ABSTRACT
Dermatoglyphic patterns were read by direct vision and recorded for 48 aggressive and depressed students in both sexes and compared with 60 controls. Also, blood groups determination was carried out to all of the students. The results showed significant differences which could be summarized as followed: Increased frequency of loops in the finger tips of aggressive, increased frequency of intermediate displacement of axial tri-radius [t'] in both aggressive and depressed persons, increased frequency of distal displacement of axial tri-radius [t"] in male aggressive and in depressed males and females, the hypothenar pattern of aggressive was higher in whorls and loops; while in depressed persons was higher in arches, Sydney line was frequently observed in female aggressive and in depressed persons in both sexes and there was higher frequency of blood group A among aggressive; while blood group O was higher in frequency in depressed persons