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Dive into the research topics where Tirza Leader is active.

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Featured researches published by Tirza Leader.


Journal of Personality and Social Psychology | 2009

Complexity and valence in ethnophaulisms and exclusion of ethnic out-groups: what puts the "hate" into hate speech?

Tirza Leader; Brian Mullen; Diana R. Rice

Ethnophaulisms (A. A. Roback, 1944) are the words used as ethnic slurs to refer to out-groups in hate speech. The results of previous archival research have suggested that it is the complexity, more so than the valence, of ethnophaulisms that predicts the exclusion of ethnic immigrant out-groups from the receiving society. This article reports the results of 3 experimental examinations of the relative contributions of complexity and valence in ethnophaulisms to the exclusion of an ethnic out-group. Experiment 1 demonstrated that exclusion of the ethnic out-group was increased by the use of low-complexity ethnophaulisms. Experiment 2 demonstrated that exclusion of the ethnic out-group decreased by the use of high-complexity ethnophaulisms. Experiment 3 confirmed the demonstration that exclusion decreased by the use of a different set of high-complexity ethnophaulisms. The results of these three experiments converge to indicate that low complexity exerts more of an effect than negative valences on the exclusion of an ethnic out-group. The implications of these results for theoretical approaches to intergroup behavior are considered.


Group Processes & Intergroup Relations | 2008

Prospects for Group Processes and Intergroup Relations Research: A Review of 70 Years' Progress

Georgina Randsley de Moura; Tirza Leader; Joseph Pelletier; Dominic Abrams

Three archival analyses are presented substantially extending empirical reviews of the progress of group-related research. First, an analysis of social psychological research from 1935 to 2007 (cf. Abrams & Hogg, 1998) showed that group-related research has a steadily increasing proportion of titles in the principal journals and currently accounts for over a sixth of all the research in our list of social psychological journals. Second, analysis of the most cited papers from a set of principal social psychology journals from 1998 to 2007 showed that a third of high-impact articles in social psychology focus on groups. Third, analysis of the content of two major specialist journals in the field, Group Processes & Intergroup Relations and Group Dynamics: Theory, Research, and Practice, showed that together these journals cover a broad range of group-related research, and that the only keyword common to both journals was social identity. These findings demonstrate the health and major contributions of research into group processes and intergroup relations to social psychology as a whole.


Personality and Social Psychology Bulletin | 2007

Without Mercy: The Immediate Impact of Group Size on Lynch Mob Atrocity

Tirza Leader; Brian Mullen; Dominic Abrams

Two independent research traditions have focused on social contributions to lynching. The sociological power threat hypothesis has argued that lynching atrocity will increase as a function of the relative number of African Americans. The psychological self-attention theory has argued that lynching atrocity will increase as a function of the relative number of mob members. Two series of analyses (one using newspaper reports and the second using photographic records) using different and nonoverlapping samples of lynching events rendered a consistent pattern of results: Lynch mob atrocity did not increase as a function of the relative numbers of African Americans in the county population but it did increase as a function of the relative numbers of mob members in the lynch mob. Discussion considers the implications of these results.


Psychology Crime & Law | 2012

Ward and Siegert's Pathways Model of child sexual offending: a cluster analysis evaluation

Theresa A. Gannon; Rebecca Terriere; Tirza Leader

In the Pathways Model of child sexual offending, Ward and Siegert originally hypothesised the existence of five pathways or subtypes of child molesters, each characterised by a unique configuration of psychological deficits. We administered a battery of 10 psychometric measures to a sample of 97 UK child molesters and then attempted to identify and validate five unique configurations using a k-means cluster analysis. The results suggested that a five-cluster resolution provided the best fit for the data. Three of the extracted clusters showed some resemblances to the pathways originally hypothesised by Ward and Siegert (namely the intimacy deficits, antisocial cognition, and multiple dysfunction pathways). However, two clusters did not fit comfortably with any of the predicted pathways proposed by Ward and Siegert. These two clusters were labelled ‘impulsivity’ and ‘boy predators’ to reflect their psychological vulnerabilities. We describe our findings with reference to future research, treatment implications, and a tentative reworking of the pathways model.


Journal of Personality and Social Psychology | 2007

A Social Psychological Study of Ethnonyms: Cognitive Representation of the In-Group and Intergroup Hostility

Brian Mullen; Rachel M. Calogero; Tirza Leader


On the Nature of Prejudice: Fifty Years after Allport | 2008

Chapter 12. Linguistic Factors: Antilocutions, Ethnonyms, Ethnophaulisms, and Other Varieties of Hate Speech

Brian Mullen; Tirza Leader


Archive | 2005

Linguistic factors: Antilocution, ethnophaulisms, ethnonyms, and other varieties of hate speech.

Brian Mullen; Tirza Leader


Archive | 2009

Black role models: which messages work? Testing the impact of role models’ messages for Black boys and Black young men: research to inform the REACH role model programme

Dominic Abrams; Tirza Leader; Adam Rutland


Archive | 2009

Language and inter-ethnic relations: I know you are but what am I?

Tirza Leader; Brian Mullen; Rachel M. Calogero; Diana R. Rice


Archive | 2009

Project Sphinx: Final report

Tirza Leader; Dominic Abrams

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