Abstract: The aim of the study is to examine and compare the amount of aggression between the athlete and
non-athlete students in Islamic Azad universities. The sample was comprised of all the students of Islamic Azad
University in Mazandaran province of Iran (2006-2007). The data sampling consist of 270 athlete students and
380 non-athlete ones who were chosen by cluster sampling. Measurement tools were the AGQ questions with
which psychological characteristics were made by using analytic factors. The AGQ measurement is a self pencil
and paper reporting which contains 30 close-ended questions based on 4 degree Likert measurement. The
questions were calculated to be %82 using Cronbach’s alpha coefficient. In the analysis of the data, the
inferential and descriptive statistics were used. The analysis of the data shows the average amount of
aggression was lower among the athlete students than non-athlete ones But there were no significant deference
(P<0.05) among them. The average analysis showed that there is no significant difference at between the
average aggression level of athlete students and non-athlete both in girls and boys (P< 0.05).