A multiple replication of the three-factor solution of the Eysenck personality inventory identified using a two-step confirmation and the factor replication procedure,FACTOREP

For more than 20 yr there has been argument over the precise factor structure of the Eysenck Personality Inventory (EPI). There has recently been some empirical support for the suggestion that this failure to find the original structure is a result of the discrepancy in size between the Neuroticism and Extraversion scales (24 items each) and the Lie scale with nine items. In a recent study the present authors identified the three-factor structure using a two-step process which involved a two-factor analysis of the Neuroticism and Extraversion items followed by a three-factor analysis of an equal number of items from all three scales. This process was repeated in the present study across the responses from two further independent subjects groups. The factor comparison procedure FACTOREP provided strong evidence of the robust and consistent replications of both the two-factor structure of the Extraversion and Neuroticism items and of the three-factor structure of the nine Extraversion, nine Neuroticism and nine Lie scale items.     

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.     

Assertiveness,aggressiveness and Eysenck's personality variables

The relationship of scores on the Interpersonal Behavior Survey (IBS) and the Eysenck Personality Questionnaire (EPQ) were studied to investigate the relationship of assertiveness and aggressiveness to more basic dimensions of personality. This relationship was studied in two samples. Sample one consisted of 12 psychiatric inpatients, 67 college students and 69 state prison inmates. Sample two was made up of 50 psychiatric inpatients. The correlational results were highly similar in both samples. Significant negative correlations were found between the EPQ Neuroticism scale and IBS assertiveness scales; significant positive correlations were found between the EPQ Neuroticism and Psychoticism scales and the IBS aggressiveness scales, and significant positive correlations were obtained between the EPQ Extraversion scale and the IBS assertiveness scale. An ANOVA revealed a significant Neuroticism by Extraversion interaction on the IBS General Assertiveness, Rational scale. Neurotic introverts were found to have especially large deficits in assertive behavior. The results are generally consistent with Eysenck's theory of personality.     

A cross-cultural study of personality: Swedish and English children

Five hundred and thirty-one Swedish boys and 559 Swedish girls completed the Junior Eysenck Personality Questionnaire (J.EPQ) translated into Swedish by the authors (A.-L.v.K. and L.v.K.). Factor comparisons indicated virtually identical factors of Psychoticism (P) Extraversion (E), Neuroticism (N) and social desirability—Lie (L)—in Sweden as in England. Slight item additions produced scales with adequate reliabilities. Sex differences were in line with most studies, i.e. boys scoring higher than girlson Psychoticism (P) but lower on Neuroticism (N) and Lie (L). Finally, the only significant cross-cultural difference between Swedish and Engish children proved to be on Neuroticism (N) where the Swedish children had much lower scores than the English children.     

The Narcissistic Personality Inventory: alternative form reliability and further evidence of construct validity

The aim of this study was twofold: (a)to measure the alternate form reliability of the Narcissistic Personality Inventory, and (b)to determine its construct validity by correlating it with the four scales of the Eysenck Personality Questionnaire (EPQ). The alternate form reliability was .72. The Extraversion and Psychoticism scales of the EPQ were positively and significantly correlated with the narcissism measure, and the Lie scale showed a significant negative correlation. The Neuroticism scale showed a nonsignificant relationship with narcissism. In addition, the combined Extraversion and Psychoticism scales produced[ a Multiple R with the narcissism measure that accounted for significantly more of the variance in narcissism than did either measure alone.     

Neuroticism: how does one slice the PI(e)?

Costa and McCrae's operationalization of the Five-Factor Model, the Neuroticism, Extraversion, and Openness Personality Inventory—Revised (NEO-PI-R; Costa and McCrae, 1992a), measures five broad dimensions of personality: Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness. According to Costa and McCrae, the Neuroticism (N) domain scale subsumes six facets. Although derived rationally and tested factor analytically, the factorial structure of the facet scales has yet to be unequivocally confirmed with analytic methods imposed at the item level. Using confirmatory and exploratory factor-analytic techniques, this study examines and tests the structure of the N domain scale of the NEO-PI-R. Confirmatory factor analysis indicates poor replication of the structure of the N scale. Results of the exploratory factor analysis indicate that while three of the facets replicated quite well, the other three factors did not correspond to Costa and McCrae's formulation. Future research should elaborate on the factorial structure and construct validity of the N facet scales, especially if they are to be used and interpreted in personality and clinical assessment. © 1997 by John Wiley & Sons, Ltd.     

Personality and psychopathology of drug addicts in Puerto Rico

Drug abuse is one of the most pressing sociomedical problems of society. The purpose of this study was to examine the personality and psychopathology of addicts. 229 addicts in treatment programs scored high on Neuroticism and on the Lie Scale and low on Psychoticism and Extraversion on the Eysenck Personality Questionnaire for Puerto Rico. An Addiction Scale, based on a factor analysis, showed a high component of Neuroticism items.     

A Genome‐Wide Scan for Eysenckian Personality Dimensions in Adolescent Twin Sibships: Psychoticism,Extraversion, Neuroticism,and Lie

ABSTRACT We report the first genome‐wide scan of adolescent personality. We conducted a genome‐wide scan to detect linkage for measures of adolescent Psychoticism, Extraversion, Neuroticism, and Lie from the Junior Eysenck Personality Questionnaire. Data are based on 1,280 genotyped Australian adolescent twins and their siblings. The highest linkage peaks were found on chromosomes 16 and 19 for Neuroticism, on chromosomes 1, 7, 10, 13 m, and 18 for Psychoticism, and on chromosomes 2 and 3 for Extraversion.     

The Eysenckian personality structure: a Giant Three or Big Five model in Hong Kong?

In the last decade, the area of personality measurement has been dominated by three major systems: the Eysenckian Giant Three, the Cattellian sixteen factors and the Big Five. While many of the Cattellian second-stratum factors have been shown to fit the Big Five system, can the factors measured by the Eysenck Personality Questionnaire also be described by the five-factor model? The study reported in this article was designed to determine whether the dimensions measured by a revised Chinese version of the Junior Eysenck Personality Questionnaire would, in a Hong Kong population, replicate the Giant Three or the Big Five and whether there is evidence to support the suggested dual nature of the Extraversion dimension and the Lie scale in this Cantonese-speaking group. A four-factor solution indicated that the data did not support the notion of a Giant Three model plus a Lie scale and lacks clarity. A five-factor solution produced factors that can clearly be labelled Neuroticism, Conscientiousness, Sociability, Excitement-Seeking and Agreeableness. Sociability, focusing on meeting people and Excitement-Seeking, which consists of Impulsivity and Liveliness, derive from items in Eysencks Extraversion dimension. The Openness factor of the Big Five system is absent in this population.     

Personality and happiness: a national-level analysis

The possibility that national personality traits could explain national subjective well-being (SWB) is controversial, with many researchers arguing that traits are irrelevant to any national-level analysis. The weaknesses of this standpoint are reviewed, followed by a series of empirical investigations. Using Eysenck's 3-factor model (H. J. Eysenck & S. B. G. Eysenck, 1975) and P. T. Costa and R. M. McCrae's (1992b) 5-factor model, the authors found that Neuroticism and Extraversion correlated significantly with national SWB. Lie scale scores were also related strongly to national SWB. Neuroticism and Extraversion incrementally predicted SWB above gross national product per capita. The strength of these results indicates that personality can have stronger relationships at national levels of analysis than at the individual level. National personality traits appear to be unwisely neglected, having considerable but largely unconsidered explanatory power.     

Human genetic markers associated with variation in intellectual abilities and personality

Eight commonly-used genetic markers were correlated with the Verbal Reasoning (VR), Space Relations (SR) and Clerical Speed and Accuracy (CSA) tests of the Differential Aptitude Tests (DAT) and the Psychoticism (P), Extraversion (E), Neuroticism (N) and Lie (L), scales of the Eysenck Personality Questionnaire (EPQ). In a sample of 122 undergraduate students tongue-curling ability, light eye color and inability to taste PTC were related to high intelligence, with dominant right eye, disconnected ear lobes and near-sightedness being associated with specific DAT scales. P showed a male-female sex difference. Dark eyes were related to E and N.     

The effect of testing instructions for handling social desirability on the Eysenck personality questionnaire

The Hebrew version of the Revised Eysenck Personality Questionnaire (EPQ-R) was administered to two groups. One group was given special ‘feedback’ instructions intended to make subjects aware of the extent of their distortions due to responding in a socially desirable direction, and of the possibility of detection of such distortions. The other group was given ordinary standard instructions. There was a substantial change in the mean of the Lie (L) scale, a moderate change in the Neuroticism (N) scale and no significant change in the mean of the Extraversion (E) and Psychoticism (P) scales. The reliability estimates and factor pattern showed a marked improvement of the P scale and some improvement of the N and L scales, and no effect on the E scale.     

Emotional Experience and Its Relation to the Five-Factor Model in Estonian

ABSTRACT In this article we studied relations between self-rated emotional experience and the five-factor model of personality. Replicating previous findings we found that two dominant dimensions of emotional experience, Negative Affect and Positive Affect (that accounted for three to five times more total variance among Estonian emotion-related terms than any other factors) are selectively related to Neuroticism and Extraversion. Data supported the hierarchical taxonomy scheme proposed by Watson and Clark (1992) in which two broad higher order affective states were each composed of several correlated but still clearly distinguishable moods with their specific content. The content of specific emotions mapped systematically onto measures of personality: Affect scales explained 40% to 50% of the total variance of Neuroticism, Extraversion, and Conscientiousness, approximately 20% of the total variance of Agreeableness, and only 13% of Openness to Experience. Besides the replication of the hierarchical bipartite structure of emotion terms itself in a non-Indo-European language, our data demonstrated that the general pattern of associations between affect and personality domains is also generalizable across languages and cultures.     

Cross-cultural comparison of personality: Hungarian children and english children

1150 Hungarian boys and 1035 girls were given the Junior Eysenck Personality Questionnaire translated into Hungarian. Product-moment correlations were factored by principal components methods, rotated by Varimax and then obliquely by Promax. Thirteen extra items, added for substitution if necessary, were included in this analysis. Very close agreement between the responses of British and Hungarian children were found for the Lie or Social Desirability scale, good agreement for Extraversion but less satisfactory agreement for Neuroticism and Psychoticism items. It is argued that the strength of the Lie score could well have interfered with the true responses for the other dimensions. Means and standard deviations for British and Hungarian children are given on scales comprised of items both groups have in common on their respective scoring keys, this being the only way the means can be compared.     

Month and season of birth are not associated with Extraversion and Neuroticism in an Egyptian sample

In a sample of 828 (383 men and 445 women) Egyptian undergraduates (M age = 19.6 yr., SD = 1.7), scores on Extraversion and Neuroticism scales of the Eysenck Personality Questionnaire were neither associated with the month nor the season of birth.     

Personality and life satisfaction: a facet-level analysis

At the global level of the Big Five, Extraversion and Neuroticism are the strongest predictors of life satisfaction. However, Extraversion and Neuroticism are multifaceted constructs that combine more specific traits. This article examined the contribution of facets of Extraversion and Neuroticism to life satisfaction in four studies. The depression facet of Neuroticism and the positive emotions/cheerfulness facet of Extraversion were the strongest and most consistent predictors of life satisfaction. These two facets often accounted for more variance in life satisfaction than Neuroticism and Extraversion. The findings suggest that measures of depression and positive emotions/cheerfulness are necessary and sufficient to predict life satisfaction from personality traits. The results also lead to a more refined understanding of the specific personality traits that influence life satisfaction: Depression is more important than anxiety or anger and a cheerful temperament is more important than being active or sociable.     

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.     

“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.     

Individual differences in delayed heart-rate recovery following stress: The role of extraversion,neuroticism and emotional control

The aim of this study was to investigate the effects of individual differences on heart-rate reactivity and recovery following exposure to a laboratory stressor (performance on the Stroop task). The personality scales used were EPI Extraversion and Neuroticism and four subscales comprising the Emotion Control Questionnaire (ECQ). Contrary to predictions the EPI scales were unrelated to the physiological indices, but there were significant correlations between the Benign Control scale of the ECQ and heart rate reactivity and between the Rehearsal scale and heart-rate recovery.     

Cross-cultural comparison of personality: Norway and England

Three hundred and seventy-seven male and 425 female Norwegian subjects completed the translated Eysenck Personality Questionnaire (EPQ). Factor comparisons all exceeded 0.97, so that the factors of Psychoticism (P), Extraversion (E), Neuroticism (N) and Social Desirability or Lie Scale (L) can be considered to be identical with those found in England. Sex differences were the usual, i.e. males scored higher that females on P and E but lower on N and L. Cross-cultural comparisons found no statistical differences between the personality scores of the two countries, except on Neuroticism, with both Norwegian sexes scoring significantly lower than their English counterparts. A slight tendency for Norwegian males to score lower on Social Desirability was detected.