Thesis (Ph.D)--Boston University.This study is concerned with an investigation of hostile expression and Jewish group identification. The design of the study included the development and factor-analysis of a scale of Jewish identification. Specifically, the study dealt with four main issues: the relationship between Jewish group identification and the expression of hostility, a comparison of hostile expression in Jews and non-Jews, an investigation of the multi-dimensionality of Jewish group identification, and a study of the relationship between the derived factors of Jewish identification and the expression of hostility. [TRUNCATED