This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Psihologija – dodiplomski program na PIM Univerzitetu , Banja Luka , Bosnia and Herzegovina
The Dark Triad of Personality includes three dimensions related to antisocial and manipulative behavior: Machiavellianism, subclinical narcissism, and subclinical psychopathy. The HEXACO personality model proposed honesty-humility as one of the basic personality dimensions, which shares a lot of variance with the Dark Triad. This research deals with the metric characteristics of the Short Dark Triad (SD3) questionnaire and an honesty-humility subscale of the HEXACO-PI-R-60, on the prison sample. The goal was to determine which of the questionnaires would be psychometrically more appropriate for such sample. A total of 45 male inmates was tested in the Penal-Correctional Institution “Tunjice“ Banja Luka, on June 18th, 2015. For the SD3 questionnaire, there were 19 (1.56%) missing values observed, for 12 (26.7%) different participants. Little's MCAR test suggested that these values were probably absent completely at random: χ2=266 (279), p=.70. The same was true for all individual SD3 subscales (Machiavellianism: 6 (1.48%) missing values, for 5 (11.1%) participants, χ 2=45.5(39), p=.22; narcissism: 3 (0.74%) missing values, for 3 (6.67%) participants, χ 2=17.6(24), p=.82; psychopathy: 10 (2.47%) missing values, for 7 (15.6%) participants, χ 2=40.7(45), p=.66) and honesty-humility dimension, which had 6 (1.33%) missing values, for 5 (11.1%) participants: χ2=42.9(44), p=.52. Due to insignificant MCAR tests, it was appropriate to proceed with the missing values imputations (done via bootstrapping-based algorithm from Amelia II program). After imputations, the reliability coefficient, i.e. McDonald`s ω for all scales were calculated (coefficients were based on polychoric correlations). Reliabilities for the SD3 Machiavellianism, narcissism, psychopathy, and the HEXACO-PI-R-60 honesty-humility were as follows: .78, .58, .78, and .56. Thus, SD3 appears to be somewhat more reliable on a prison sample than honesty-humility, although it is possible that the questionnaire order (first SD3, then HEXACO-PI-R-60) and the total number of items (honesty-humility was presented as a part of the complete HEXACO-PI-R-60) affected the results.
Dark Triad of personality, HEXACO honesty-humility, Missing value analysis, Questionnaire reliability
The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.
