The authors studied Psychoticism, using SCL-90, in the subjects of 3,893 male college students and 1,976 female college students of Yeung Nam University, collecting data during the periods from October to November, 1984. The results could be summarized as follows: 1. There was significant difference in the mean averages of total psychoticism scores between male and female students; male students scored 6.81±5.13 female students scored 8.14±5.05. 2. Eighty eight male students (2.4%) showed seriously high psychoticism scores of 20 or higher, while 63 female students (3.2%) showed the same scores. 3. In a comparison between male students in different school grades, freshmen showed the highest level of psychoticism scores, and as the grades of students became higher, the levels of psychoticism scores were lower. 4. Among the psychoticism factors, there were strong tendencies toward higher psychoticism scores in the students who were dissatisfied with their college, and had pessimistic views of self-image in the past, present or future, in both groups. 5. The male students whose educational fees were paid by their parents, and whose spending money per month was under 10,000 won, showed higher level of psychoticism scores. 6. The female students whose maturation locations were city, who were dissatisfied with their departments, who resided in dormitory of other residencies, and whose educational fees were paid by their brothers or sisters, showed higher level of psychoticism scores. 7. The items relating to 5 (Feeling lonely with people) 9 (Never feeling close to another) 10 (Idea something writh mind) in psychoticism and the item of depressed affect in SDS were significantly correlated over 0.40 of correlation coefficient.