Psychometric Properties of the Persian Version of the Five-Factor Narcissism Inventory-Short Form (FFNI-SF)

Objective: For a long time, it was held that narcissism had two aspects: narcissistic grandiosity and narcissistic fragility. The extraversion, neuroticism, and antagonism elements of the three-factor narcissism paradigm, on the other hand, have gained popularity in recent years. Based on the three-factor framework of narcissism, the Five-Factor Narcissism Inventory-short form (FFNI-SF) is a relatively recent invention. Therefore, this research aimed to assess the validity and reliability of the FFNI-SF in Persian among Iranians. Method : Ten specialists (with Ph.D.s in psychology) were enlisted in this research to translate and evaluate the reliability of the Persian version of the FFNI-SF. The Content Validity Index (CVI) and the Content Validity Ratio (CVR) were then used to assess face and content validity. It was given to 430 students at Azad University, Tehran Medical Branch, once the Persian form was completed. The available sampling technique was used to choose the participants. Cronbach's alpha and the test-retest correlation coefficient were used to assess the reliability of the FFNI-SF. In addition, concept validity was obtained using exploratory factor analysis. In addition, correlations with NEO Five-Factor Inventory (NEO-FFI) and Pathological Narcissism Inventory (PNI) were employed to establish the convergent validity of the FFNI-SF. Results: According to professional opinions, the face and content validity indices met expectations. With Cronbach's alpha and test-retest reliability, the questionnaire's reliability was also established. Cronbach's alphas varied between 0.7 and 0.83 for the FFNI-SF components. According to test-retest reliability coefficients, the components' values varied from 0.7 to 0.86. Additionally, three factors (extraversion, neuroticism, and antagonism) were recovered using the principal components approach and a straight oblimin rotation. According to an analysis of the eigenvalues, the three-factor solution accounted for 49.01 of the variation in the FFNI-SF. The eigenvalues for the three variables were 2.95 (M = 1.39), 2.51 (M = 1.3), and 1.88 (M = 1.24) respectively. The FFNI-SF Persian form's convergent validity was further verified by the association between its results and those from the NEO-FFI and PNI tests and the FFNI-SF. There was a substantial positive association between FFNI-SF Extraversion and NEO Extraversion (r = 0.51, P ≤ 0.001), as well as a strong negative correlation between FFNI-SF antagonism and NEO agreeableness (r = -0.59, P ≤ 0.001). As well as this, PNI grandiose narcissism (r = 0.37, P ≤ 0.001) was shown to be significantly associated with FFNI-SF grandiose narcissism (r = 0.48, P ≤ 0.001), as it was with PNI vulnerable narcissism (r = 0.48, P < 0.001). Conclusion: with its solid psychometric qualities, we may utilize the Persian FFNI-SF to test the three-factor model of narcissism as an effective tool for research.