Findings of a study of sane aspects of personality patterns of different groups of university students studying sciences are presented. Aspects measured are neuroticism and extroversion. The EPI and KNPI are used for the purpose. 60 students each of medicine, engineering, physics, chemistry, mathematics, physiology and psychology studying during the year 1970 are taken. Usual trend of the findings is that males are less neurotic than females. The difference between males and females is significantly higher in case of students of medicine (p=.01). Students of mathematics and chemistry are found to be significantly more neurotic on Duncan's range test (p=.05). No definite conclusion regarding cause of difference is given, because the topic involves many interrelated problems, solution of which demands further experimentation. Need for such work is emphasized.