The authors studied organic brain syndrome, using organic brain syndrome scale of the Diagnostic Interview Schedule for DSM-Ⅲ, in the subjects of 65 males and 231 females at the homes for the aged in the Taegu and Kyong-buk areas. The authors collected the data during the period from June to August, 1986, and applied ANOVA and x²-test in order to compare various psychologic factors in relation to the organic brain syndrome. The results could be summarized as follows: The elderly males (15%) showed high OBS scores of 12 and over, while ninety elderly females (39%) showed the same scores. Among those psychosocial factors, age, education, birth place, occupation, religion, history before institutionalization are significantly related to the OBS scores.