On the basis of a new heuristic model of anti-Semitism, researchers are able to distinguish between new and old aspects of anti-Semitic attitudes. The results of two studies suggest that anti-Semitism in Germany contains very different aspects and the data fit the new theoretical model. Both traditional aspects, like "manifest anti-Semitism," as well as new forms of anti-Semitic attitudes, like "latent anti-Semitism," "rejection of responsibility for Jews," "anti-Israeli attitudes," and "anti-Zionism," were found. Furthermore, we identified various anti-Semitic attitudes with different predictive elements. Individuals with extreme anti-Semitic attitudes differ significantly from those without anti-Semitic attitudes with regard to the extent of authoritarianism, readiness for violence, approval of the repetition of National Socialism, and political orientation. The comparison between the two general concepts, authoritarianism and social dominance orientation, demonstrated that authoritarianism has greater utility in explaining separate aspects of old and new anti-Semitic attitudes. The implications of these findings are discussed.