Is anti-Semitism a homogeneous construct?

The present paper investigates how the distinction of different facets of anti-Semitism is to be understood from a methodological point of view. Does it mean that there is a unique (quantitative) dimension of anti-Semitism on which the participants can be ordered due to a variety of expressions of anti-Semitic prejudice, or does it imply that these facets are independent dimensions of anti-Semitism, which combine themselves into (qualitatively) different syndromes of anti-Semitism? After discussing various methodological approaches to the analysis of homogeneity vs. inhomogeneity of tests or questionnaires, the paper applies these methodologies to data from an anti-Semitism survey by Petzold (2004) and comes to the conclusion that the facets are no independent constructs. All of them are indicators of one and the same anti-Semitic attitude whose expression is partly modified during the strengthening of anti-Semitic prejudice, however.