The study of factor structure, validity and reliability of the Zuckerman - kuhlman Personality Questionnaire (ZKPQ-50-CC)

Aim and The Zuckerman – Kuhlman Personality Questionnaire is an instrument measuring personality traits. It is designed according to Zuckerman’s Alternative Five Factor Personality Model (FFM). The present research aimed at investigating the psychometric properties of a version of the Zuckerman – Kuhlman Personality Questionnaire which contains 50 items.Method and Materials: The research design was descriptive correlational. The sample, including 508 individuals (308 females and 200 males), were selected and tested via stratified random sampling from among the students of Azerbaijan Shahid Madani University. To analyze the factor structure of the questionnaire, exploratory factor analysis method was used and its principal components were examined. Discriminant and Concurrent validity and Test-Retest reliability, Alpha Cronbach, Split-Half and ICC (Intraclass Correlation Coefficient) were also used. Questionnaire’s Test-Retest reliability coefficient proved to be 0.79. Alpha Cronbach, Split-Half coefficient, and ICC proved to be 0.64, 0.68 and 60/0 (p<0.000) respectively. The five following factors were extracted via exploratory factor analysis with Varimax Rotation: Neuroticism – Anxiety, Sensation Seeking, Activity, Sociability and Aggression – Hostility. Concurrent Validity of the Questionnaire has been studied through correlational analysis with EPQ. The Results demonstrated a correlation between ZKPQ-50-CC and EPQ. The result of discriminant validity demonstrated that ZKPQ and its factors (except the Activity factor) could thoroughly distinguish those who obtained high mark from those who obtained low mark in N,E,P factors of Eysenck's questionnaire. The Results indicate that the Zuckerman – Kuhlman Personality Questionnaire (ZKPQ-50-CC) enjoys desirable psychometric properties in Iranian society and can be used in psychological researches.