5.2 Procedures 5.dos.1 Machiavellianism: The brand new Mach-IV directory was applied to evaluate Machiavellianism, that’s a commonly put way of measuring the brand new create . This inventory consists of 20 facts said to represent the fresh center options that come with Machiavellianism (cynical world view, religion for the pushy methods, and you can practical morality). Initially precision and you can authenticity of your own Mach-IV are dependent because of the Christie and you can Geis. Previous research has located a beneficial split-50 % of reliabilities centered on several samples, which have the common precision coefficient off ?=0.79 . A suggest get try computed over the 20 points to would an overall Machiavellianism get.
5.2.dos Narcissism: This new Narcissistic Character List [fourteen, 24] was used to assess narcissism. The brand new NPI consists of 40 activities assessing seven areas of narcissism (i.elizabeth., quality, entitlement, mirror, authority, self-sufficiency, exhibitionism, exploitativeness), that happen to be reviewed towards an excellent 5-area Likert level away from (1) disagree highly so you can (5) consent firmly. The fresh NPI try mostly included in the newest Dark Triad books because taps for the grandiosity feature from narcissism, that’s really strongly related to Dark Triad browse . Raskin and Terry receive the newest NPI becoming legitimate and effectively stands for the main services off narcissism. Del Rosario et al. stated a powerful sample-retest relationship out of roentgen=0.81. A suggest element try determined of your forty things to would an overall narcissism get.
Cronbachs alpha to your SRP-III, Mach-IV, and NPI was basically ?=0
5.2.step three Psychopathy: The new Notice-Report Psychopathy-III is actually administered to evaluate new identification construct out of psychopathy. Brand new SRP-III includes 64 issues determining four facets of psychopathy (unstable lifetime, callous apply to, social manipulation, and you will antisocial choices). For each and every product is actually mentioned on good 5-area Likert-type scale having anchors anywhere between (1) disagree strongly so you’re able to (5) concur highly. The overall interior surface of one’s SRP-III (Cronbachs) is ?=0.81. To attenuate the full quantity of total items in the study, only the six products into highest grounds loadings for every single element out of an effective confirmatory grounds data into the a study by Neal ainsi que al. were used in today’s studies, for a total of 24 facts. An indicate compound try calculated of one’s 24 things to manage an overall psychopathy rating.
5.2.cuatro Class B identification disorders: The brand new people B bills of the Coolidge Axis II Collection were given to evaluate the symptoms of the party B identity conditions (antisocial, borderline, histrionic, and narcissistic). A total of 124 things along side four identity disorder bills have been given. Per items was replied towards the an excellent cuatro-point Likert-kind of measure anywhere between (1) highly not true so you’re able to (4) highly genuine. Coolidge and you will Merwin stated high inner reliabilities per class B subscale, Cronbachs ? between sites de rencontre pour lesbiennes 0.74 to 0.86, as well as stated high test-retest precision (one-few days period) regarding roentgen=0.ninety. The brand new CATI got an average concurrent validity towards the 13 personality problems bills into the Millon Systematic Multiaxial Collection out of r=0.58. T-score had been calculated for every single of your PD bills based on CATI norms.
six. Abilities and you can Dialogue
6.step one Accuracy The interior structure of size ratings for the measures applied in this research was good to excellent. 84, 0.80, and you will 0.93 respectively. Cronbachs alpha towards the antisocial, borderline, histrionic, and narcissistic PD scales was ?=0.85, 0.83, 0.79, and you can 0.77 respectively.
6.2 Sex differences in the dark triad To test the first two hypotheses, a series of independent samples t-tests were conducted to determine if sex differences existed in mean scores for each of the Dark Triad traits and in T-scores for each of the cluster B PD subscales. With regard to the three Dark Triad traits, as hypothesized, men (M=2.79, SD=0.46) scored higher than women (M=2.60, SD=0.46) on Machiavellianism (Mach-IV), t(659)=5.33, p < 0.001 (correlation coefficient of effect size rY ?=0.203, medium effect size), and men (M=2.56, SD=0.53) also scored significantly higher than women (M=2.22, SD=0.51) on psychopathy (SRP-III), t(659)=8.41, p < 0.001 (rY ?=0.311, large effect size). Contrary to the hypothesis, there was no significant difference between men (M=2.99, SD=0.60) and womens means (M=2.92, SD=0.48) on narcissism (NPI), t(659)=1.52, p=0.13 (rY ?=.059, negligible effect size). The results for Machiavellianism and psychopathy are consistent with the previous literature [1, 4, 5]. These results are not surprising and undoubtedly reflect genetic predispositions and cultural influences, at least based upon current Western culture. The lack of a significant difference between men and women on trait narcissism (NPI) is somewhat surprising and will be discussed below.