Factor analysis of the DSM-III personality disorder clusters: a replication.

The authors describe the replication of Kass et al.'s study where a factor analysis of scaled ratings of DSM-III personality disorders yielded groupings similar to those described in DSM-III. In this replication the authors used scaled ratings from a nationwide sample of psychiatrists on 358 patients. The authors conclude that this replication lends additional support for the DSM-III (now DSM-III-R) approach towards grouping personality disorders into three (or four) clusters.