The present study aims at explaining individual differences in self-reported political violence. We integrate key concepts from the field of criminology that are conceptually related to social identity theory (Flemish identity, feelings of group superiority, and ethnocentrism) and the dual process model on prejudice (perceived injustice, perception of threat, and right-wing authoritarianism). In our model, social identity concepts are hypothesized to play a mediating role between mechanisms derived from the dual process model and political violence. To test the integrated model, a model was run for testing the strength of direct and indirect effects of perceived injustice, authoritarianism thrill-seeking behavior, feelings of superiority, Flemish nationalism, ethnocentrism, right-wing extremist beliefs, and exposure to racist peers on political violence. The analyses are based on a web survey ( N = 723) among adolescents and young adults in Flanders, Belgium. Results indicate that social identity variables play an important mediation role between perceptions and ideological attitudes related to injustice, and political violence. The main path revealed by our study is that perceived injustice may result in heightened perceptions of threat, which in turn positively influence levels of right-wing authoritarianism. Mediated by ethnocentrism, this variable has a significant and positive effect on right-wing beliefs, which in turn has a positive effect on political violence.

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Background: Evolutionary theory suggests prejudice may be a result of the evolution of human sociality. In this study, we investigate this claim by integrating theoretical insights of evolutionary theory with the well-established social psychological research on prejudice centering on Right Wing Authoritarianism (RWA) and Social Dominance Orientation (SDO) as the main predictors of prejudice.Method: First, we developed two different signaling scales, probing respondents' propensity to signal group commitment in a genuine or deceptive way. We administered a questionnaire consisting of the two signaling measures, RWA, SDO and prejudice measures to 1380 students. Analysis of the data was done using structural equation modeling.Results: Our results indicate that genuine signaling of one's commitment to the in-group is positively associated with RWA, and that deceptively signaling one's commitment to the in-group is positively associated with SDO. Both RWA and SDO are positively related to prejudice. Conclusion:Our study is the first to empirically reveal the pro-social roots of prejudice using classical measurement instruments. The findings give rise to a new array of research questions.

Whilst statistics take up a prominent place in the social science research toolkit, some old problems that have been associated there with have not been fully resolved. These problems include bias through the inclusion of irrelevant variation and the exclusion of relevant variation, which may lead to hidden and spurious correlations in more extreme—however not at all unthinkable—cases. These issues have been addressed by Ragin by building a case for the usage of fuzzy set theory in social science. In this paper, we take a complementary view, insofar as we incorporate fuzzy set theory in current statistical analyses. Apart from shedding new light on the main issues associated with (population based) statistics, this approach also offers interesting prospects for the falsification of theories - rather than single relations between variables - in the social sciences