Investigation the Psychometric Properties of Buss and Perry Aggression Questionnaire: In Non-Clinical Group

The Buss and Perry Aggression Questionnaire (BPAQ) is a widely used self-reported measure of trait aggression. The aim of this study was investigating the psychometric properties of Buss–Perry Aggression Questionnaire by using confirmatory factor analysis. Sample size of 591 students in Tehran were selected by stratified multiphase cluster sampling. To calculate the convergent validity of BPAQ, Multidimentional student’s Life Satisfaction Scale (1994) and Body Image Concern Inventory (2005) were implemented. Confirmatory factor structure for the first-order approach to BPAQ estimated using weighted least squares (WLS) criteria for assessing the adequacy of the data model with RMR, RMSEA, CFI, AGFI, GFI, 2c, / df2  and 2   used. Cronbach's alpha coefficient of BPAQ was above 0.70 and the limit was satisfactory. Factor structure of the BPAQ after the first time using confirmatory factor analysis was confirmed. Correlation coefficient analysis showed that BPAQ is a significant negative relationship with Multidimentional student’s Life Satisfaction Scale and significant positive relationship with Body Image Concern Inventory which shows the convergent validity. A single first-order factor structure of BPAQ were better fit with the observed data. Confirmatory factor structure, reliability and validity of the BPAQ for research applications and clinical diagnostics were within acceptable limits.