Validity of self-efficacy scale scores for a Spanish sample

This study analyzed the validity of the Sherer, et al. Self-efficacy Scale for a Spanish sample of 555 subjects, 257 men and 298 women. 415 were from the general population; 34 schizophrenics and 45 with eating disorders were from a clinic, plus 61 drug addicts from two centers. All met DSM-IV-R criteria. The Eysenck Personality Questionnaire, State-Trait Anxiety Inventory, Assertiveness Inventory, and the Self-control Questionnaire were administered. The reliability for total scores, general factor were high even when social self-efficacy was low. A bidimensional factor structure seemed more acceptable. The Self-efficacy scale scores correlated with those on the Self-control Questionnaire and the Assertiveness Inventory. Extraversion scores on the Sincerity dimension of the Eysenck Personality Questionnaire correlated with scores on the State-Trait Anxiety Inventory and Eysenck's Neuroticism and Psychoticism scales. Significant mean differences appeared between the general population group and the three clinical groups. These analyses support the usefulness of the scale for clinical practice and research with Spanish samples.     

A comparison of the Guilford and Eysenck factors of personality

The correlations of factor scores from the Guilford-Zimmerman Temperament Survey (GZTS) with factor scores on the Eysenck Personality Inventory (EPI) and the Eysenck Personality Questionnaire (EPQ) were compared to predictions made by Guilford and Eysenck regarding the structure of personality. Factor structure of the GZTS was consistent with Guilford's proposed model. Eysenck's Neuroticism was strongly associated with Guilford's Emotional Stability (E) and E plus Objectivity (O) factors. Eysenck's Psychoticism had no counterpart on the GZTS, although it was associated with Restraint (R). EPI-Extraversion was related to both Guilford's Social Activity (SA) and Introversion-Extraversion (IE) second-order factors, while EPQ-Extraversion was related only to SA. Findings are discussed in terms of Eysenck's evolving definition of Extraversion and the emerging importance of the Impulsivity primary factor.     

Benefits of all work and no play: the relationship between neuroticism and performance as a function of resource allocation

The authors evaluate a model suggesting that the performance of highly neurotic individuals, relative to their stable counterparts, is more strongly influenced by factors relating to the allocation of attentional resources. First, an air traffic control simulation was used to examine the interaction between effort intensity and scores on the Anxiety subscale of Eysenck Personality Profiler Neuroticism in the prediction of task performance. Overall effort intensity enhanced performance for highly anxious individuals more so than for individuals with low anxiety. Second, a longitudinal field study was used to examine the interaction between office busyness and Eysenck Personality Inventory Neuroticism in the prediction of telesales performance. Changes in office busyness were associated with greater performance improvements for highly neurotic individuals compared with less neurotic individuals. These studies suggest that highly neurotic individuals outperform their stable counterparts in a busy work environment or if they are expending a high level of effort.     

Electrodermal response to sexual materials.

Four groups of college students selected on the basis of high or low Eysenck Personality Inventory scores were asked to talk or simply think about a series of slides differing in overt sexual content. Data showed that for both conditions those high on Neuroticism (n = 8) showed more electrodermal activity than did those scoring low (n = 8), and over all subjects there was a significant correlation between Neuroticism scores and the physiological measure. High and low scorers on Extraversion scale (ns = 10) showed no analogous differences in electrodermal activity.     

Relationships between trait measures in groups chosen for their extreme scores on the Eysenck personality inventory

Four groups of subjects chosen for their relatively extreme scores on the Extraversion and Neuroticism scales of the Eysenck Personality Inventory were tested using Endler's Situation-Response Inventory of General Trait Anxiousness and Strelau's Temperament Inventory subscales of excitation and inhibition. Although many of the differences across groups were predictable it was found that the dimensions tapped by Eysenck's scales act as modifier variables on the other measures, producing different degrees of inter-correlation in the various subgroups.     

Item format and the structure of the Eysenck Personality Inventory: a replication

A seven-choice response format for personality inventories allows finer distinctions by subjects than the traditional two-choice format. The Eysenck Personality Inventory was employed in the present study to test the hypothesis that use of the expanded format would result in a clearer indication of test structure. A principal components analysis with a varimax rotation retained two components for the two-choice format, clearly identifiable as Eysenck's "Neuroticism" and "Extraversion" which accounted for 16% of the variance. The expanded format retained four components accounting for 28% of the variance.     

Stability of the Eysenck Personality Questionnaire for a cross-sectional sample

Factor comparability of the Eysenck Personality Questionnaire-Revised was tested by contrasting three groups of people: young, adult, and elderly persons. Personality trait factors were significantly invariant among age groups. There was a significant age x sex interaction for Neuroticism scores.     

Comparison of special education and regular students in Puerto Rico on the Eysenck Personality Questionnaire

The Eysenck Personality Questionnaire and the Eysenck Personality Questionnaire for Children have been standardized for Puerto Rico. In this study the latter test was administered to 24 14-yr.-old boys in special education. No significant differences in scores on Neuroticism or Psychoticism were observed for these boys and 405 12-yr.-old regular students. Results are discussed in terms of the effectiveness of the special education program in Puerto Rico.     

Extraversion and neuroticism in team sport participants, individual sport participants, and nonparticipants

Scores on Extraversion and on Neuroticism as measured by the Eysenck Personality Inventory were compared for 90 undergraduate team sport participants, individual sport participants, and nonparticipants (43 men, 47 women, M age = 20.3 yr.). From past research and Eysenck's biological theory of personality, it was hypothesized that sport participants would score higher on Extraversion and lower on Neuroticism than nonparticipants, and that team participants would score higher on Extraversion and perhaps higher on Neuroticism than individual sport participants. By comparing scores for students in first year and final year, it was also investigated whether pre-existing personality differences drew people to sport (the gravitational hypothesis) or whether personality changed as a function of sport participation (the developmental hypothesis). The main findings were that team participants scored higher on Extraversion than both individual sport participants and nonparticipants, and that test scores did not change over time, supporting the gravitational hypothesis for Extraversion.     

“Delayed Response” as Tested by three Methods and its Relation to Other Learning Situations

The so-called “nervous habits” of 198 students were assessed by time-sampling 22 movement categories. Concentration of manipulatory behavior in the head and hand areas suggested that the stimulation generated by these activities is of some importance. Compared to men, women showed less facial manipulation and less leg and foot movement, but compensated, particularly by more nail-biting and manicure. Category scores did not have significant linear correlations with either Extraversion or Neuroticism scores on the Eysenck Personality Inventory (EPI). This may be due to idiosyncrasies in movement patterns.     

Hierarchical structure of the Eysenck Personality Inventory in a large population sample: Goldberg’s trait-tier mapping procedure

The structure of the Eysenck Personality Inventory (EPI) is poorly understood, and applications have mostly been confined to the broad Neuroticism, Extraversion and Lie scales. Using a hierarchical factoring procedure, we mapped the sequential differentiation of EPI scales from broad, molar factors to more specific, molecular factors, in a UK population sample of over 6500 persons. Replicable facets at the lowest tier of Neuroticism included oversensitivity, mood lability, nervous tension and rumination. The lowest order set of replicable Extraversion facets consisted of social dynamism, sociotropy, haste, jocularity, communalism and impulsivity. The Lie scale consisted of an interpersonal virtue and a behavioral diligence facet. Users of the EPI may be well served in some circumstances by considering its broad Neuroticism, Extraversion and Lie scales as multifactorial, a feature that was explicitly incorporated into subsequent Eysenck inventories and is consistent with other hierarchical trait structures.     

Examining the relationship between the Eysenck personality inventory and the sixteen personality factors questionnaire using predictive configural frequency analysis

A nonparametric analogue of canonical correlation analysis, called P-CFA, was used to determine how the Eysenck Personality Inventory is related to Cattell's Sixteen Personality Factors Questionnaire. The P-CFA methods used showed that Eysenck's personality dimensions of Extraversion and Neuroticism can be predicted quite well from suitably chosen primary scales in the Cattell questionnaire. The results were consistent with those obtained in another study using canonical analysis. Beyond that, P-CFA methods were used to predict Eysenckian trait-type categories from Cattell's primary scales. The results were weak and not predictable from canonical analysis, but showed potential analytic capabilities of P-CFA that are not available in canonical analysis.     

Personality test reliability: correlates for older subjects

This study reports the findings of an investigation of psychological and social factors related to test-retest stability and change in scores on the Eysenck Personality Inventory given to 167 older men and women. Higher reliability coefficients on the Eysenck were associated with better scores on a measure of well being and higher levels of education.     

A comparison between three and five factor models of Pakistani personality data

The Eysenck Personality Questionnaire-Revised (EPQ-R), the Eysenck Personality Profiler Short Version (EPP-S), and the Big Five Inventory (BFI-V4a) were administered to 135 postgraduate students of business in Pakistan. Whilst Extraversion and Neuroticism scales from the three questionnaires were highly correlated, it was found that Agreeableness was most highly correlated with Psychoticism in the EPQ-R and Conscientiousness was most highly correlated with Psychoticism in the EPP-S. Principal component analyses with varimax rotation were carried out. The analyses generally suggested that the five factor model rather than the three-factor model was more robust and better for interpretation of all the higher order scales of the EPQ-R, EPP-S, and BFI-V4a in the Pakistani data. Results show that the superiority of the five factor solution results from the inclusion of a broader variety of personality scales in the input data, whereas Eysenck's three factor solution seems to be best when a less complete but possibly more important set of variables are input.     

Psychoticism and creativity

Eysenck and Eysenck (1976) cited a number of studies showing that creativity and originality are associated with high scores on their Psychoticism factor, P. In this study, we examined the generality of this claim by using a different set of creativity measures, scales from the Comprehensive Ability Battery (Hakstian & Cattell, 1976) and the Eysenck Personality Questionnaire (Eysenck & Eysenck, 1975), with a sample of 173 students. No appreciable overlap was found between the creativity scales and P. A number of possible explanations for this result are discussed, and we concluded that this finding may cast doubt on the generality of the link between creativity and P.     

中国大学生艾森克人格问卷测试因素结构之探讨

本文旨在检验艾森克人格理论对中国人的适合性,探明艾森克人格问卷(成人)的结构。经对2311名大学生艾森克人格问卷的作答数据做验证性因素分析,艾森克人格理论未能得到证明。使用全息项目因素分析方法对EPQ进行因素分析,得出神经质、外向性、友善因素、诚实因素、任性因素和严谨因素六个因素。该方法较好地克服了经典线性因素分析高估维度数。低估因素负荷等缺陷。     

The comparability of the JEPI, JEPQ and EPQ among 15- to 16-yr olds

One hundred and ninety-one 15- to 16-yr olds completed the Junior Eysenck Personality Inventory (JEPI), the Junior Eysenck Personality Questionnaire (JEPQ) and the Eysenck Personality Questionnaire (EPQ). In terms of the internal consistency of the test items, and the statistical independence of the scales, the EPQ emerges as the most satisfactory measure of personality dimensions in this age group.     

The three-factor structure of the Eysenck personality inventory revealed by a two-step confirmatory procedure

Evidence for the existence of the assumed three-subscale structure of the Eysenck Personality Inventory has been persistent but tenuous. It was suggested that a substantial reason for this may be the discrepancy between the numbers of items in the Lie (L) scale (9 items) and those in the other two scales [Neuroticism (N) and Extraversion (E)] which have 24 items in each. A two-step confirmatory procedure to circumvent this problem was proposed, involving a two-factor analysis of the Neuroticism and Extraversion items, followed by a three-factor analysis of equal numbers of N, E and L scale items. An analysis of the responses of 386 undergraduates demonstrating the proposed procedure revealed in the first step, quite unequivocally, the presence of Neuroticism and Extraversion factors, and in the second step, a third factor clearly congruent with the L scale.     

A note on relations between trait and state measures of arousal

Analysis of Eysenck Personality Inventory measures of personality and measures of mood obtained by the Nowlis Mood Adjective Check List revealed four main factors. Neuroticism was associated with a cluster of mood variables related to anxiety and depression and extraversion to a cluster related to self -confidence, but not to activation. Implications for the use of these measures in cognitive and other research are indicated.     

EPQ correlates of the personality deviance scale

New patients at a psychiatric day hospital were asked to complete a set of questionnaires, including the Eysenck Personality Questionnaire, and the Personality Deviance Scale of Bedford and Foulds. This paper reports on the resulting correlations between the variables measured by these two inventories. The findings broadly replicate those of Bedford and Foulds with the Eysenck Personality Inventory and the Personality Deviance Scale. The Neuroticism scale of the EPQ was found to correlate with all of the PDS scales, and particularly highly with intropunitiveness. As regards the Psychoticism Scale of the EPQ, this was found to correlate highly with extrapunitiveness, but not with intropunitiveness or dominance. It is concluded that there appears to be some relationship between P and this hostility measure of extrapunitiveness, a finding somewhat in contradiction to recent conclusions by Forbes based on his study of a normal sample.