EPQ-REysenck Personality Questionnaire-Revised (behavioral science)
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The presently used instrument, EPQ-R, is equipped to detect social desirability via 'Control scale' or 'L-Scale'.
After providing informed consent, all participants completed the EPQ-R first and then were asked if they were smokers.
Table 2 shows average scores on the EPQ-R subscales separately for smokers and non-smokers.
An analysis of covariance (ANCOVA) on the average log k values with the extraversion, neuroticism and psychoticism subscales of the EPQ-R as covariates found that the effect of smoking status was significant, F(1,821) = 17.343, p < .0001.
Answering EPQ-R for adults, pressing enter button, age, gender, sample number and score for six scales, including introversion-extroversion (E), psychotics (P), neurotics (N), criminality (C), addiction (A) and lying (L), are shown on the screen.
Table 1: Mean and standard deviation in EPQ-R personal scales for men in different age groups.
At the start of the semester, students completed the EPQ-R and the NEO-FFI scales, and after providing written informed consent, four salivary samples were taken to assess cortisol levels during the late afternoon (between 4 and 6 pm).
Neuroticism scores on the EPQ-R and NEO-FFI questionnaires were positive and highly correlated (.73), as was extraversion (.61).
Table 3 describes mean scores, standard deviations, and reliabilities of the EPQ-R and the CPS scales.
There are indications that we succeeded in this effort, since the alphas of the CPS scales are high and the EPQ-R and the CPS scales appeared to be sufficiently related.
A comparison of the parolee sample with the norms for EPQ-R (N = 508) and the BASIS-A (N = 1,083) was conducted using multiple t- tests with a Bonferroni correction to control for Type I Errors.
A comparison of the parolee group with the EPQ-R norms yielded significant differences (p < .01) between the groups on the P (t = 8.79) and L (t = 5.44) Scales.