Personality and group influences on self-reported delinquent behaviour

The results of two data sets (n=217 and n=209) are reported in which the links between the Eysenckian personality factors (psychoticism, extraversion, and neuroticism), identification with delinquent peers, and self-reported delinquency among high school students are examined. The factor structure of a delinquent identity measure is reported in Study 1 and partly confirmed in Study 2, suggesting at least two stable components: delinquent companionship and delinquent behavioural norms. Both of these measures were found to possess concurrent validity. Results from both samples showed that these factors, as well as psychoticism, made significant contributions to explaining self-reported delinquency. The results are discussed with reference to social identity theory and the nature of (Eysenckian) psychoticism.     

Stability of the Millon Adolescent Personality Inventory in an incarcerated delinquent population

Clinical use of the Millon Adolescent Personality Inventory (MAPI) depends on computerized interpretation of the pattern of scale score elevations in the profile beyond certain cutoff scores rather than the elevations of single scales. There has been no reported work on the stability of the scale scores or the stability of the 2-point codes in a delinquent population. The MAPI was administered to 46 incarcerated male juvenile delinquents and was readministered after a period of 2 to 4 weeks. The test-retest correlations of the base-rate scale scores ranged from .33 to .89 with a mean of .74, which compare favorably to Millon's (1982) standardization sample. However, only 41% of the 2-point codes were judged to be congruent between administrations. The poor congruence of the 2-point codes across administrations raises doubts about interpretive statements based on these codes.     

Personality characteristics of alcohol dependent inpatients: relationship of MCMI subtypes to self-reported drinking behavior.

Recent cluster analytic research with alcoholic inpatients has demonstrated the existence of several Millon Clinical Multiaxial Inventory (MCMI) clusters that appear to be consistent across different subject samples. The validity of these data would be strengthened by a statistical demonstration of the similarity of attained clusters across studies--a demonstration of concordance of subject classification across different clustering techniques on the same data set- and the inclusion of external, independent measures against which to evaluate the predictive validity of the cluster typology. We found a high level of concordance in subject classification across different clustering methods on the same data set and a high level of agreement with cluster typologies attained in previous studies. Subsequent multivariate analyses employing independent scales measuring various aspects of alcohol use confirmed differences among cluster members on perceived benefits of alcohol use and deleterious effects of alcohol use. The prominent differences in alcohol use along with a rationale for their development are discussed.     

Personality characteristics of ADHD adults assessed with the Millon Clinical Multiaxial Inventory-II: evidence of four distinct subtypes

This study compared the personality characteristics of 104 adults diagnosed with attention deficit hyperactivity disorder (ADHD). Personality features were assessed with the MCMI-II (Millon, 1987). Participants were divided into 4 groups based on the presence of persisting oppositional defiant disorder (ODD) or other comorbid diagnoses (ADHD only, ADHD-comorbid, ADHD-ODD, ADHD-ODD-comorbid). Significant differences between these groups were present for 9 of the 13 MCMI-II personality scales, resulting in 4 modal personality styles. ADHD-only adults evidenced mild histrionic traits, whereas the ADHD-comorbid group was more often avoidant and dependent in personality style. ADHD-ODD adults showed histrionic, narcissistic, aggressive-sadistic, and negativistic traits whereas the ADHD-ODD-comorbid group had a combination of avoidant, narcissistic, antisocial, aggressive-sadistic, negativistic, and self-defeating personality features. Implications for treatment are discussed.     

Personality characteristics of opiate addicts

18 Ss dependent on opiate drugs completed three personality trait questionnaires, and were compared with 18 controls matched for demographic variables. The drug dependent sample were significantly higher than controls in psychoticism, but lower in extraversion and telic dominance. No difference between the groups was found in locus of control. These data are compared with existing research.     

Personality characteristics of research volunteers

We evaluated Big Five personality factor differences between research volunteers and nonvolunteers. In the first study, 158 military officers were asked to participate in a mail survey. The personality scores of the officers were available from an archival data set. In our second study, adult siblings from large families were invited to participate in extensive clinical epidemiological evaluations. The personality scores of volunteers (N = 55) and nonvolunteers from the same families (N = 29) were estimated from sibling ratings made by those who participated in the study. In both studies, respondents, compared to nonrespondents, were found to be significantly lower in Neuroticism and higher in Conscientiousness. The second study further indicated respondents as being higher in Extraversion and Agreeableness. Copyright © 2007 John Wiley & Sons, Ltd.     

Personality characteristics of Hare Krishnas

Personality characteristics of 132 males and 94 females of the Hare Krishna movement were assessed using the Comrey Personality Scales (CPS). Subjects were sampled from eight U.S. sites. Their age averaged about 30 years, and their time in the movement averaged 8.6 years. The most prominent and surprising finding is the hallmark characteristic of the Hare Krishna personality, a strong compulsivity trait common to both genders, which is slightly stronger in males. Reduced trust in society was exhibited by both gender averages, with slightly less trust among females. Both these averages, however, were within the normal range for individuals. With the exception of compulsivity, average male CPS scores were within the normal psychological range but differed significantly from the normative male group indicating idiosyncratic traits. Average female CPS scores did not differ significantly from the normative female group except for compulsivity and trust. Study of CPS score distributions about group means supported these findings.     

Self-esteem and institutionalized delinquent offenders: the role of background characteristics.

Some of the delinquency literature sustains the assumption that inept persons doing unworthy things is the self-view held by youth offenders, "Disadvantaged" or "adverse" background characteristics are often assumed to account for low self-esteem among delinquent offenders. However, the implications of control theory suggest that youths having few bonds to people and institutions are relatively "free" to drift into delinquency without serious damage to self-esteem. The hypothesis we examined was derived from the work of control theorists: that self-esteem would be higher for offenders "removed" from conventional ties, lower for those who maintained conventional attachments. Data from 75 male delinquent offenders incarcerated at a correctional youth institution are used in testing this relationship. Our hypothesis received strong support. The implication drawn from these results is that the impact of the correctional process on self-esteem may be far less important than the myriad relationships previously established with people and institutions. These results pertaining to a special category of youth are in keeping with the reported findings on the link between deprivation and self-esteem of general youth populations.     

Personality characteristics of sheep and goats

A great deal of parapsychological research has investigated the effect, upon extrasensory perception (ESP), of the so-called ‘sheep-goat variable’ (SGV), that is, belief in the existence of ESP, either in the abstract or with respect to one's own psychic ability. However, very little purely psychological research has examined the question of possible personality differences between ‘sheep’ (the ‘believers’) and ‘goats’ (the ‘disbelievers’). Personality factors are important both as potentially confounding variables, and as independent predictors of psi-scoring which could be used in combination with the SGV.This paper reports two sets of experiments of the pilot-confirmation type: a grand total of 552 subjects were administered various personality tests plus one or other of two ‘sheep-goat scales’. Replicated results indicated that the SGV was related to extraversion-introversion and to conservatism-radicalism: sheep tend to be more extraverted and more conservative than goats, who tend towards introversion and intellectual skepticism.     

Personality characteristics of sensitivity group volunteers

Thirty-nine undergraduates who volunteered for sensitivity groups and 62 who did not were compared on 11 scales of the California Psychological Inventory. As predicted, sensitivity group members scored significantly lower on 8 of 11 scales. Differences on the other three scales were in the predicted direction but insignificant. The authors suggested that students are motivated to seek sensitivity groups because of self-perceived problems in the same way that students are who seek counseling. The assumption that the well-functioning individual joins sensitivity groups was challenged.     

Personality characteristics of young adult migraineurs

Young adults with migraine headaches and nonmigraineurs were compared by means of two questionnaire batteries (the 16 P-F and PRF) and sets of specific measures focused on stimulation-seeking and independence. A number of low correlations were obtained but overall, results tend to contradict the existence of a "migraine personality" as a measureable entity.     

Personality correlates of intimate partner violence subtypes: A latent class analysis

Perpetrators of intimate partner violence (IPV) represent a heterogeneous group who engage in a variety of aggressive acts which often co‐occur. However, few studies take this co‐occurrence into consideration. Failure to consider overlapping forms of IPV confounds understanding of risk factors for physical IPV, which in turn undermines identification, prevention, and intervention efforts. Though rarely studied in emerging adults, personality variables have recently been identified as important correlates of IPV. The primary aims of the current studies are to identify distinct subgroups of moderate and severe psychological and physical IPV and personality covariates of class membership. Two studies were conducted at different public regional universities in the northeast (n = 500; n = 497). Both samples were about two‐thirds female, approximately one‐half White, one‐fifth Black, and one‐quarter Latino, of any race. Latent Class Analysis identified three subgroups in both studies: low, moderate, and severe IPV. The severe and moderate IPV groups included those who reported threats and moderate physical IPV while the severe IPV group also included those who engaged in severe and injurious forms of physical IPV. Multinomial regression analysis showed that impulsive aggression discriminated moderate and severe from low IPV (Study 1), and more frequent emotionally abusive and controlling behavior, a hostile‐dominant interpersonal style and trait aggression discriminated among all three groups, with severe IPV having the greatest likelihood of controlling behavior and aggression (Study 2). IPV is represented by distinct subgroups that vary by severity of IPV with different personality covariates. General aggressive and domineering tendencies in relationships characterize those engaging in severe IPV.