Selfishness examined: Cooperation in the absence of egoistic incentives

The Emergence of Specialized Roles Within Groups

Humans routinely form groups to achieve goals that no individual can accomplish alone. Group coordination often brings to mind synchrony and alignment, where all individuals do the same thing (e.g., driving on the right side of the road, marching in lockstep, or playing musical instruments on a regular beat). Yet, effective coordination also typically involves differentiation, where specialized roles emerge for different members (e.g., prep stations in a kitchen or positions on an athletic team). Role specialization poses a challenge for computational models of group coordination, which have largely focused on achieving synchrony. Here, we present the CARMI framework, which characterizes role specialization processes in terms of five core features that we hope will help guide future model development: Communication, Adaptation to feedback, Repulsion, Multi-level planning, and Intention modeling. Although there are many paths to role formation, we suggest that roles emerge when each agent in a group dynamically allocates their behavior toward a shared goal to complement what they expect others to do. In other words, coordination concerns beliefs (who will do what) rather than simple actions. We describe three related experimental paradigms-"Group Binary Search," "Battles of the Exes," and "Find the Unicorn"-that we have used to study differentiation processes in the lab, each emphasizing different aspects of the CARMI framework.

Howard Rachlin: An extended scientist

During the latter half of his career, Rachlin's work increasingly focused on integrating the study of temporal discounting and social cooperation-choices for an extended self. His notion of a self that is extended across time and social space is a useful framework within which to consider Rachlin's impact as a philosopher, scientist, and mentor over the course of his 56-year career in behavior science.

Beyond Reciprocity: Forgiveness, Generosity, and Punishment in Continuing Dyadic Interactions

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 ranges from punishment to generosity, and that the nuances of the relationship and interaction will dictate which behavior is likely to occur. We will examine emotional consequences of punishment, reciprocity, and forgiveness in long-term dyadic social exchanges. Finally, we argue that dyads move beyond reciprocity to a more forgiving, generous strategy to reestablish cooperation, and continue the relationship when noncooperation arises, once the motivations shift has occurred.

Psychological Selfishness

Selfishness is central to many theories of human morality, yet its psychological nature remains largely overlooked. Psychologists often draw on classical conceptions of selfishness from evolutionary biology (i.e., selfish gene theory), economics (i.e., rational self-interest), and philosophy (i.e., psychological egoism), but such characterizations offer limited insight into the psychology of selfishness. To address this gap, we propose a novel framework in which selfishness is recast as a psychological construction. From this view, selfishness is perceived in ourselves and others when we detect a situation-specific desire to benefit the self that disregards others' desires and prevailing social expectations for the situation. We argue that detecting and deterring such psychological selfishness in both oneself and others is crucial in social life-facilitating the maintenance of social cohesion and close relationships. In addition, we show how using this psychological framework offers a richer understanding of the nature of human social behavior. Delineating a psychological construct of selfishness can promote coherence in interdisciplinary research on selfishness and provide insights for interventions to prevent or remediate the negative effects of selfishness.

Influence of Group Identification on Malicious and Benign Envy: A Cross-Sectional Developmental Study

Envy is the result of a social comparison that shows us a negative image of ourselves. The present study addresses the effect of the context of group comparison and group identification on children's expression of this emotion. Through different stories, participants aged between 6 and 11 years were exposed to four contexts of upward social comparison in which they had to adopt the role of the disadvantaged character. From their emotional responses and their decisions in a resource allocation task, three response profiles were created: malicious envy, benign envy, and non-envy. Although we found important differences between verbal and behavioral responses, the results showed greater envy, both malicious and benign, when the envied was an out-group. On the other hand, when the envied belonged to the in-group and competed with a member of the out-group, malicious but not benign envy practically disappeared. With age, envious responses decreased, and non-envious responses increased. The role of social identity in the promotion and inhibition of envy is discussed, as well as the acquisition of emotional display rules in the benign envy and non-envy profiles.

Group decision-making from an evolutionary/adaptationist perspective

Over the 20 years that Group Processes & Intergroup Relations has been in existence, evolutionary theory has begun to play a larger role in our understanding of human social behavior. Theory and research on group decision-making is no exception and the present paper attempts to briefly highlight how an evolutionary/adaptationist perspective has informed our understanding of how groups reach consensus and make collective choices. In addition, we attempt to show that humans are not the only species that use group processes to make important choices. Looking for similarities and continuities among research domains with different species should lead to a more unified and informed understanding of group decision-making processes and outcomes.

Behavior, Reinforcement and Utility

The standard economic assumption about human behavior is that it optimizes overall utility. But in many controlled experiments on behavioral allocation, it has been found that organisms allocate their behavior so as to earn equal average rates of reinforcement from all alternatives. Equalizing average rates of reinforcement is a principle of allocation that generically violates the assumption of optimality.

The Evolution of Truly Social Cognition: The Core Configurations Model

This article introduces a vocabulary suitable for evolutionary analyses in the human cognitive, social, and behavioral sciences. The vocabulary carves a middle way between advocates and critics of evolutionary perspectives by substituting the concept of repeated assembly for nature-nurture dualism. A model of core configurations-based on human morphology and ecology in human evolutionary history-is presented, and I argue that these configurations offace-to-face groups are the selective context for uniquely human mental systems. Hence, human cognition is “truly social,” specialized for group living. The relevance of the core configuration model is illustrated with respect to two areas of interest to social psychologists: the self and social identity, and distributed cognition and shared reality. A final section illustrates the integrative power of the core configuration model with a brief comparison of the social and cognitive tasks faced by scientists and foragers.

The Paranoid Optimist: An Integrative Evolutionary Model of Cognitive Biases

Human cognition is often biased, from judgments of the time of impact of approaching objects all the way through to estimations of social outcomes in the future. We propose these effects and a host of others may all be understood from an evolutionary psychological perspective. In this article, we elaborate error management theory (EMT; Haselton & Buss, 2000). EMT predicts that if judgments are made under uncertainty, and the costs of false positive and false negative errors have been asymmetric over evolutionary history, selection should have favored a bias toward making the least costly error. This perspective integrates a diverse array of effects under a single explanatory umbrella, and it yields new content-specific predictions.

Taking the Social Origins of Human Nature Seriously: Toward a More Imperialist Social Psychology

To recognize that human beings are adapted for social living is fundamental to the science of human psychology. I argue that the development of broad social psychological theory would benefit from taking this basic premise more seriously. We need to pay more attention to the implications for personality and social psychology of recognizing that all of the building blocks of human psychology—cognition, emotion, motivation-have been shaped by the demands of social interdependence. In this article I illustrate the generative potential of this basic premise for development of more expansive social theory.

Singing Promotes Cooperation in a Diverse Group of Children

Abstract. Previous research involving preschool children and adults suggests that moving in synchrony with others can foster cooperation. Song provides a rich oscillatory framework that supports synchronous movement and may thus be considered a powerful agent of positive social relations. In the current study, we assessed this hypothesis in a group of primary-school aged children with diverse ethnic and socioeconomic backgrounds. Children participated in one of three activity conditions: group singing, group art, or competitive games. They were then asked to play a prisoner’s dilemma game as a measure of cooperation. Results showed that children who engaged in group singing were more cooperative than children who engaged in group art or competitive games.

A Functional Theory of Psychogenic Illness

The functional theory of psychogenic illness proposes that the human capacity for psychological states to cause physical illness evolved during the Paleolithic as an adaptive mechanism for ensuring mutually interdependent behaviour under conditions when mutual interdependence was essential for survival. This integrative theory is consistent with existing data from several disciplines, including archaeology, anthropology, ecology and health psychology, and leads to two sorts of empirical consequence for health psychology. First, the theory acts as a heuristic for suggesting the most predictive psychological units for use in health psychology: the current weak or inconsistent results may be the consequence of using an inappropriate psychological unit, namely behavioural aggregation. Secondly, the theory provides predictions about how psychological variables should interact with type of disease, age and sex.

Effects of Inequality and Reasons for Inequality on Group Identification and Cooperation in Social Dilemmas

Three studies tested the hypotheses that inequality among group members, as well as specific reasons for inequality, would significantly influence strength of group identification and cooperative responses to a social dilemma. In Study 1, participants reacted to scenarios describing a public good social dilemma. For some scenarios there was an equal distribution of initial resources, while in others the distribution was unequal. As predicted, group identification led to more cooperation in the dilemma. Starting with more money tended to reduce group identification for females but to increase it for males. In Study 2, participants were faced with an actual one-trial public good social dilemma involving real money. In some conditions, participants began with endowments of different sizes, and the inequality was explained as either random or justified. As predicted, reasons for inequality as well as the fact of inequality had an impact on group identification which, in turn, influenced cooperation in the dilemma. Replicating the results of Study 1, different conditions tended to enhance group identification for women and men. Study 3 was a conceptual replication of Study 2, and resulted in similar findings. Overall, these results may have important implications for real-world dilemmas, where inequality among the parties is almost always a salient feature.

The Social Self: On Being the Same and Different at the Same Time

Mfost of social psychology's theories of the self fail to take into account the significance of social identification in the definition of self. Social identities are self-definitions that are more inclusive than the individuated self-concept of most American psychology. A model of optimal distinctiveness is proposed in which social identity is viewed as a reconciliation of opposing needs for assimilation and differentiation from others. According to this model, individuals avoid self-construals that are either too personalized or too inclusive and instead define themselves in terms of distinctive category memberships. Social identity and group loyalty are hypothesized to be strongest for those self-categorizations that simultaneously provide for a sense of belonging and a sense of distinctiveness. Results from an initial laboratory experiment support the prediction that depersonalization and group size interact as determinants of the strength of social identification.

That Still, Small Voice: Commitment to Cooperate as an Internalized Versus a Social Norm

Recent research suggests that group discussion of a social dilemma may increase cooperative behavior because group members honor the commitments they make during the group discussion. This article asks whether people honor such commitments because of the social consequences of violating them or because of the internal personal consequences of doing so. Experiment 1 replicated and extended previous research showing that the anonymity of one's cooperative/noncooperative choice does not moderate the effect of group discussion. Experiment 2 examined the possibility that commitments to cooperate were kept due to mindless adherence to a prior decision, rather than to an internalized norm. Contrary to the former possibility, enhancing mindfulness did not moderate the effect of group discussion. The scope and implications of personal norms of commitment are discussed.

Co-operation and Competition: Contributions to an Evolutionary and Developmental Model

Combining co-operation with other behaviours is hypothesised as a successful strategy for competing for resources. Studies were conducted with 4- to 8-year-olds from India, Malaysia, South Africa, and the United States. Four children were given the opportunity to view a cartoon (the resource), providing two children helped make the cartoon available to a third child for viewing, thereby relegating the fourth child to a bystanding position. The children quickly learned to co-operate, however, viewing times varied significantly between them, suggesting that they were competing against each other even while co-operating. The inequitable outcomes appear due to individual differences in the ability to combine helping others with more competitive behaviours. Children from different cultures were very similar in their behaviour as well as in their production of inequitable outcomes. These findings suggest the presence of a culturally independent strategy that could be viewed as evolutionarily stable.

Prosocial values and group assortation : Within an N-person prisoner's dilemma game

Ninety-five freshmen each recruited three peers to play a "group bidding game," an N-person prisoner's dilemma in which anyone could win movie tickets depending on their scores in the game. Prior to playing, all participants completed a measure of prosocial value orientation. Replicating and extending earlier findings (Sheldon and McGregor 2000), our results show that prosocial participants were at a disadvantage within groups. Despite this vulnerability, prosocial participants did no worse overall than asocial participants because a counteracting group-level advantage arose for prosocials, who tended to be concentrated in groups. Implications of this assortative process for the egoism/altruism debate, and for hierarchical selection theory, are discussed.

Altruistic cooperation during foraging by the Ache, and the evolved human predisposition to cooperate

This paper presents quantitative data on altruistic cooperation during food acquisition by Ache foragers. Cooperative activities are defined as those that entail a cost of time and energy to the donor but primarily lead to an increase in the foraging success of the recipient. Data show that Ache men and women spend about 10% of all foraging time engaged in altruistic cooperation on average, and that on some days they may spend more than 50% of their foraging time in such activities. The most time-consuming cooperative activity for both sexes is helping during the pursuit of game animals, a pattern that is probably linked to the widespread sharing of game by Ache foragers. Cooperative food acquisition and subsequent food redistribution in hunter-gatherer societies are critical behaviors that probably helped shape universal, evolved, cooperative tendencies that are well illustrated in modern experimental economics.

Trust matters: a cross-cultural comparison of Northern Ghana and Oaxaca groups

A cross-cultural analysis of trust and cooperation networks in Northern Ghana (NGHA) and Oaxaca (OAX) was carried out by means of ego networks and interviews. These regions were chosen because both are inhabited by several ethnic groups, thus providing a good opportunity to test the cultural group selection hypothesis. Against the predictions of this approach, we found that in both regions cooperation is grounded in personal trust groups, and that social cohesion depends on these emotional bonds. Moreover, in agreement with Fiske's notion of "evolved proclivities," we also found two distinct kinds of trust networks, one for each region, which vary in terms of the degree of ethnic interrelation. This pattern suggests that social cohesion increases when environmental resources are scarce.

Relationships between cooperation and goal orientation among male professional and semi-professional team athletes

In team sports, athletes' goals may focus on the task (enhancing performance, developing better skills, etc.) or on ego (being better than the others, achieving superiority, etc.). This study investigated the relationships between athletes' goal orientation and their tendency to cooperate with teammates and coaches. 158 professional men (M age = 24.1 yr., SD = 4.6) who played on various sport teams participated in this study. Goal orientation was measured with the Portuguese version of the Task and Ego Orientation in Sport Questionnaire, and cooperation was measured with the Questionário de Cooperação Desportiva. Cooperation was positively correlated with task orientation, and negatively correlated with ego orientation. Overall, the findings support that in sports, directing the players' focus on task may promote prosocial behavior.

The primacy of scaffolding within groups for the evolution of group-level traits

Although both a “simple dyad or a population of thousands” are groups, these are, respectively, face-to-face embodied groups and collective symbolic groups. We applaud Smaldino for recognizing and describing the concept of the group-level trait. As an expansion, we propose an evolutionary-developmental model of face-to-face groups that scaffolds theorizing the evolution of cultural group-level traits.

When do people cooperate? The neuroeconomics of prosocial decision making

Understanding the roots of prosocial behavior is an interdisciplinary research endeavor that has generated an abundance of empirical data across many disciplines. This review integrates research findings from different fields into a novel theoretical framework that can account for when prosocial behavior is likely to occur. Specifically, we propose that the motivation to cooperate (or not), generated by the reward system in the brain (extending from the striatum to the ventromedial prefrontal cortex), is modulated by two neural networks: a cognitive control system (centered on the lateral prefrontal cortex) that processes extrinsic cooperative incentives, and/or a social cognition system (including the temporo-parietal junction, the medial prefrontal cortex and the amygdala) that processes trust and/or threat signals. The independent modulatory influence of incentives and trust on the decision to cooperate is substantiated by a growing body of neuroimaging data and reconciles the apparent paradox between economic versus social rationality in the literature, suggesting that we are in fact wired for both. Furthermore, the theoretical framework can account for substantial behavioral heterogeneity in prosocial behavior. Based on the existing data, we postulate that self-regarding individuals (who are more likely to adopt an economically rational strategy) are more responsive to extrinsic cooperative incentives and therefore rely relatively more on cognitive control to make (un)cooperative decisions, whereas other-regarding individuals (who are more likely to adopt a socially rational strategy) are more sensitive to trust signals to avoid betrayal and recruit relatively more brain activity in the social cognition system. Several additional hypotheses with respect to the neural roots of social preferences are derived from the model and suggested for future research.

The group discussion effect: integrative processes and suggestions for implementation

One of the most consistent findings in experimental social dilemmas research is the positive effect group discussion has on cooperative behavior. At a time when cooperation and consensus is critical to tackle global problems, ranging from debt to deforestation, understanding the dynamics of group discussion is a pressing need. Unfortunately, research investigating the underlying processes and implementation of the effect has been inconclusive. The authors present a critical review of existing explanations and integrate these perspectives into a single process model of group discussion, providing a more complete theoretical picture of how interrelated factors combine to facilitate discussion-induced cooperation. On the basis of this theoretical analysis, they consider complimentary approaches to the indirect and feasible implementation of group discussion. They argue that such strategies may overcome the barriers to direct discussion observed across a range of groups and organizations.

The Role of Self-Image Concerns in Discrepancies Between Implicit and Explicit Self-Esteem

Four experiments examined the hypothesis that individuals who hold discrepant implicit and explicit self-esteem possess relatively strong self-image concerns. As a result, they may act irrationally when expressing sexual health attitudes. In support of the hypothesis, Experiments 1a and 1b demonstrate that large self-esteem discrepancy participants possess strong implicit self-image ambivalence relative to small self-esteem discrepancy participants. In Experiments 2 and 3, participants who varied in self-esteem discrepancies received either negative or positive (or no) feedback on an intelligence test, and then they were given an opportunity to express implicit and explicit attitudes toward condoms. Large self-esteem discrepancy participants who received a self-threat responded irrationally and expressed relatively strong negative implicit (but not explicit) attitudes toward condoms. However, this detrimental effect was completely reversed following a self-affirmation to large discrepancy participants. The implicit and explicit attitudes toward condoms of small discrepancy participants were unaffected by a self-threat or a self-affirmation.

Reactions to a social dilemma as a function of intragroup interactions and group performance

We examined how group performance (success or failure) and intragroup interactions (minimal or favorable) affected responses to a social dilemma. We predicted that group failure would result in less overall cooperation, but that favorable intragroup interactions would buffer this adverse consequence. We further predicted that this buffering effect would be mediated by group identity, which would, in turn, operate through two processes, normative expectations and goal transformation. We experimentally manipulated the extent to which groups ( N = 80 four-person groups) experienced minimal or favorable intragroup interactions and succeeded or failed on an intellective task before facing, as isolated individuals, a social dilemma. Our main hypotheses were supported, and structural equation modeling and analyses of moderated mediation were largely consistent with our theoretical model. The results support a social identity approach to social dilemmas and shed light on the processes involved in intragroup cooperation.

Physical Constraints on the Evolution of Cooperation

The evolution of psychological adaptations for cooperation is still puzzling due to a tendency to frame social interaction in mathematical and game-theoretical terms, without systematically examining its causal structure and underlying mechanisms. Complementarily, empirical approaches to cooperation tend to focus on isolated components of mechanisms without sufficiently indicating how different components are combined into a single mechanism and different mechanisms fit into a single organism. An alternative approach to the evolution of cooperation is proposed, starting from a description of basic physical properties of individuals and their environment, and the limited physical or mechanistic possibilities to generate adaptive responses to those properties. This approach reveals that some forms of symmetrical cooperation do not require mechanisms "specifically designed for" benefiting others, whereas effective helping requires a specific mechanism that relatively unconditionally and persistently responds to the vulnerability of other individuals. Unraveling the causal structure of different types of other-benefiting shows that a mechanism for asymmetrical helping may considerably improve symmetrical cooperation through properties such as tolerance, patience, and the human capacity to experience a wide variety of moral emotions. The proposed mechanistic approach to cooperation provides the mathematical/game-theoretical approach with realistic assumptions about psychological adaptations, and helps to integrate the scattered facts about mechanisms gathered by the empirical approach. It also helps to build bridges between the two approaches by providing a common language for thinking about psychological mechanisms.

Précis ofDarwin, sex and status: Biological approaches to mind and culture

Darwin, Sex and Statusargues that a human sociobiology that mistakes evolutionary theory for theories of psychology and culture is wrong, as are psychologies that could never have evolved or social sciences that posit impossible psychologies. Status develops theories of human self-awareness, cognition, and cultural capacity that are compatible with evolutionary theory. Recurring themes include: the importance of sexual selection in human evolution; our species' preoccupation with self-esteem and relative standing; the individual as an active strategist, regularly revising culturally provided information; and awareness as an impressionmanagement device. Culture is a somewhat structured information pool that itself evolves, often in ways that reduce the genetic fitness of its participants.

Framing effects: behavioral dynamics and neural basis

This study examined the neural basis of framing effects using life-death decision problems framed either positively in terms of lives saved or negatively in terms of lives lost in large group and small group contexts. Using functional MRI we found differential brain activations to the verbal and social cues embedded in the choice problems. In large group contexts, framing effects were significant where participants were more risk seeking under the negative (loss) framing than under the positive (gain) framing. This behavioral difference in risk preference was mainly regulated by the activation in the right inferior frontal gyrus, including the homologue of the Broca's area. In contrast, framing effects diminished in small group contexts while the insula and parietal lobe in the right hemisphere were distinctively activated, suggesting an important role of emotion in switching choice preference from an indecisive mode to a more consistent risk-taking inclination, governed by a kith-and-kin decision rationality.