A great deal of research has been devoted to explaining the causes of Right-Wing Authoritarianism (RWA). Explanatory models focused on either personality of social threat as the cause of RWA while more recent approaches have begun to integrate both sets of factors into more integrative models. This book outlines a more comprehensive collective security motivation model that integrates most of these approaches and reports on two empirical tests of this model. Structural equation modeling analyses partially supported the model's assumptions. It was concluded that the findings seem consistent with a simplified model, similar to Duckitt's (2001) Dual Process Model, that proposes two main determinants of authoritarian attitudes - personality and threat. This book delivers important insights into current theorizing on authoritarianism and should be of relevance to any scholar or student interested in the causes of authoritarianism.