Study of Reliability and Validity of the Buss and Perry's Aggression Questionnaire

The aim of this study was to measure the reliability and validity of the Buss and Perry's Aggression Questionnaire. This ques-tionnaire includes 29 questions which was used by psychologists after being translated to Farsi. In a cross-sectional study 492 18-22 years old students (248 male, 244 female) from Shiraz University, who were selected using the random-cluster sampling method, were evaluated using the Buss and Perry's Aggression Questionnaire. Data were analyzed using correlation coefficient, factor analysis and t-test. Using factor analysis, the four factors of anger, physical and verbal aggression, resentment and suspicion were extracted. The test-retest reliability of this questionnaire was 0.78. Also, the comparison of these factors between males and females revealed that males scored significantly higher at anger (p<0.001), aggression (p<0.001) and suspicion (p<0.01). In addition, the high correlation of the factors with the total score of the questionnaire, the weak correlation of factors with each other and alpha coefficient scores is an indication of the adequacy and the practicality of this questionnaire for being used by researchers, professionals and psychologists in Iran. Buss and Perry’s Aggression Questionnaire has appropriate validity and reliability for being used by researchers and professionals.