Age norms for impulsiveness,venturesomeness and empathy in adults

A total of 1320 Ss (559 males and 761 females) completed the I₆ Impulsiveness Questionnaire. Reliabilities, scale intercorrelations, means and standard deviations as well as age means are given after some item changes from the original I₅ Questionnaire. The resulting I₇ Impulsiveness Questionnaire is reproduced in the Appendix, together with the scoring key. A further 589 Ss (383 males and 206 females) completed the new I₇, together with the EPQ and intercorrelations of the seven factors obtained are given (i.e. Psychoticism, Extraversion, Neuroticism, Lie score, impulsiveness Venturesomeness and Empathy). A table of means and standard deviations for this second sample of Ss is also given for the sake of completeness.     

Platelet MAO activity associated with impulsivity and aggressivity

The Eysenck Personality Questionnaire (EPQ) and scales purporting to measure sensation seeking, impulsivity and introversion-schizoidia, and scales related to aggressivity from two personality inventories, the Karolinska Scales of Personality (KSP) and the Eysenck Impulsiveness- Venturesomeness-Empathy (IVE) inventory were given to 58 male subjects. Monoamine oxidase (MAO) activity was measured in platelets. The two sensation seeking scales were not associated with platelet MAO activity in the present subjects. The two impulsivity scales (IVE Impulsiveness and KSP Impulsiveness) and the KSP Irritability scale (an aggressivity-related scale) were negatively correlated with platelet MAO activity. Subgroups classified on the basis of platelet MAO activity differed in IVE Impulsiveness, KSP Detachment (introversion-schizoidia) and in KSP Irritability, low MAO subjects scoring higher in Impulsiveness and Irritability and high MAO subjects higher in Detachment. There were striking differences between the low MAO subgroup and the other subgroups in the percentage agreement responses in items of the IVE Impulsiveness scale, as well as in self-rated anger-proneness.     

Personality patterns of British police officers

This study investigates personality patterns in four different British police groups. The subjects comprised: (i) 84 police recruits; (ii) 84 probationary constables; (iii) 73 experienced constables; and (iv) 112 officers of senior rank. Of particular interest were personality traits measured by the Eysenck Personality Questionnaire (EPQ) and the Eysencks' I5. The former measures Psychoticism (P), Extraversion (E) and Neuroticism (N), whereas the latter monitors Impulsiveness (Imp), Venturesomeness (Vent) and Empathy (Emp). All groups tended to be low on P, but whereas the recruits were highly extraverted, venturesome and impulsive, the remaining groups were more reserved, controlled and exhibited fewer empathetic responses. The findings are discussed in terms of ‘wastage’ and occupational socialization.     

The relationship between psychopathy and impulsivity: A multi-impulsivity measurement approach

Psychopathy is a serious personality disorder of which impulsivity is a key component. However, impulsivity is a multidimensional construct, with multiple approaches to measurement, and different measures may be differentially implicated in psychopathy. This study investigated the relationship between psychopathy as assessed by the Psychopathic Personality Inventory-Revised (PPI-R; Lilienfeld & Widows, 2005), a personality measure of impulsivity (Barratt Impulsiveness Scale-11), and four behavioural measures of impulsivity (GoStop Impulsivity Paradigm, Two Choice Impulsivity Paradigm, Delay Discounting Task, Iowa Gambling Task). A nonclinical sample (N = 80) was recruited from the local community to advance understanding of psychopathy in non-incarcerated samples. The results indicated that the personality measure of impulsivity was strongly correlated with the PPI-R, while the behavioural measures were either not correlated or only weakly correlated with the PPI-R. The results are discussed in terms of the multifaceted nature of impulsivity and the need for the further development of behavioural measures of impulsivity, given their importance in clinical assessment and intervention.     

Further validation of the Penny Beliefs Scale - Weapons

The Penny Beliefs Scale - Weapons (PBS-W) comprises of 36 items that measure young people’s beliefs about carrying and using weapons. It was designed to facilitate our understanding of weapons carrying and use. The PBS-W has excellent internal reliability (Cronbach’s alpha of .92), extremely good test-retest consistency (ICC = .83) and is significantly positively correlated with self-reported delinquency. In order to further demonstrate the utility of the PBS-W it was compared with other measures that would be expected to be associated with weapons carrying and use. The PBS-W, the Eysenck Personality Questionnaire (EPQ-R-SV), the Maudsley Violence Questionnaire (MVQ), the Barratt Impulsiveness Scale (BIS-11), and the Brief Measure of Sensation Seeking (SS2) were administered to 189 school pupils in South Wales, aged between 16 and 18 years. Results demonstrated that the PBS-W is significantly positively correlated with EPQ Psychoticism (P), violent cognitions, impulsivity, and sensation seeking. Multiple regressions, controlling for gender and impression management (EPQ-Lie), showed that violent cognitions predicted beliefs about carrying and using weapons above and beyond P, sensation seeking and impulsivity. These findings suggest that violent cognitions are the single most powerful predictors of positive beliefs about carrying and using weapons.     

A psychometric investigation of the eysenck personality questionnaire (revised) and its relationship to the I.7 impulsiveness questionnaire

The present study investigated the psychometric properties of the Eysenck Personality Questionnaire-Revised (EPQ-R) and the I.7 Impulsiveness Questionnaire. 307 Ss (215 female, 92 male) completed the EPQ-R and the I.7. Scale means and the standard deviations were calculated, scale reliability tested, scale scores intercorrelated and the resulting matrices were factor-analysed. The items from the EPQ-R and the I.7 were submitted to an item factor analysis. The results of the present study were quite similar to those reported by Eysenck, Eysenck and Barrett (1985) for the EPO-R and those reported by Eysenck, Pearson, Easting and Allsopp (1985) for the I.7. It was concluded that the EPQ-R represents an improvement on the 90-item EPQ and that the I.7 represents an adequate and reliable measure of Impulsiveness, Venturesomeness and Empathy. The relationships between the EPQ-R factors and the I.7 factors are also discussed.     

Two experiments on the relation between psychoticism and response uncertainty in normal subjects

Previous studies have suggested that schizophrenics are affected by response uncertainty to a greater degree than normals or other psychiatric groups. Two studies examined whether a similar pattern of performance would be produced in normal Ss scoring high on questionnaire measures presumed to measure psychotic predisposition. The Psychoticism (P) scales from the EPQ and the unpublished PEN Inventory were employed; and response uncertainty was varied using a card-sorting procedure. In Experiment 1 males were more affected by increases in response uncertainty than females, but there was no difference between Ss scoring high and low on the P scales. Experiment 2 included a condition in which guide-cards were randomly reordered between trials. There was a highly significant tendency for Ss scoring high on the PEN P scale to be more affected by response uncertainty in this experiment. Again males were more influenced by uncertainty than females, but this was due largely to their performance under the condition where guide-cards were varied. Ss high on EPQ P also showed decremental performance under this condition. The data provided partial support for the validity of the P scales, particularly the PEN version of the scale, as indices of schizophrenic predisposition.     

Personality disorders and dimensions in pathological gambling

Comorbid DSM-IV Axis II personality disorders appear to be common in pathological gambling (PG) and may contribute to the chronic problems often associated with the disorder. This study sought to examine the relationship between PG, personality disorders, and impulsivity in a sample of pathological gamblers. Personality assessments included the SCID-II, Eysenck Impulsiveness Questionnaire, Tridimensional Personality Questionnaire, and Barratt Impulsiveness Scale. A total of 77 individuals with DSM-IV PG were included in this study, of which 35 (45.5%) met criteria for at least one personality disorder. Specific aspects of impulsivity were associated with certain personality disorders in PG when grouped by cluster, yet the presence of a personality disorder was not positively correlated with gambling severity. It remains unclear how the presence of a personality disorder and aspects of impulsivity may affect treatment outcome. Further exploration of these disorders and dimensions of personality may encourage a more inclusively global treatment approach.     

Impulsivity in adults: motor inhibition and time-interval estimation

There is a need for the development of behavioral measures of impusivity in order to elucidate the specific qualities of impulsive persons. The relationships between two behavioral measures of impulsivity and several personality inventories frequently used to assess inpulsivity were examined using 40 male Ss. The behavioral measures involved a motor-inhibition (MI) task and time-interval (TI) estimation. The personality measures included the Extraversion (E), Psychoticism (P) and Neuroticism (N) scales of the Eysenck Personality Questionnaire (EPQ), Barrat's Impulsivity Scale (BIS) and Gough's Socialization Scale (So). Significant relationships between MI scores and E, BIS and a proposed dimension of impulsivity obtained by the formation of E-P quadrants were found. In addition, performance on this task was related to So, P and E-N quadrants in the predicted directions. The consistency of these results supports the use of this task as a behavioral measure of impusivity in adults. Although personality inventory scores were not related to estimations, significant (negative) correlations were obtained between TI estimations and MI scores. The results indicate that TI estimation by itself is not an adequate measure of impulsivity, but does have implications for understanding impulsive behavior.     

Addictive personality traits in bulimic patients

Forty-five female patients attending for treatment for bulimia nervosa completed the EPQ and an Impulsiveness Inventory (I₇). An Addiction score, derived from items on the EPQ, was obtained confirming that this group of bulimic patients score almost as high as drug addicts and certainly well above the normal range. On individual personality scales, the bulimic Ss scored higher than normals on N, P, Imp and Emp, but lower on E, Vent and Social Desirability.     

Attribution of blame for criminal acts and its relationship with personality

This paper examines the relationship between some personality variables and attribution of blame by offenders for their criminal activity. A specially-designed ‘Blame Attribution Inventory’ was constructed and administered to 224 Ss who had committed ‘serious’ criminal acts. Factor analysis of the items revealed 3 independent factors: (1) ‘External’ Attribution (i.e. blaming the crime on social circumstances, victims, society); (2) ‘Mental-Element’ Attribution (i.e. blaming responsibility for the crime on mental illness, poor self-control, distorted perception); (3) ‘Guilt-Feeling’ Attribution (i.e. feelings of remorse, regrets, need for punishment). The inventory was administered to 40 offender patients who had completed the Eysenck Personality Questionnaire (EPQ), the Gough Socialization Scale (GSS) and the Beck Depression Inventory. External Attribution had significant correlation with the EPQ P scale, Mental-Element Attribution correlated significantly with the EPQ L scale and the GSS. Guilt-Feeling Attribution was associated with depression and neuroticism.     

Gender effects among undergraduates relating to suicide risk,impulsivity, aggression and self-efficacy

The present study investigated the association of impulsivity, aggression and self-efficacy with protective factors against suicide. The study population consisted of 300 Italian university students (141 males, 159 females); mean age 24.2 (SD = 3.01). Participants were assessed by means of the Reasons for Living Inventory, the Aggression Questionnaire, the Barratt Impulsiveness Scale, and the General Self-Efficacy Scale. Correlations between reasons for living and aggression and impulsivity scores were weak. However, for those individuals with high self-efficacy, aggression and impulsivity were associated with stronger reasons for living. These results support the possibility that increasing general self-efficacy could be a useful target for interventions directed toward suicide prevention in individuals with problems in emotional control.     

How personality relates to intelligence test performance: Implications for a theory of intelligence,ageing research and personality assessment

Previously reported findings indicate that variation of EEG evoked potential parameters is strongly related to both personality and intelligence differences (Robinson, 1982a, b). These data and the associated theory imply that personality should relate to intelligence test performance. Results are described in this report which indicate that subtest profiles obtained with the Wechsler Adult Intelligence Scale (WAIS) differ significantly for Ss scoring highest and lowest on the Extraversion (E) scale of the Eysenck Personality Questionnaire (EPQ); introverts tend to do better on the ‘Verbal’ subtests while extraverts tend to do better on the ‘Performance’ measures. Ss with middling scores on the E scale of the EPQ can also be distinguished in terms of specific WAIS profiles. In this case the results define two contrasting groups. Young male Ss with middling E scores tend to have high Psychoticism (P) and low Lie (L) scores on the EPQ as well as having distinctive WAIS profiles characterized by higher scores on subtests normally associated with a ‘Memory’ or ‘Attention-Concentration’ factor. Higher scores were also obtained by this subgroup on the Picture Arrangement and Block Design subtests which were previously shown to load a P + /L ? factor. The converse is true for older female Ss who also have middling E scores. As well as demonstrating a systematic relationship between personality and intelligence test performance these data provide some further support for a model of brain-behaviour relationships proposed by Robinson. Within this theoretical framework a neurophysiologically meaningful explanation can be provided for the three major factors that reliably emerge in factor-analytic studies of the WAIS. From an applied viewpoint, the data indicate that personality differences can be assessed from performance on tests such as the WAIS. On this issue the results are discussed with particular reference to Gittinger's Personality Assessment System. Implications for ageing research are also discussed.     

Delinquency in Emerging Adult Females: The Importance of Callous-Unemotionality and Impulsivity

Delinquent behavior has consistently been shown to be related to adverse outcomes later in life, ranging from educational difficulties to mental health problems and even premature mortality. Although previous studies have found social, family, and personality factors all contribute to delinquency, the majority of these studies have focused on either male or clinical samples. The current study goes beyond past research by examining how the subscales of callous-unemotional traits and impulsivity relate to emerging adult delinquency in females (N = 155) in a non-clinical population. Undergraduate student participants completed self-report measures of delinquency, impulsivity, and callous-unemotional traits as part of a larger test battery. As expected, general callous-unemotionality and impulsivity were positively correlated with delinquency; however, follow-up analyses revealed that only Callousness and Motor Impulsiveness subscales were significantly correlated with delinquency. All remaining subscale correlations were nonsignificant. A post-hoc backward stepwise regression analysis supported the correlational results, as Callousness and Motor Impulsiveness were the only significant predictors of delinquency. Limitations of the current study and future areas of research are also discussed.     

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.     

Comparison of impulsiveness,venturesomeness and empathy (I7) structure in English and Spanish samples: Analysis of different structural equation models

The present study analyzed the factorial structure of the I₇ Impulsiveness questionnaire (Impulsiveness, Venturesomeness and Empathy) with a Spanish sample of 742 males and 1.075 females, through exploratory and confirmatory factorial analysis. In relation to the original English data, a three-factor structure showed global congruency coefficients of 0.92 and 0.94 for men and women. Venturesomeness had a modest congruency for males (0.83). A cross-validation analytical strategy showed that the 24-item I₇ was invariant only for the female sample. A subsequent exploratory factor analysis with 24 items showed a sound factor structure. The 24-item version showed the best and most robust structure and similar internal consistency coefficients in regard to the 54-item version. No important differences were founded between I₇ long and short versions with impulsiveness scales of ZKPQ, BIS-10 and SPSRQ.     

Psychoticism, creativity and dichotic shadowing

Thirty Ss were presented with pairs of words simultaneously under the instruction to shadow one ear while ignoring the other (the Focused Attention condition) or to shadow one ear while attempting to remember the other (the Divided Attention condition). Ss also completed the Eysenck Personality Questionnaire and two tests of creativity from the Wallach and Kogan battery. It was hypothesized that Ss high on EPQ Psychoticism and on creativity should make more shadowing errors of omission and intrusion. Creative Ss made significantly more errors of intrusion under the divided attention condition, but Ss scoring high on the Similarities subtest showed significantly fewer errors in the Focussed Attention condition. An ‘impulsivity’ interpretation of the data is tentatively advanced, and it is shown how this interpretation may explain a number of the anomalous findings in the psychoticism literature.     

Comparison of impulsiveness, venturesomeness and empathy (I7) structure in English and Spanish samples: Analysis of different structural equation models

The present study analyzed the factorial structure of the I₇ Impulsiveness questionnaire (Impulsiveness, Venturesomeness and Empathy) with a Spanish sample of 742 males and 1.075 females, through exploratory and confirmatory factorial analysis. In relation to the original English data, a three-factor structure showed global congruency coefficients of 0.92 and 0.94 for men and women. Venturesomeness had a modest congruency for males (0.83). A cross-validation analytical strategy showed that the 24-item I₇ was invariant only for the female sample. A subsequent exploratory factor analysis with 24 items showed a sound factor structure. The 24-item version showed the best and most robust structure and similar internal consistency coefficients in regard to the 54-item version. No important differences were founded between I₇ long and short versions with impulsiveness scales of ZKPQ, BIS-10 and SPSRQ.     

Gender, neuroticism and speed-accuracy tradeoffs on a choice reaction-time task

The Eysenck Personality Questionnaire and Personality Inventory were administered to 96 college students, along with a choice reaction-time (RT)/movement-time task. The results show that females and Ss high on neuroticism made significantly fewer ballistic errors on the RT. The implications for RT research are discussed.     

Neuropsychological Behavioral Inhibition System (BIS) and Behavioral Approach System (BAS) assessment: a shortened Sensitivity to Punishment and Sensitivity to Reward Questionnaire version (SPSRQ-20)

This research was designed to investigate the items and factor structure of the Sensitivity to Punishment and Sensitivity to Reward Questionnaire (SPSRQ) proposed by Torrubia, Avila, Moltó, and Caseras ( 2001 ), as a measure of the behavioral inhibition system and behavioral activation system in Gray's reinforcement sensitivity theory. Recent studies that analyzed this instrument by exploratory and confirmatory factor analysis suggest the need for structural refinement. The Spanish version of the SPSRQ was analyzed by exploratory and confirmatory procedures in calibration (n = 2,102) and validation (n = 746) independent samples. In addition, convergent and discriminant validity was evaluated with the Zuckerman-Kuhlman Personality Questionnaire (Zuckerman, Kuhlman, Teta, Joireman, & Kraft, 1993 ), the Impulsiveness, Venturesomeness and Empathy Inventory (S. B. G. Eysenck, Pearson, Easting, & Allsopp, 1985 ) the Neuroticism, Extraversion and Openness Five Factor Inventory (Costa & McCrae, 1992 ), and the Barratt Impulsiveness Scales (Barratt, 1985 ). Results showed the robustness of a 20-item structure of the SPSRQ, with satisfactory fit adjustment, validity, and reliability. The findings are discussed in terms of the better functioning and sound psychometric properties of the SPSRQ 20-item version for Gray's personality theory.