Boyce P, Parker G, Hickie I, Wilhelm K, Brodaty H, Mitchell P
Mood Disorders Unit, Prince Henry Hospital, Little Bay, NSW, Australia.
Am J Psychiatry. 1990 Nov;147(11):1476-83. doi: 10.1176/ajp.147.11.1476.
Seventy-five patients with remitted depression were categorized as having melancholic-endogenous or non-melancholic-nonendogenous depression according to DSM-III criteria, Research Diagnostic Criteria, and the Newcastle endogeneity scale. The patients' scores on four personality scales--the Eysenck Personality Inventory, the Interpersonal Dependency Inventory, locus of control, and the Interpersonal Sensitivity Measure--were then compared. Patients with nonmelancholic-nonendogenous depression were generally rated as having more vulnerable personality styles, but the differences were dependent on the particular diagnostic system used. A principal components analysis isolated three underlying personality constructs--dependency, introversion, and timidity. Patients with nonmelancholic-nonendogenous depression scored as significantly more dependent.
