Social identity as social glue: the origins of group loyalty

In 3 experiments, the authors investigated the role of social identity in fostering group loyalty, defined as staying when members can obtain better outcomes by leaving their group. In Experiment 1, high (vs. low) identifiers expressed a stronger desire to stay in the group in the presence of an attractive (vs. unattractive) exit option. Experiments 2 and 3 replicated this basic finding and tested several explanations. The results suggest that high identifiers' group loyalty is better explained by an extremely positive impression of their group membership (group perception) than by a justification of previous investments in the group (self-perception) or their adherence to a nonabandonment norm (norm perception). Hence, social identity seems to act as social glue. It provides stability in groups that would otherwise collapse.     

Individuality and social influence in groups: inductive and deductive routes to group identity

A distinction between forms of social identity formation in small interactive groups is investigated. In groups in which a common identity is available or given, norms for individual behavior may be deduced from group properties (deductive identity). In groups in which interpersonal relations are central, a group identity may also be induced from individual group members' contributions, making individuality and individual distinctiveness a defining feature of the group (inductive identity). Two studies examined the prediction that depersonalization produced by anonymity has opposite effects for groups in which social identity has been induced or deduced. Results confirmed the prediction that depersonalization increases social influence in groups whose identity was more deductive. In contrast, depersonalization decreases social influence in inductive identity groups. Implications for the role of social identity in small groups are discussed. ((c) 2005 APA, all rights reserved).     

Self-uncertainty,social identity prominence and group identification

Drawing on uncertainty-identity theory (Hogg, 2007) and referring to the concept of social identity complexity, we conducted two experiments to test the hypothesis that people would identify most strongly with their group if they felt both self-uncertain and that their group's identity was prominent relative to other identities, either because it was distinct from other identities or because they had few other identities. Self-uncertainty was primed in both experiments after participants had been primed to consider their group's attributes to overlap with or be distinct from the attributes of other identities of theirs (Experiment 1, N = 90) or to consider few or multiple other identities they had (Experiment 2, N = 87). As predicted, group identification was strongest under high uncertainty and when identity distinctiveness or few other identities had been primed. Implications of this research for how we conceptualize identity complexity are discussed.     

社会身份重要性和社会认同对群体参照效应的影响

研究选取四个参照条件（国家、民族、性别、职业）,探讨个体内部的社会身份重要性、以及个体对其不同社会身份的社会认同度对群体参照效应的影响。结果表明,在个体内部,社会身份重要性越重要,相应的群体参照效应也越大,而社会认同的高低对群体参照效应的大小没有显著影响。这表明在个体的自我内部,不同的社会身份是按照重要性来排列,越重要身份越靠近个体自我概念的核心,而且这种重要性也影响着集体自我相关信息的认知加工。     

Us versus them: social identity shapes neural responses to intergroup competition and harm

Intergroup competition makes social identity salient, which in turn affects how people respond to competitors' hardships. The failures of an in-group member are painful, whereas those of a rival out-group member may give pleasure-a feeling that may motivate harming rivals. The present study examined whether valuation-related neural responses to rival groups' failures correlate with likelihood of harming individuals associated with those rivals. Avid fans of the Red Sox and Yankees teams viewed baseball plays while undergoing functional magnetic resonance imaging. Subjectively negative outcomes (failure of the favored team or success of the rival team) activated anterior cingulate cortex and insula, whereas positive outcomes (success of the favored team or failure of the rival team, even against a third team) activated ventral striatum. The ventral striatum effect, associated with subjective pleasure, also correlated with self-reported likelihood of aggressing against a fan of the rival team (controlling for general aggression). Outcomes of social group competition can directly affect primary reward-processing neural systems, which has implications for intergroup harm.     

Coping with a threatened group identity: Psychosocial and neuroendocrine responses

Given the stress associated with belonging to a socially devalued group, members' reactions to a threat were evaluated within a stress and coping framework. Participants (N=72) were presented with an explicit or nonexplicit (positive vs. neutral cues) threat to a devalued identity. Regressions indicated that problem-focused coping was related to appraising the identity threat as controllable, and with a greater sense of optimism. Together these variables were associated with lower salivary cortisol levels. The role of emotion-focused coping was most evident under explicit threat conditions, such that it was associated with sustained cortisol elevations and a diminution of identity importance. The findings suggest that intergroup responses involve a complex interplay among stressor appraisals and coping propensities.     

The development of in-group favoritism: between social reality and group identity

This study examined how social reality restricts children's tendency for in-group favoritism in group evaluations. Children were faced with social reality considerations and with group identity concerns. Using short stories, in this experimental study, conducted among 3 age groups (6-, 8-, and 10-year-olds), the authors examined the trait attribution effects of reality constraints on eye-color differences and national group differences. The results show that the trait attributions of all age groups were restricted by the acceptance of socially defined reality. In addition, when the information about reality was not considered accurate, only the youngest children showed positive in-group favoritism. It is argued that these findings are useful in trying to reconcile some of the divergent and contrasting findings in the developmental literature on children's intergroup perceptions and evaluations.     

A social identity approach to trust: interpersonal perception,group membership and trusting behaviour

Trusting behaviour involves relinquishing control over outcomes valuable to the self. Previous research suggests that interpersonal perceptions of trustworthiness are closely related to this behaviour. The present research suggests that the more proximal determinant of trusting behaviour is the expectation that the other will reciprocate. Based on the Social Identity model of Deindividuation Effects (SIDE) model, reciprocity expectations may be created by interpersonal perceptions of trustworthiness or a shared group membership. To investigate this, group membership and individual identifiability were experimentally manipulated (N = 139): When individuals were not identifiable, trusting behaviour was based on expectations of reciprocity inferred from group membership, not on perceived trustworthiness. In contrast, personal identifiability fostered perceptions of trustworthiness for both in‐ and out‐group members. In this case interpersonal trustworthiness enhanced expectations of reciprocity, which in turn increased trusting behaviour. Copyright © 2005 John Wiley & Sons, Ltd.     

Group status is related to group prototypicality in the absence of social identity concerns

Based on self-categorization theory, group status should be positively related to group prototypicality when the relevant superordinate category is positively valued. In this case, high-status groups should be perceived to be more prototypical than low-status groups even in the absence of concerns about maintaining a positive social identity. To test this hypothesis, a minimal group study was conducted in which participants (N = 139) did not belong to any of the groups involved. Consistent with predictions, participants perceived high-status groups to be significantly more prototypical than low-status groups. Consistent with self-categorization theory's cognitive analysis, these results demonstrate that the relation between group status and group prototypicality is a relatively basic and pervasive effect that does not depend on social identity motives.     

Entitativity and social identity complexity: The relationship between group characteristics and personal characteristics on group identification

The current study extends previous works on group identification by focusing on how social identity complexity and entitativity interact to impact group identification. The purpose of the current study is to test the hypothesis that people with a simple social identity identify more strongly with a highly entitative group and people with complex social identity identify more strongly with a group low in entitativity. Participants’ social identity complexity and entitativity about a group were manipulated, and with that group was measured. Results demonstrated that participants primed with a simple social identity identified more strongly with a more highly entitative group, whereas identification with the high and low entitativity groups did not differ for participants primed with a complex social identity.     

Developing the social identity theory of leadership: Leader agency in leader group prototypicality

The social identity theory of leadership is a unique perspective in leadership research in capturing how responses to leadership are informed by how the leader is perceived through the lens of the group identity shared by leaders and followers. I review the theory in broad strokes to make the case that a particularly valuable future development of the theory is to complement the theory's emphasis on group member (follower) perceptions of leader group prototypicality, the extent to which the leader is perceived to embody the group identity, with theory and evidence speaking to leader agency in influencing such perceptions.     

From "in the air" to "under the skin": cortisol responses to social identity threat

The authors examined women's neuroendocrine stress responses associated with sexism. They predicted that, when being evaluated by a man, women who chronically perceive more sexism would experience more stress unless the situation contained overt cues that sexism would not occur. The authors measured stress as the end product of the primary stress system linked to social evaluative threat-the hypothalamic-pituitary-adrenal cortical axis. In Study 1, female participants were rejected by a male confederate in favor of another male for sexist reasons or in favor of another female for merit-based reasons. In Study 2, female participants interacted with a male confederate who they learned held sexist attitudes or whose attitudes were unknown. Participants with higher chronic perceptions of sexism had higher cortisol, unless the situation contained cues that sexism was not possible. These results illustrate the powerful interactive effects of chronic perceptions of sexism and situational cues on women's stress reactivity.     

Diversity in the person,diversity in the group: Challenges of identity complexity for social perception and social interaction

Social psychological research is increasingly coming to grips with the complexity of social identity within the individual, both from the perspective of perceivers trying to form impressions and make judgments about multiply categorizable targets, as well as from the perspective of actors using their different self‐aspects as a framework for guiding their interactions with the social world. I review several contributions to the effort to better understand these issues and then explore some of their possible implications for understanding the nature and consequences of diversity within the group. Copyright © 2009 John Wiley & Sons, Ltd.     

Individual,social group and intergroup behaviour. Some conceptual remarks on the social identity theory

An investigation of the group concept proposed by Tqjfel and Turner shows that group formation and intergroup behaviour cannot be explained by the similarity of group members. Taking into account only similarity of elements leads to conceptual contaminations concerning group and class, group and collective, personal and social identity, and finally interpersonal and intergroup behaviour. It is claimed that only the consideration of group structure and the differentiation of partially individual and partially structural attributes of the group members results in a conceptually adequate theory of group formation and intergroup behaviour of its members.     

Strategies to cope with negative social identity: predictions by social identity theory and relative deprivation theory

Predictions by social identity theory (SIT) and relative deprivation theory (RDT) concerning preferences for strategies to cope with a negative in-group status position were tested. The focus of the present research was a comparison of the theories regarding their differential patterns of prediction. For this purpose, a natural sample within a specific historical situation was investigated: East Germans after the German unification. First, the predictive power of SIT and RDT variables was tested separately. In a second step, a possible integration of the theories was addressed. Combining the SIT variables and RDT variables led to an integrated model indicating a differential pattern of prediction for intergroup strategies. The RDT components explained the collective responses, whereas SIT constructs were related to individual strategies.     

Responding to negative social identity: a taxonomy of identity management strategies

Taken from literature on social identity theory and social comparison theory, 12 strategies of identity management were identified as possible responses to negative social identity. A taxonomy with two orthogonal axes is proposed as theoretical organization of these diverse strategies. While the first axis considers responses as being either individual or collective, the second axis refers to the distinction between behaviours and cognitions. It is assumed that the German unification process implied a lower status position of East Germans relative to West Germans on relevant comparison dimensions, and that East Germans have to deal with this threat to their identity. Hence, data of an East German sample are used to empirically systematize identity management strategies, and, thus, to test the proposed taxonomy. Results support the expected four-factor solution only for those strategies taken from social identity theory, while the responses derived from social comparison research build a fifth factor. In addition, the empirical assignments of strategies to cells of the taxonomy are only partly in line with the expected pattern. The empirical findings suggest some clarification and modifications of the proposed response taxonomy. The most important refers to a re-interpretation of the taxonomy's first axis, which now differentiates between responses according to the specific changes of the comparison parameters they imply. © 1998 John Wiley & Sons, Ltd.     

Perceptions of group homogeneity as a function of social comparison: The mediating role of group identity

Recent research has shown that creating an intergroup context of comparison may influence the outgroup homogeneity effect or even turn it into an ingroup homogeneity effect. In the present study, the aim was to replicate these findings by using overall judgment of similarity instead of the more commonly used dimensional ratings. Further, and more importantly, it was argued that this effect could be explained by an increase in the salience of participants’ group identity. The results showed that context of comparison revealed an effect on both level of group identification and perceptions of relative ingroup and outgroup homogeneity. In line with predictions, participants’ level of group identification seemed to account for the effect of the comparison context on the homogeneity ratings.     

Suffering from the possibility of status loss: Physiological responses to social identity threat in high status groups

In this research, we examine the emergence of social identity threat among members of high status groups, by assessing physiological responses to threat in addition to more traditional (self‐report) measures. We argue that physiological measures are better suited than explicit responses to indicate the emergence of social identity threat when high status groups face the possibility of future group status loss. In Experiment 1, members of an experimentally created high status group displayed higher systolic blood pressure (SBP) and pulse pressure (PP) when inter‐group status differences were unstable than when they were stable, even though participants in both conditions reported identical levels of collective self‐esteem. In Experiment 2, only male participants (i.e., high status group members) displayed increased SBP and PP when discussing changing gender–status relations in society, particularly when this happened in an inter‐group context (i.e., when discussing with females). The increased threat that emerged under these conditions could not be inferred from self‐reported inter‐group perceptions (endorsement of sexism). We conclude that whereas self‐report measures can help assess how high status group members perceive the current inter‐group situation, physiological measures are needed to reveal the social identity threat they experience when they anticipate the possibility for future change in inter‐group relations. Copyright © 2009 John Wiley & Sons, Ltd.     

Perceptions of group homogeneity as a function of social comparison: The mediating role of group identity

Recent research has shown that creating an intergroup context of comparison may influence the outgroup homogeneity effect or even turn it into an ingroup homogeneity effect. In the present study, the aim was to replicate these findings by using overall judgment of similarity instead of the more commonly used dimensional ratings. Further, and more importantly, it was argued that this effect could be explained by an increase in the salience of participants’ group identity. The results showed that context of comparison revealed an effect on both level of group identification and perceptions of relative ingroup and outgroup homogeneity. In line with predictions, participants’ level of group identification seemed to account for the effect of the comparison context on the homogeneity ratings.