of coalition formation. (shrink)

For much of their history, the relationship between anthropology and psychology has been well captured by Robert Frost's poem, “Mending Wall,” which ends with the ironic line, “good fences make good neighbors.” The congenial fence was that anthropology studied what people think and psychology studied how people think. Recent research, however, shows that content and process cannot be neatly segregated, because cultural differences in what people think affect how people think. To achieve a deeper understanding of the relation between process (...) and content, research must integrate the methodological insights from both anthropology and psychology. We review previous research and describe new studies in the domain of folk biology which examine the cognitive consequences of different conceptualizations of nature and the place of humans within it. The focus is on cultural differences in framework theories among Native Americans and European American children and adults living in close proximity in rural Wisconsin. Our results show that epistemological orientations affect memory organization, ecological reasoning, and the perceived role of humans in nature. This research also demonstrates that cultural differences in framework theories have implications for understanding intergroup conflict over natural resources and are relevant to efforts to improve science learning, especially among Native American children. (shrink)

Previous theoretical accounts have predicted that warfare and intergroup conflict are environmental factors that contribute to the emergence of a fast life-history strategy. However, this assumption has never been directly empirically tested. We examined youth who grew up in a territory that experienced violent intergroup conflict and compared them with a control group on various life-history measures: age of first sexual intercourse, mating behavior, desired timing of marriage and first reproduction and desired number of children. We (...) also measured other characteristics to explore the congruence between them and exposure to conflict. Participants from the postconflict society showed indications of faster life-history strategy: greater mating effort, a tendency to marry and have their first child sooner, and a larger desired number of children. Furthermore, interactions between exposure to conflict and participants’ sex were found: females from a postconflict society want to have their child earlier, and males have elevated short-term mating success. Finally, the exposure to violent conflict turned out to have congruent effects with economic poverty but not troublesome family relations. The findings are in accordance with life-history theory and show the adaptiveness of human behavior related to fitness optimization in hostile and dangerous environments. (shrink)