People engage in a constant and reflexive process of categorizing others according to their race, gender, age or other salient social category. Decades of research have shown that social categorization often elicits stereotypes, prejudice, and discrimination. Social perception is complicated by the fact that people have multiple social identities and self-categorization with these identities can shift from one situation to another, coloring perceptions and evaluations of the self and others. This dissertation provides evidence that self-categorization with a novel group can override ostensible stable and pervasive racial biases in memory and evaluation and examines the neural substrates that mediate these processes. Experiment 1 shows that self-categorization with a novel mixed-race group elicited liking for ingroup members, regardless of race. This preference for ingroup members was mediated by the orbitofrontal cortex – a region of the brain linked to subjective valuation. Participants in novel groups also had greater fusiform and amygdala activity to novel ingroup members, suggesting that these regions are sensitive to the current self-categorization rather than features associated with race. Experiment 2 shows that preferences for ingroup members are evoked rapidly and spontaneously, regardless of race, indicating that ingroup bias can override automatic racial bias. Experiment 3 provides evidence that preferences for ingroup members are driven by ingroup bias rather than outgroup derogation. Experiment 4 shows that self-categorization increases memory for ingroup members eliminating the own-race memory bias. Experiment 5 provides direct evidence that fusiform activity to ingroup members is associated with superior memory for ingroup members. This study also shows greater amygdala activity to Black than White faces who are unaffiliated with either the ingroup or outgroup, suggesting that social categorization is flexible, shifting from group membership to race within a given social context. These five experiments illustrate that social perception and evaluation are sensitive to the current self-categorization – however minimal – and characterized by ingroup bias. This research also offers a relatively simple approach for erasing several pervasive racial biases. This multi-level approach extends several theories of intergroup perception and evaluation by making explicit links between self-categorization, neural processes, and social perception and evaluation.

People engage in a constant and reflexive process of categorizing others according to their race, gender, age or other salient social category. Decades of research have shown that social categorization often elicits stereotypes, prejudice, and discrimination. Social perception is complicated by the fact that people have multiple social identities and self-categorization with these identities can shift from one situation to another, coloring perceptions and evaluations of the self and others. This dissertation provides evidence that self-categorization with a novel group can override ostensible stable and pervasive racial biases in memory and evaluation and examines the neural substrates that mediate these processes. Experiment 1 shows that self-categorization with a novel mixed-race group elicited liking for ingroup members, regardless of race. This preference for ingroup members was mediated by the orbitofrontal cortex – a region of the brain linked to subjective valuation. Participants in novel groups also had greater fusiform and amygdala activity to novel ingroup members, suggesting that these regions are sensitive to the current self-categorization rather than features associated with race. Experiment 2 shows that preferences for ingroup members are evoked rapidly and spontaneously, regardless of race, indicating that ingroup bias can override automatic racial bias. Experiment 3 provides evidence that preferences for ingroup members are driven by ingroup bias rather than outgroup derogation. Experiment 4 shows that self-categorization increases memory for ingroup members eliminating the own-race memory bias. Experiment 5 provides direct evidence that fusiform activity to ingroup members is associated with superior memory for ingroup members. This study also shows greater amygdala activity to Black than White faces who are unaffiliated with either the ingroup or outgroup, suggesting that social categorization is flexible, shifting from group membership to race within a given social context. These five experiments illustrate that social perception and evaluation are sensitive to the current self-categorization – however minimal – and characterized by ingroup bias. This research also offers a relatively simple approach for erasing several pervasive racial biases. This multi-level approach extends several theories of intergroup perception and evaluation by making explicit links between self-categorization, neural processes, and social perception and evaluation.

Gossip is a little studied topic and even fewer studies have examined gossip from the perspective of social identity and self categorization theories. However, many of the functions of gossip have significant implications for group processes, including bonding, norm transmission and reinforcement, marginalization of deviants, and social influence. Particularly for those on the margins of the group, gossip may be used as a tool to gain acceptance in the group, as gossip is an effective way to express group loyalty and adherence to group norms. Study One investigated the extent to which being a prototypical member of one's group was predictive of likelihood to spread gossip. Using sororities as the group, members were presented with a hypothetical piece of gossip and asked the extent to which the member who gossiped is prototypical, how likely they would be to share the gossip with other group members, and how prototypical they perceive themselves to be of the sorority. It was predicted that peripheral group members would be more likely to spread gossip than central group members, particularly about other peripheral group members, and particularly when the information was not highly negative. Study Two was conducted in parallel, using the same methodology, but with a piece of gossip about a celebrity instead of a fellow sorority member. It was predicted that the results would mirror those of Study One and that peripheral members would be most likely to spread the gossip. While none of the stated hypotheses were supported, there were several unanticipated interactions. In both Study One and Study Two, there was a significant three-way interaction, in that a highly uncertain respondent, a prototypical target, and relatively mildly negative gossip was associated with anticipated transmission to the highest number of sorority members. While the results were unanticipated, they are not inexplicable and the implications for research in the areas of gossip, celebrity, and self categorization theory are discussed.

This thesis investigates the nature and the development of a delinquent social identity. Three issues are addressed. These concern the negative identity that results from social comparison processes in school, the role of the peer group in delinquency and the variable nature of the delinquent social identity. One argument of the thesis, which is based on the concepts of self-categorization theory, is that the delinquent social identity develops out of a negative identity because of perceived differences between groups of adolescents in the school in terms of their commitment to academic studies and their attitude towards authority. The first study in this thesis demonstrates that compared to non delinquents, delinquents are more likely to perceive their social status in the school to be low as well as stable, and are more concerned about their reputation among their peers. Also, delinquents are more likely to rationalize against guilt through the techniques of neutralization, are more likely to value unconventional norms and tend to have negative experiences, both at home and in school. Based on social identity theory, this thesis argues that delinquency arises out of a search for an alternative positive identity through " social creativity ", which is only possible through the group. Membership in a delinquent group or a delinquent social identity offers the delinquent a sense of " positive distinctiveness " which is derived from the rejection, redefinition and reversal of conventional norms. It is only through a social identity where members perceive each other as interchangeable and share an interdependency, that such a reversal receives social validation, and that members achieve a sense of self-consistency which becomes part of their reputation. The second study in this thesis confirms that delinquents show a relative preference for a group strategy of derogation of the outgroup for coping with negative social comparison, rather than one which involves an individual strategy of competition, and that this group strategy is more likely to enhance their self-esteem. Delinquents' tendency to reverse conventional norms is demonstrated in the third study of the thesis, which also revealed that this reversal is evident only when delinquents are compared to non delinquents, and that this rejection is not total. These findings not only provide support for Cohen's subcultural theory of delinquency but also that of Sykes and Matza who argue that delinquents drift in and out of such behaviours. In fact, this thesis suggests that this drift can be explained in terms of a shift in the salience of identity. Because the delinquent identity is a social identity, it is variable and context-dependent. Differences in attitudes towards authority, rationalizations against guilt and self-derogation can be explained by differences in the salience of the delinquent social identity. The last three studies of the thesis provide evidence of these variations with both self-report and incarcerated delinquents.

This thesis examines the way in which traditional accounts of gender differences in the self-concept have relied on distal explanatory factors, and have thus conceptualised the gendered self as stable across both time and situation. This notion of a stable, gendered self has been implicated as underlying of a range of psychological gender differences (e.g., Cross & Madson, 1997), such as those in moral reasoning (e.g., Gillian, 1982) and ways of knowing (e.g., Belenky et al., 1989). As a result, these behaviours are also seen to be stable across time and context.¶ An alternative perspective is investigated, which looks to social identity theory and self-categorisation theory for a conceptualisation of both gender and the self-concept as being malleable and context-dependent (e.g., Turner et al., 1987). The social identity perspective describes the way in which proximal aspects of the social context affect the expression of gender-related behaviours, attitudes, and beliefs. In this way, the social identity perspective provides an analysis of group membership, group norms, and social influence which can not only account for the differences that are observed between men and women, but can also offer an analysis of the context-dependence of these difference and an approach by which gender differences can be mollified.¶ A series of nine empirical studies are reported, investigating the way in which individuals (a) define themselves, (b) approach moral reasoning, and (c) approach knowledge and learning, across a number of different social contexts. Together, the results suggest that the self-concept, moral orientation, and ways of knowing are neither stable nor inherently gendered, but are malleable and dependent on the nature of the self-other relationship as defined by the proximal aspects of the social context. The implications for traditional theories of gender differences are discussed, as are the broader implications for feminism and social change.

This qualitative study focuses on perceptions of actors within protracted social conflicts and the value of using self-categorization as a tool to increase understanding of conflict actors as a step towards to finding alternative solutions. It compares self-perceptions of the Hilltop Youth, a radical settler group in the West Bank region in the Middle East, to categorizations used in all of the established literature on the group. Five categories that are recurring in the literature on the Hilltop Youth (terrorists, vigilantes, active flank within a social movement, gang, and activist) are contrasted with Self-Categorization theory and will be used as a tool to determine the self-image of the group as displayed in the digital and social media. The findings show that the category that finds common ground between the two perspectives is activists. The Hilltop Youth view themselves as freedom fighters, doing what they are chosen to do: settle the land, already promised to them.  Their actions and beliefs translate to political activism this both including building homes and creating outposts as well as conducting “price tag” attacks. The findings underline the difference in perceived realities between the Hilltop Youth and researchers. Concluding the need to incorporate the perspective of the actor itself in order to create a sustainable peace based on the same reality, something that have been overlooked in previous Hilltop Youth research.

This thesis examines how Palestinian ethnicity is negotiated and embodied in different contexts by young people with Palestinian background in Sweden. It is based on semi-structured interviews and uses Social Identity and Self Categorization theory. A main result is that the Palestinian ethnicity of the respondents play an essential role for their identity building, regardless of context. While being “Palestinian” is fore-fronted by all the interviewees as central to their identities, they ascribe somewhat different meanings to the concept of Palestinian-ness - what actually makes them “feel Palestinian” or can claim a Palestinian identity. Further, the interviewees’ perception of how Palestinian-ness is generally regarded in different contexts matter. Lastly, their notion of Palestinian ethnicity is strongly connected to the Palestinian territory and the historical-political situation and conflict with Israel. Together, these themes show the complexity of identity and ethnicity, however, the interviewees relation to their Palestinian background is solid.

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This thesis seeks to answer questions regarding Paul’s understanding of Christian identity by arguing that Paul views Christian identity as a superordinate or New Human identity in which many previous identities persist as subordinate identities, transformed by the superordinate Christian identity—although some previous identities must cease as they are not compatible with the superordinate Christian identity. Utilizing the combined approaches of Social Identity Theory and Self-Categorization Theory, I describe the perspectives that Paul presents in his correspondence with the Thessalonians, Galatians and Corinthians. As regards the Thessalonians, Paul observes that the Thessalonians succeeded in adopting Christian identity. In comparison, the Galatians, while recognizing their need for transforming their subordinate identities, are foolishly attempting to adopt a Judean identity. Finally, Paul rebukes the Corinthians for failing to appropriately adopt Christian identity and for choosing instead to continue to live according to their Old Human identity. / Thesis / Master of Arts (MA)

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