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The Polish Journal of Applied Psychology is primarily devoted to original investigations that contribute new knowledge and understanding to all fields of applied psychology. PJAP is mainly interested in publishing empirical articles, where quantitative as well as qualitative analyses of data enhance our understanding of individuals, groups or various social systems and have practical implications within particular contexts. Conceptual or theoretical papers may be accepted if they bring a special contribution into the field for application.
Our paper reviews research studies that have investigated interventions aimed at prejudice reduction. The theories and research results are summarized in the following categories: intergroup contact, social identity, and categorization. The intergroup contact approach inspired such techniques as contact hypothesis, jigsaw classroom, Pettigrew’s model, contact with transgression, and imagined intergroup contact hypothesis; while social identity gave the ground for common ingroup identity and crossed categorization theories. We place special emphasis on methods applicable for a school setting, and try to answer the questions: when, why and under which condition will a given method work.