The hardy personality and its relationship to extraversion and neuroticism

Hardiness is conceptualised as a personality characteristic which encompasses three component traits (commitment, challenge and control), and acts as a resistance resource mitigating the adverse effects of stressful life events (Kobasa, 1979). A number of empirical studies in the U.S. have demonstrated its role in moderating stress-illness relationships, but hardiness has not received much attention in the U.K. In the present article, data from a U.K. sample (N = 87) are used to examine (i) the psychometric characteristics of the current version of Kobasa's hardiness measure, and (ii) the relationships of hardiness, and its component scales, to the Eysenck dimensions of extraversion, neuroticism and the lie scale.Hardiness scores were found to be negatively related to age, but did not differ significantly between males and females, and were not influenced by social desirability biases. The alpha value for the reliability of the overall scale was 0.89. Scores on the components of commitment, challenge and control were strongly related to extraversion (positively) and to neuroticism (negatively), the canonical correlation being 0.60. Multiple regression analysis showed that age, gender and the Eysenck dimensions jointly accounted for 37% of the variance in hardiness scores. These results are discussed in relation to psychometric issues and relevant literature findings.     

Mobility,extraversion, and neuroticism

Mobility, a property of Pavlovian higher nervous activity, was measured using an induction task. Negative induction, following presentation of an excitatory stimulus, is an index of mobility of excitation and positive induction, following presentation of an inhibitory stimulus is an index of mobility of inhibition. Mobility scores from 27 male and 37 female first-year psychology students, age 17 to 42 years were related to extraversion and neuroticism derived from Eysenck’s Personality Inventory (Form A). Mobility of excitation and mobility of inhibition were found to be unrelated. Individual differences in the magnitude and latency of induction indicate that individuals can be typed according to low, medium, or high mobility of either nervous process. No relationship was found between neuroticism and mobility, and no relationship was found between extraversion and mobility of excitation. However, a significant negative relationship was found between extraversion and mobility of inhibition, providing a link between Pavlovian properties of the nervous system and Eysenck’s personality dimension of extraversion.     

The relationship of Laing's concept of ontological insecurity to extraversion and neuroticism

Four components were extracted from Laing's concept of ontological insecurity and operationally measured. The desire to be noticed was found to be correlated with extraversion while doubts in one's existence was related to neuroticism. The desire to be remembered after death and the rootedness of the mind in the body were not related to extraversion or neuroticism scores.     

The relationship between oral character traits and extraversion/neuroticism

The present study was a factor-analytic study attempting to uncover the relationship between the psychoanalytic concept of oral traits and the personality dimensions of E and N. Two hundred and fifty-four Ss completed the Eysenck Personality Inventory (EPI) and thewritten form of the 19 oral scales designed by Goldman-Eisler. The data was subjected to factor analysis. It was found that five factors were necessary to account for the majority of the observed common variance. The extraction of five factors was contrary to the extraction of two factors in the Goldman-Eisler study. Path analysis, using multiple regression, was performed to find to what extent E and N influenced the 19 oral scales. It was found that 15 of the 19 scales were significantly causally influenced by E and N. Because there were discrepancies between the correlations in the present study and those reported by Goldman-Eisler, and discrepancies in the number of factors to emerge were found, it was decided to subject the original correlation matrix of the Goldman-Eisler study to re-analysis. The results of this re-analysis demonstrated serious mathematical flaws in Goldman-Eisler's results.     

The relationship of extraversion,neuroticism, and sensation-seeking to questionnaire-derived measures of nervous system properties

Five obliquely rotated factor analyses were performed on items from Eysenck and Eysenck’s (1975) EPQ, Zuckerman’s (1975) Sensation-Seeking Scale, and Strelau’s (1972) temperament inventory (STI), administered to 277 subjects (Ss). The analyses were used to examine the relationships between the personality dimensions E, N, L, P and Sensation-Seeking, which pertain mainly to social situations, attitudes and feelings, and questionnaire-derived measures of nervous system properties, which, while validated on experimental indices of nervous system properties derived from Nebylitsyn’s (1972) model, are expressed as characteristic features of social behavior, work style and activity. Four factors were identified—extraversion/strength of excitation/mobility; self-control of affect/stability/caution; strength of inhibition/verbal control/motor expressiveness/ nonmanipulativeness; and sensation-seeking/nervousness. The results offer support for Eysenck’s claim of some identity between excitatory strength and E, for the reported relationship between E and mobility, and for Eysenck’s conditioning postulate. They also suggest that similar temperamental variables underlie individual differences in both social and occupational/motor activity. Since Strelau’s STI items are validated on experimental indices of nervous system properties, it follows that typological characteristics may be inferred from questionnaire data derived from both behavioral categories.     

On the relationship between explicit and implicit self-concept of extraversion and neuroticism

Indirect methods such as the implicit association test (IAT) could complement traditional self-report questionnaires of personality traits. However, it is unclear whether IAT scores and self-report scores of nominally the same personality trait measure the same construct or overlapping but distinct constructs. To investigate how IAT and self-report personality scores relate to each other, we conducted a web-based data collection where participants completed self-report personality questionnaires (n = 432) and IATs for extraversion (n = 393) and neuroticism (n = 385). We found that extraversion self-report and IAT scores were more strongly correlated with each other than corresponding neuroticism scores. Overall, our findings suggest that although extraversion and neuroticism self-report and implicit measures are related, they do measure distinct constructs.     

Cognitive reactivity mediates the relationship between neuroticism and depression

Although neuroticism has long been established as an important risk factor for depression, the mechanisms through which this temperamental predisposition translates into the occurrence of symptoms are still relatively unclear. This study investigated cognitive reactivity, i.e. the ease with which particular patterns of negative thinking are reactivated in response to mild low mood, as a potential mediator. Individuals with (N = 98) and without a previous history of depression (N = 83) who had provided neuroticism scores six years previously were assessed for cognitive reactivity and current symptoms of depression using self-report questionnaires. Tendencies to respond to mild low mood with ruminative thinking mediated the relation between neuroticism and current symptoms of depression in both groups. Reactivation of hopelessness and suicidal thinking occurred as an additional mediator only in those with a history of previous depression. The results suggest that neuroticism predisposes individuals to depression by generally increasing the likelihood of ruminative responses to low mood. In those with a history of depression in the past, neuroticism additionally increases risk of recurrence by facilitating reactivation of previously associated patterns such as suicidal thinking and hopelessness. These findings suggest potential targets for interventions to help preventing the occurrence, or recurrence of depression in those who due to their temperamental predisposition are at an increased risk.     

Color preferences, extraversion, and neuroticism of art students.

Color preferences of 190 art students (G?tz & G?tz, 1974, 1975) were compared with the corresponding scores on extraversion (E) and neuroticism (N). It was found that the preferences of a group of 27 highly gifted young artists were different from preferences of average and less gifted Ss who had little or no artistic practice. In the latter group extraverts and ambiverts mainly preferred primary and secondary colors (light clear and dark clear tones included), while introverts preferred tertiary colors (earth colors) and achromatics. However, in the group of highly gifted Ss no significant differences between positive and negative rankings in both color categories were found. Neuroticism had no effect on color preferences; this holds for introverts and extraverts and for each single color.     

How the personality dimensions of neuroticism, extraversion and psychoticism relate to self-actualization

This study examines the relationship between the personality dimensions of ‘neuroticism’, ‘extraversion’, ‘psychoticism’, from the Eysenck Personality Questionnaire (EPQ) and ‘self-actualization’, measured by the Personal Orientation Inventory (POI) for 212 undergraduate students. The two major scales of the POI, (Time Competence and Inner Directed), both separately and as a combined measure of self-actualization were correlated with the scores obtained on the EPQ. The results showed the hypothesized significant negative relationship between neuroticism and self-actualization, and for females only, the hypothesized significant positive relationship between extraversion and self-actualization. Contrary to hypothesis, no relationship between psychoticism and self-actualization was found.     

Psychopathy and the personality dimensions of psychoticism,extraversion and neuroticism

The Eysenck Personality Questionnaire (EPQ) was administered to 173 male prison inmates for whom reliable assessments of psychopathy were available. Psychopathy was significantly correlated with the Psychoticism (P) scale (r = 0.16) and the Lie scale (r = 0.14), but not with the Extraversion (E) or Neuroticism (N) scales. Zone (octant) analysis indicated that psychopathy was not associated with any particular combination of P, E and N scores. Additional analyses, based on the discriminant function procedure described in the EPQ manual, indicated that inmates with high assessments of psychopathy were significantly less psychiatrically abnormal, in the EPQ sense, than were those with low assessments of psychopathy. A series of comparisons was also made between the P scale and a 22-item psychopathy checklist. The P scale was significantly correlated with six of the items, and with factors 1 (r = 0.30) and 4 (r = 0.19) that emerged from a principal components analysis of the checklist. Factor 1 is related to an impulsive, unstable lifestyle with no long-term commitments and factor 4 to the early appearance of antisocial behavior. It is argued that the P scale reflects the criminal, antisocial aspects of psychopathy and that the results probably have no direct implications for the suggestion that psychopathy and psychoticism are related in some fundamental way. A canonical analysis indicated that some interesting relations may exist between the EPQ variables and the psychopathy factors.     

Love, work, and changes in extraversion and neuroticism over time

The present study examined individual differences in change in extraversion, neuroticism, and work and relationship satisfaction. Of particular interest were the correlations between changes. Data were from the Victorian Quality of Life Panel Study (B. Headey & A. Wearing, 1989, 1992), in which an overall 1,130 individuals participated (ages 16 to 70). Respondents were assessed every 2 years from 1981 to 1989. Four major findings emerged. (a) There were significant individual differences in changes in extraversion and neuroticism. (b) Change was not limited to young adulthood. (c) Development was systematic in that increased work and relationship satisfaction was associated with decreases in neuroticism and increases in extraversion over time; on average, the magnitude of the relation between changes in work and relationship satisfaction and traits was .40. (d) Cross-lagged models indicated traits had a greater influence on role satisfaction; however, marginal support emerged for work satisfaction leading to increased extraversion. Implications of correlated change are discussed.     

Social indicators as indexes of neuroticism and extraversion

Lynn and Hampson (1975) and recently Lester (2000) suggested that national level of extraversion (E) and neuroticism (N) could be assessed by using certain national indicators like suicide and divorce rates. In this study, Lynn and Hampson’s (1975) and Lester’s (2000) models were assessed by using 1990s data. Although Lynn and Hampson’s original N and E factors correlated with EPQ N (r=0.48) and E (r=0.60) scores as hypothesised, the factor structure did not recur in the 1990s data. Factor analysis supported Lester’s (2000) model of N and E. However, the factor loadings for EPQ N and E were rather modest (0.49 for N and 0.36 for E). It was concluded that more research with larger datasets and new social indicators are needed before social indicators could replace the EPQ in comparisons of national characteristics of nations.