Enneagram Personality Inventory Development and Determination of Turkey Psychometric Properties

The purpose of this study is to develop the original Enneagram Turkey Personality Inventory and the validity and reliability studies in Turkey sample. The inventory was applied to 1110 people in 723 women (65.13%) and 387 men (34.86%) aged between 17-62 (23.23 ± 6.51) in 3 stages. Enneagram Turkey Inventory, for each subscale index profile is an inventory such as MMPI is subjected to principal components analysis in accordance with its varimax rotation. As a result of the factor analysis, the final form of the inventory with 54 questions in 9 sub-factors was developed. In the development process of the scale, Lawshe analysis, exploratory factor analysis, reliability analysis, test-retest and convergent validity studies, and confirmatory factor analysis (CFA) studies were conducted and reported. In reliability analysis, Cronbach alpha value for total scale was found to be between 0.89 and 0.60-0.78 for subscales; Item-total correlations were found above 0.30 for each subscale. Correlation coefficients in test-retest analysis are between 0.20-0.57. In addition, in the confirmatory factor analysis (DFA) conducted as a result of the last study of the scale, the fit indices of the model tested were found to be appropriate [(χ2 (2545,804, sd = 1027, p = .000); χ2 / sd = 2.47; RMSEA = 0.06; SRM = 0.07; GFI = 0.97; AGFI = 0.94; CFI = 0.92; IFI = 0.92; NFI = 0.91; RFI = 0.87]. the applications result in accordance with the obtained validity and reliability analysis findings Enneagram Turkey Personality inventory (ETPI) is understood to be a valid and reliable scale.

Keywords

Psychology, Enneagram, Personality, Scale Development, Validity and Reliability