An analysis was made to determine the degree to which the pattern among psychiatric symptoms is determined by known differences in raters of these symptoms. Ratings were made by 2 psychiatrists whose background and interests were different. "Clusters revealed by the 2 analyses were mutually consistent and similar to the clusters which have been found originally in large samples of patients rated by a variety of psychiatrists. These data do not challenge a claim that the qualitative behavioral significance of the cluster scores used in the quantified multiple diagnosis is relatively independent of ordinary differences between psychiatrists." (PsycINFO Database Record (c) 2006 APA, all rights reserved)