Personality disorders II - research Flashcards
Coid et al. (2006)
Method
The Structured Clinical Interview for DSM-IV Axis II disorders was used to measure personality disorder in 626 persons aged 16-74 years in households in England, Scotland and Wales, in atwo-phase survey.
Results
The weighted prevalence of personality disorder was 4.4% (95% CI 2.9-6.7). Rates were highest among men, separated and unemployed participants in urban locations. High use of healthcare services was confounded by comorbid mental disorder and substance misuse. Cluster B disorders were associated with early institutional care and criminality.
Conclusions
Personality disorder is common in the community especially in urban areas. Services are normally restricted to symptomatic, help-seeking individuals, but a vulnerable group with cluster B disorders can be identified early are in care during childhood and enter the criminal justice system when young. This suggests the need for preventive interventions at the public mental health level.
Volkert et al. (2018)
Method
We searched PsycINFO, PSYNDEX and Medline for studies that used standardised diagnostics (DSM-IV/-5, ICD-10) to report prevalence rates of personality disorders in community populations in Western countries. Prevalence rates were extracted and aggregated by random-effects models. Meta-regression and sensitivity analyses were performed and publication bias was assessed.
Results
The final sample comprised ten studies, with a total of 113 998 individuals. Prevalence rates were fairly high for any personality disorder (12.16%; 95% CI, 8.01–17.02%) and similarly high for DSM Clusters A, B and C, between 5.53 (95% CI, 3.20–8.43%) and 7.23% (95% CI, 2.37–14.42%). Prevalence was highest for obsessive–compulsive personality disorder (4.32%; 95% CI, 2.16–7.16%) and lowest for dependent personality disorder (0.78%; 95% CI, 0.37–1.32%). A low prevalence was significantly associated with expert-rated assessment (versus self-rated) and reporting of descriptive statistics for antisocial personality disorder.
Conclusions
Epidemiological studies on personality disorders in community samples are rare, whereas prevalence rates are fairly high and vary substantially depending on samples and methods. Future studies investigating the epidemiology of personality disorders based on the DSM-5 and ICD-11 and models of personality functioning and traits are needed, and efficient treatment should be a priority for healthcare systems to reduce disease burden.
Tyrer et al. (2015)
Personality disorders are common and ubiquitous in all medical settings, so every medical practitioner will encounter them frequently. People with personality disorder have problems in interpersonal relationships but often attribute them wrongly to others. No clear threshold exists between types and degrees of personality dysfunction and its pathology is best classified by a single dimension, ranging from normal personality at one extreme through to severe personality disorder at the other. The description of personality disorders has been complicated over the years by undue adherence to overlapping and unvalidated categories that represent specific characteristics rather than the core components of personality disorder. Many people with personality disorder remain undetected in clinical practice and might be given treatments that are ineffective or harmful as a result. Comorbidity with other mental disorders is common, and the presence of personality disorder often has a negative effect on course and treatment outcome. Personality disorder is also associated with premature mortality and suicide, and needs to be identified more often in clinical practice than it is at present.
Grant et al. (2008)
Methods
Face-to-face interviews with 34,653 adults participating in the Wave 2 National Epidemiologic Survey on Alcohol and Related Conditions.
Results
Prevalence of lifetime BPD was 5.9% (99% CI: 5.4–6.4). There were no differences in the rates of BPD among men (5.6%, 99% CI: 5.0–6.2) and women (6.2%, 99% CI: 5.6–6.9). BPD was more prevalent among Native American men, younger and separated/divorced/widowed adults, and those with lower incomes and education, and less prevalent among Hispanic men and women and Asian women. BPD was associated with substantial mental and physical disability, especially among women. High co-occurrence rates of mood and anxiety disorders with BPD were similar. With additional comorbidity controlled, associations with bipolar disorder and schizotypal and narcissistic PDs remained strong and significant. Associations of BPD with other specific disorders were no longer significant or were considerably weakened.
Conclusions
Prevalence of BPD in the general population is much greater than previously recognized, equal prevalent among men and women, and associated with considerable mental and physical disability, especially among women. Unique and common factors may differentially contribute to disorder-specific comorbidity with BPD and some of these associations appear to be sex-specific. There is a need for future epidemiologic, clinical and genetically-informed studies to identify unique and common factors that underlie disorder-specific comorbidity with BPD. Important sex differences observed in rates of and associations with BPD can inform more focused, hypothesis-driven investigations of these factors.
Fazel et al. (2008)
Methods and Findings
We searched for surveys of the prevalence of psychotic illness, major depression, alcohol and drug dependence, and personality disorder that were based on interviews of samples of unselected homeless people. We searched bibliographic indexes, scanned reference lists, and corresponded with authors. We explored potential sources of any observed heterogeneity in the estimates by meta-regression analysis, including geographical region, sample size, and diagnostic method. Twenty-nine eligible surveys provided estimates obtained from 5,684 homeless individuals from seven countries. Substantial heterogeneity was observed in prevalence estimates for mental disorders among the studies (all Cochran’s χ2 significant at p < 0.001 and all I2 > 85%). The most common mental disorders were alcohol dependence, which ranged from 8.1% to 58.5%, and drug dependence, which ranged from 4.5% to 54.2%. For psychotic illness, the prevalence ranged from 2.8% to 42.3%, with similar findings for major depression. The prevalence of alcohol dependence was found to have increased over recent decades.
Conclusions
Homeless people in Western countries are substantially more likely to have alcohol and drug dependence than the age-matched general population in those countries, and the prevalences of psychotic illnesses and personality disorders are higher. Models of psychiatric and social care that can best meet these mental health needs requires further investigation.
Weissman (1993)
Reviews the problems in epidemiologic studies of personality disorders (PDs) and the available epidemiologic data on rates and associated risk factors. Although this 1990 update shows the availability of more data, only about 1,300 Ss with PDs have been studied, and only 6 methods of assessment have been used. The overall lifetime rate of an Axis II disorder is in the range of about 10/100–23/100. Paranoid, schizoid, and narcissistic PDs are uncommon, with a lifetime rate of less than 1/100. The data are best for antisocial personality, which suggests a lifetime rate of 2/100–3/100 in the US, Canada, and New Zealand, and a considerably lower rate in Taiwan. The possibility of developing an epidemiology of PD based on community studies is addressed.
Paris (2003)
Personality disorders cause dysfunction over the course of adult life. A chronic course of disorder tends to be associated with an early onset, and personality disorders are preceded by precursor symptoms in childhood. Long-term outcome varies by personality disorder category: antisocial and borderline personality tend to remit with age, an improvement that is not seen in other diagnoses. The chronicity of personality disorders can usefully guide treatment planning, and psychotherapy for personality disorders can focus on rehabilitation.
Doering (2018)
Objective Borderline personality disorder (BPD) occurs in 0.7% to 3.5% of the general population. Patients with BPD experience excessive comorbidity of psychiatric and somatic diseases and are known to be high users of health care services. Because of a range of challenges related to adverse health behaviors and their interpersonal style, patients with BPD are often regarded as “difficult” to interact with and treat optimally. Methods This narrative review focuses on epidemiological studies on BPD and its comorbidity with a specific focus on somatic illness. Empirically validated treatments are summarized, and implementation of specific treatment models is discussed. Results The prevalence of BPD among psychiatric inpatients (9%-14%) and outpatients (12%-18%) is high; medical service use is very frequent, annual societal costs vary between euro11,000 and euro28,000. BPD is associated with cardiovascular diseases and stroke, metabolic disease including diabetes and obesity, gastrointestinal disease, arthritis and chronic pain, venereal diseases, and HIV infection as well as sleep disorders. Psychotherapy is the treatment of choice for BPD. Several manualized treatments for BPD have been empirically validated, including dialectical behavior therapy, transference-focused psychotherapy, mentalization-based therapy, and schema-focused therapy. Conclusions Health care could be substantially improved if all medical specialties would be familiar with BPD, its pathology, medical and psychiatric comorbidities, complications, and treatment. In mental health care, several empirically validated treatments that are applicable in a wide range of clinical settings are available.
Lewis et al. (2019)
Method
Naturalistic study of hospital presentations for mental health in a large community catchment. Mixed-effects Cox regression and survival curves were generated to examine risk of readmission for each group.
Results
Of 2894 people presenting to hospital, patients with personality disorder represented 20.5% of emergency and 26.6% of in-patients. Patients with personality disorder or psychoses were 2.3 times (95% CI 1.79-2.99) more likely than others to re-present within 28 days. Personality disorder diagnosis increases rate of readmission by a factor of 8.7 (s.e. = 0.31), marginally lower than psychotic disorders (10.02, s.e. = 0.31).
Conclusions
Personality disorders place significant demands on in-patient and emergency departments, similar to that of psychoses in terms of presentation and risk of readmission.Declaration of interestNone.
Gawda (2018)
This article reviews cross-cultural research on personality disorders. The concept of personality disorders is discussed in terms of whether they are universal phenomena or specific to Western society. Then, research on the prevalence of personality disorders in North America, South America, Europe, Asia, Africa, and Australia is reviewed. The overall rates of the prevalence of personality disorders range from 2.40% to 20.00%. The data document that the prevalence of borderline and obsessive-compulsive personality disorders is the highest, especially in high-income countries. The cross-cultural differences in the prevalence of the specified personality disorders are explained by its influencing factors such as race, ethnicity, social requirements, and the dimension of individualism-collectivism. The occurrence of personality disorders across cultures suggests some degree of psychological unity, and in turn, similarities in the neurobiological mechanisms of personality disorders
Gawda and Czubak (2017)
The aim of the present study is to establish the prevalence of personality disorders (PDs) in a healthy (nonclinical) Polish population, to examine sex difference in PDs, and to show the structure of clusters which PDs form with regard to men and women. A large sample of 1460 individuals of age between 18 and 65 years was examined. The Structured Clinical Interview for Axis II was used to obtain information on PDs, the Mini International Neuropsychiatric Interview to obtain information on other disorders, and an interview to record demographic data. Results show that approximately 9% of the sample had at least one PD (the overall rate is 8.9%) and rates on sex differences in PDs are similar to other European and North American countries. The most prevalent PDs are obsessive-compulsive (9.6%), narcissistic (7%), and borderline (7%). Results show the considerable comorbidity of PDs which means that about 9% of the adult population have at least one PD and in fact they display features of many specific PDs. A factor analysis revealed that 12 PDs form different clusters in men and women.
Paris (2007)
Personality traits are influenced by gender, and these differences are unlikely to be artefacts. Gender effects on traits also shape differences in the prevalence of common mental disorders, so that internalizing disorders are more common in females, while externalizing disorders are more common in males. Finally, gender effects influence the prevalence of specific personality disorders. These differences have clinical implications
Holthausen and Habel (2018)
Recent Findings
Empirical findings on sex differences in personality disorders are inconsistent and appear to be highly dependent on study settings. Current studies have mainly focused on borderline and antisocial personality disorder and the question whether these are sex-specific representations of a common substrate. In general, sexes differ in the manifestation of personality disorders as well as in comorbidities. Criticism of the established categorical model led to an additional dimensional model of personality disorders in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition.
Summary
Investigations on sex differences in personality disorders are sparse and mainly limited to antisocial and borderline personality disorder. The introduction of a dimensional model offers the chance to re-think the construct of “personality disorder” and thereby also opens the possibility for a better understanding of sex differences.
Logan and Taylor (2017)
Working with women in secure services is an infrequent subject of research and discussion in the forensic mental health literature. There are several reasons for this, which will be considered in the introduction to this paper. However, a consequence of this situation is that there remains a lack of clarity in key areas of practice in relation to working with women in secure services, and working with women with personality disorder specifically: how women with personality disorder may present in secure services compared to men, therefore, the particular skills required of the practitioners who work with women and the main design features of the services within which they are managed. The body of this paper attempts to summarise important issues in each of these areas in order to inform future debate and developments in the field.
Feingold (1994)
Four meta-analyses were conducted to examine gender differences in personality in the literature (1958-1992) and in normative data for well-known personality inventories (1940-1992). Males were found to be more assertive and had slightly higher self-esteem than females. Females were higher than males in extraversion, anxiety, trust, and, especially, tender-mindedness (e.g., nurturance). There were no noteworthy sex differences in social anxiety, impulsiveness, activity, ideas (e.g., reflectiveness), locus of control, and orderliness. Gender differences in personality traits were generally constant across ages, years of data collection, educational levels, and nations.
Smith et al. (2018)
Psychopathy is considered an essential construct in forensic work (Gacono, 2016). Most methodologically sound studies have involved males rather than females (Smith et al., 2014). Gender differences have been found to be, and continue to be considered important in the assessment and management of forensic populations (Cunliffe et al., 2016). Male psychopaths present as pathologically narcissistic whereas female psychopaths manifest a malignant form of hysteria. Both are pathologically self-focused; however, the grandiosity in males is contrasted by women‘s negative self-view. In the current study, male and female psychopaths (males = N = 44; PCL-R M = 33.13; females = N = 46; PCL-R M = 32.93) were compared using select Comprehensive System Rorschach variables. Female psychopaths produced more painful rumination (SumV), helplessness (SumY), and poor self-regard (EGOI ≥ .44 & Fr + rF = 0) than the males. Males were more detached (SumT) than females. Implications for future research, recommendations for these populations, and suggestions for using the PCL-R to assess female offenders are discussed.
Grijalva et al. (2015)
Despite the widely held belief that men are more narcissistic than women, there has been no systematic review to establish the magnitude, variability across measures and settings, and stability over time of this gender difference. Drawing on the biosocial approach to social role theory, a meta-analysis performed for Study 1 found that men tended to be more narcissistic than women (d = .26; k = 355 studies; N = 470,846). This gender difference remained stable in U.S. college student cohorts over time (from 1990 to 2013) and across different age groups. Study 1 also investigated gender differences in three facets of the Narcissistic Personality Inventory (NPI) to reveal that the narcissism gender difference is driven by the Exploitative/Entitlement facet (d = .29; k = 44 studies; N = 44,108) and Leadership/Authority facet (d = .20; k = 40 studies; N = 44,739); whereas the gender difference in Grandiose/Exhibitionism (d = .04; k = 39 studies; N = 42,460) was much smaller. We further investigated a less-studied form of narcissism called vulnerable narcissism—which is marked by low self-esteem, neuroticism, and introversion—to find that (in contrast to the more commonly studied form of narcissism found in the DSM and the NPI) men and women did not differ on vulnerable narcissism (d = −.04; k = 42 studies; N = 46,735). Study 2 used item response theory to rule out the possibility that measurement bias accounts for observed gender differences in the three facets of the NPI (N = 19,001). Results revealed that observed gender differences were not explained by measurement bias and thus can be interpreted as true sex differences. Discussion focuses on the implications for the biosocial construction model of gender differences, for the etiology of narcissism, for clinical applications, and for the role of narcissism in helping to explain gender differences in leadership and aggressive behavior. Readers are warned against overapplying small effect sizes to perpetuate gender stereotypes
Costa et al. (2001)
Secondary analyses of Revised NEO Personality inventory data from 26 cultures (N =23,031) suggest that gender differences are small relative to individual variation within genders; differences are replicated across cultures for both college-age and adult samples, and differences are broadly consistent with gender stereotypes: Women reported themselves to be higher in Neuroticism, Agreeableness, Warmth, and Openness to Feelings, whereas men were higher in Assertiveness and Openness to Ideas. Contrary to predictions from evolutionary theory, the magnitude of gender differences varied across cultures. Contrary to predictions from the social role model, gender differences were most pronounced in European and American cultures in which traditional sex roles are minimized. Possible explanations for this surprising finding are discussed, including the attribution of masculine and feminine behaviors to roles rather than traits in traditional cultures.
Goodwin and Gotlib (2004)
The goal of the study was to determine the association between gender and the Big Five personality factors, and to identify the role of personality factors in the association between gender and depression among adults in the United States. Data were drawn from the Midlife Development in the United States Survey (N=3032). Multivariate analysis of variance (MANOVA) was used to examine gender differences on the Big Five personality factors (i.e. agreeableness, neuroticism, openness to experience, extraversion, and conscientiousness). Multivariate logistic regression analyses were conducted to examine the relation between gender and depression, and to test whether this association is moderated by neuroticism. Levels of neuroticism, agreeableness, extraversion, and conscientiousness were significantly higher among females than among males; in contrast, level of openness to experience was significantly higher among males. Female gender was associated with increased odds of experiencing depression. Results showed that neuroticism played a significant contributory role in the relationship between being female and major depression, though the role of gender remained statistically significant after adjustment. These data suggest that gender differences in personality factors, specifically neuroticism, may play a key role in the well-documented gender difference in depression. Our findings indicate that neuroticism may moderate the association between female gender and increased risk of depression among adults. These findings require replication using longitudinal data.
Zai and Jan (2019)
The educational success of any person seems to depend on residence. It is usually seen that students residing in urban areas enjoy more facilities than rural pupils, so they show higher academic success. Along with residence,
many other factors such as students’ personality type and gender matter a lot in academic success. Personality is considered as a fundamental pattern of all-round development of a person. An attempt in this regard was made to examine difference in academic achievement of rural and urban students of secondary level according to their personality traits. Students of rural and urban areas of 9th grades enrolled in public sector schools at secondary level in district Mianwali constitute population. 935 students were selected as sample through stratified random sampling technique. 752 students responded on Big five (BFI) Personality Inventory resulting 80% response
rate. Descriptive and inferential statistics were used for data analysis. Consciousness, neuroticism, agreeableness, personality traits were higher in students of rural area. Openness, extraversion personality traits were higher
in urban students. Significant difference between openness personality trait and gender of students while no difference in consciousness, extraversion, agreeableness, neuroticism personality traits were observed.
Madsen et al. (2018)
We examined the link between neuroticism and fronto-limbic white matter asymmetry.
Neuroticism showed a sex-specific relationship with cingulum FA asymmetry.
In boys, neuroticism was linked to decreased left relative to right cingulum FA.
In girls, neuroticism was linked to increased left-to-right cingulum FA.
The neurobiological significance of these sex differences needs to be elucidated.
Shchebetenko et al. (2019)
The Big Five Inventory–2 (BFI-2) is a recently published 60-item questionnaire that measures personality traits within the five-factor model framework. An important aspect of the BFI-2 is that it measures the traits at both the domain and facet levels and also controls acquiescence bias via the balanced number of true- and false-keyed items across the domains and facets. The current research evaluates factorial measurement invariance of a Russian version of the BFI-2 across sex and age within samples of 1,024 university students (Study 1) and 1,029 Internet users (Study 2). Across these samples, men scored lower on the domains of negative emotionality and agreeableness and slightly higher on extraversion. Sex differences were also obtained on various facets. In the Internet sample, age correlated modestly with several Big Five domains in accordance with the well-documented maturity principle. The newly developed Russian version of BFI-2 showed good reliability and validity across both samples. Moreover, random intercept exploratory factor analyses showed that the BFI-2 displayed a hierarchical five-domain-15-facet structure that demonstrated strict measurement invariance across sex and age.
Livesley et al. (1998)
Methods Eighteen lower-order traits were assessed using the Dimensional Assessment of Personality Disorder–Basic Questionnaire in samples of 656 personality disordered patients, 939 general population subjects, and a volunteer sample of 686 twin pairs.
Results Principal components analysis yielded 4 components, labeled Emotional Dysregulation, Dissocial Behavior, Inhibitedness, and Compulsivity, that were similar across the 3 samples. Multivariate genetic analyses also yielded 4 genetic and environmental factors that were remarkably similar to the phenotypic factors. Analysis of the residual heritability of the lower-order traits when the effects of the higher-order factors were removed revealed a substantial residual heritable component for 12 of the 18 traits.
Conclusions The results support the following conclusions. First, the stable structure of traits across clinical and nonclinical samples is consistent with dimensional representations of personality disorders. Second, the higher-order traits of personality disorder strongly resemble dimensions of normal personality. This implies that a dimensional classification should be compatible with normative personality. Third, the residual heritability of the lower-order traits suggests that the personality phenotypes are based on a large number of specific genetic components.
Sher et al. (2015)
Gender is an important variable in the study of mental health because of the actual and perceived differences between men and women. Relatively little is known how males and females differ in their manifestations of antisocial personality disorder (ASPD). Demographic and clinical features of 323 participants with ASPD were assessed and recorded. Women had fewer episodes of antisocial behavior involving or not involving police, higher scores on the Childhood Trauma Questionnaire (CTQ) and on Emotional Abuse and Sexual Abuse subscales of the CTQ compared to men. CTQ scores positively correlated with the number of episodes of antisocial behavior involving police in men but not in women. The percentage of patients with comorbid borderline and histrionic personality disorders was higher and the percentage of participants with cocaine use disorder was lower among women compared to men. Comorbid alcohol use disorder was frequent in both groups, while a higher percentage of women had comorbid mood disorders compared to men. Logistic regression analysis demonstrates that CTQ scores, histrionic personality disorder, and antisocial behavior involving the police drive the difference between the groups. Our findings indicate that treatment of individuals with ASPD should focus on the management of comorbid psychiatric disorders
Sylvers et al. (2010)
We investigated the autonomic indicators of antisocial personality disorder (APD) features in a mixed gender student sample. One hundred college students (50 men, 50 women) were administered an interview of APD and self-report measures of aggression and psychopathy. Participants completed a passive coping task and viewed emotionally valenced slideshows while their electrodermal activity (EDA), pre-ejection period (PEP), and respiratory sinus arrhythmia (RSA) were measured. Associations between APD features and autonomic reactivity were examined, controlling for aggression and psychopathy. APD features were associated with EDA hyporeactivity in men, but not women, during passive coping. While viewing threatening slides, APD features were associated with RSA hyperreactivity in women and with PEP hyperreactivity in men. APD features were associated with RSA hyperreactivity in women, but not men, while viewing slides of others in distress. These findings suggest that APD features are characterized by parasympathetic nervous system dysfunction in women but sympathetic nervous system dysfunction in men.
Yang et al. (2014)
Methods: Structured interviews were conducted among 882 heroin dependent users in two compulsory isolation settings in Changsha, China. Descriptive statistics were employed to report sample characteristics by gender. Bivariate relationships were examined between co-occurring ASPD and variables measuring demographic, drug use, and psychiatric co-morbidities. Multivariate logistic regressions with stepwise forward method were conducted to determine independent predictors for co-occurring ASPD. All analyses examining correlates of co-occurring ASPD were conducted for the total, the male and the female participants respectively to detect both the common and the unique correlates of ASPD by gender.
Results: Of the total participants, 41.4% (54.2% of males and 15.4% of females) met the DSM-IV criteria of ASPD. For male participants, lower educational level, unemployment, unmarried, younger age at first heroin use, previous history of compulsory treatment, larger amounts of heroin used per day and poly-drug abuse during past month before admission, as well as psychiatric co-morbidities of lifetime major depressive disorder and borderline personality disorder were independent predictors for co-occurring ASPD; while for female participants, only three variables: younger age at first heroin use, paranoid personality disorder and borderline personality disorder were independent predictors for co-occurring ASPD.
Conclusions: Gender differences in prevalence and correlates of ASPD among heroin dependent users were detected. The findings highlight a need for gender-specific interventions
Landheim et al. (2003)
Objective: Gender differences in the prevalence of Axis I and 11 disorders in poly-substance abusers and pure alcoholics and between these two groups are explored. Method. A consecutive sample (n = 260) of in- and outpatients from two Norwegian counties were assessed by CIDI (Axis I disorders) and MCMI-II (Axis 11 disorders). Results: Major depression, post-traumatic stress disorder (PTSD), and eating disorders were significantly more prevalent in women than in men. A significantly higher prevalence of antisocial, passive-aggressive, and borderline personality disorders (PD) was observed among poly-substance abusers, whereas pure alcoholics were found to have dependent PDs more often. Female poly-substance abusers differed significantly from all other substance abusers by suffering more often from major depression, simple phobia, PTSD and borderline PD. Male poly-substance abusers more often presented antisocial PD and less often Cluster C disorders than all other substance abusers. Female pure alcoholics more often had major depression and Cluster C disorders than all other substance abusers. Male pure alcoholics presented less often with Axis I disorders, major depression, and PTSD, but more often with Cluster A disorders, in particular schizoid PD, than all other substance abusers. Conclusion: The pattern of comorbid disorders is clearly different between male and female poly-substance abusers and pure alcoholics. This implies that these four subgroups have important differences in their treatment needs.
McCredie and Morey (2019)
The present study was intended to assess the reliability of clinician judgments, with a particular interest in how such judgments vary by the gender of the case vignette and clinician. A national sample of 123 mental health professionals (57.7% male) provided clinical judgments on 12 case vignettes primarily representing personality pathology; two identical versions of each vignette were prepared, with the only difference being the use of masculine or feminine pronouns identifying the client. Clinical judgments included evaluations of adaptive functioning, long-term prognostic assessments, short-term risk evaluations, and treatment recommendations. Analyses included intraclass correlations between clinicians to assess reliability, as well as an examination of the variance of clinical judgments as a function of the identified gender of the case and the gender of the participating clinician. No significant two-way interactions were found between case gender and clinician gender in predicting the clinical judgments. A significant main effect of case gender in predicting vocational functioning was observed, such that female cases were rated as having better estimated vocational functioning than male cases. In addition, a significant main effect of clinician gender in predicting aggression and violence risk was found, such that ratings by female clinicians were higher than ratings by male clinicians. Results offer little if any evidence to suggest the influence of client or clinician gender on the majority of clinical judgments made in the present study. However, these results bear replication, particularly in light of the two significant main effects that did emerge
Jane et al. (2007)
The authors examined gender bias in the diagnostic criteria for Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision; American Psychiatric Association, 2000) personality disorders. Participants (N=599) were selected from 2 large, nonclinical samples on the basis of information from self-report questionnaires and peer nominations that suggested the presence of personality pathology. All were interviewed with the Structured Interview for DSM-IV Personality (B. Pfohl, N. Blum, & M. Zimmerman, 1997). Using item response theory methods, the authors compared data from 315 men and 284 women, searching for evidence of differential item functioning in the diagnostic features of 10 personality disorder categories. Results indicated significant but moderate measurement bias pertaining to gender for 6 specific criteria. In other words, men and women with equivalent levels of pathology endorsed the items at different rates. For 1 paranoid personality disorder criterion and 3 antisocial criteria, men were more likely to endorse the biased items. For 2 schizoid personality disorder criteria, women were more likely to endorse the biased items.
Dokucu and Cloninger (2019)
Recent findings The strong association of any personality disorders with poor health in cross-sectional and community-based studies is now confirmed by personality disorder predicting future deterioration in longitudinal studies. Borderline personality disorder has been studied most frequently, but recent data suggest that severity of any personality disorder is associated with poor and worsening health.
Summary Personality disorder is associated with the full range of physical, mental, and social disorders. Greater attention to the common features of personality disorders, which are crucial for the self-regulation of behavior, would facilitate more effective health promotion and disease prevention across all medical specialties, thereby helping to relieve the burdens of chronic common diseases.
Quirk et al. (2016)
Methods:
Individual personality disorders (paranoid, schizoid, schizotypal, histrionic, narcissistic, borderline, antisocial, avoidant, dependent, obsessive-compulsive), lifetime mood, anxiety, eating and substance misuse disorders were diagnosed utilising validated semi-structured clinical interviews (Structured Clinical Interview for DSM-IV-TR Axis I Disorders, Research Version, Non-patient Edition and Structured Clinical Interview for DSM-IV Axis II Personality Disorders). The prevalence of personality disorders and Clusters were determined from the study population (n = 768), and standardised to the Australian population using the 2011 Australian Bureau of Statistics census data. Prevalence by age and the association with mood, anxiety, eating and substance misuse disorders was also examined.
Results:
The overall prevalence of personality disorders in women was 21.8% (95% confidence interval [CI]: 18.7, 24.9). Cluster C personality disorders (17.5%, 95% CI: 16.0, 18.9) were more common than Cluster A (5.3%, 95% CI: 3.5, 7.0) and Cluster B personality disorders (3.2%, 95% CI: 1.8, 4.6). Of the individual personality disorders, obsessive-compulsive (10.3%, 95% CI: 8.0, 12.6), avoidant (9.3%, 95% CI: 7.1, 11.5), paranoid (3.9%, 95% CI: 3.1, 4.7) and borderline (2.7%, 95% CI: 1.4, 4.0) were among the most prevalent. The prevalence of other personality disorders was low (⩽1.7%). Being younger (25–34 years) was predictive of having any personality disorder (odds ratio: 2.36, 95% CI: 1.18, 4.74), as was being middle-aged (odds ratio: 2.41, 95% CI: 1.23, 4.72). Among the strongest predictors of having any personality disorder was having a lifetime history of psychiatric disorders (odds ratio: 4.29, 95% CI: 2.90, 6.33). Mood and anxiety disorders were the most common comorbid lifetime psychiatric disorders.
Conclusions:
Approximately one in five women was identified with a personality disorder, emphasising that personality disorders are relatively common in the population. A more thorough understanding of the distribution of personality disorders and psychiatric comorbidity in the general population is crucial to assist allocation of health care resources to individuals living with these disorders.
Moran et al. (2004)
More than 15 years ago, findings from the Epidemiological Catchment Area Study indicated that antisocial personality disorder (APD) is more prevalent among persons with schizophrenia than in the general population. The present study analyzed data from a multisite investigation to examine the correlates of APD among 232 men with schizophrenic disorders, three-quarters of whom had committed at least one crime. Comparisons of the men with and without APD revealed no differences in the course or symptomatology of schizophrenia. By contrast, multivariate models confirmed strong associations of comorbid APD with substance abuse, attention/concentration problems, and poor academic performance in childhood; and in adulthood with alcohol abuse or dependence and deficient affective experience (a personality style indexed by lack of remorse or guilt, shallow affect, lack of empathy, and failure to accept responsibility for one’s own actions). At first admission, men with schizophrenia and APD presented a long history of antisocial behavior that included nonviolent offending and substance misuse, and an emotional dysfunction that is thought to increase the risk of violence toward others. Specific treatments and management strategies are indicated.
Forbes et al. (2016)
We propose a novel developmentally informed framework to push research beyond a focus on comorbidity between discrete diagnostic categories and to move toward research based on the well-validated dimensional and hierarchical structure of psychopathology. For example, a large body of research speaks to the validity and utility of the internalizing and externalizing spectra as organizing constructs for research on common forms of psychopathology. The internalizing and externalizing spectra act as powerful explanatory variables that channel the psychopathological effects of genetic and environmental risk factors, predict adaptive functioning, and account for the likelihood of disorder-level manifestations of psychopathology. As such, our proposed theoretical framework uses the internalizing and externalizing spectra as central constructs to guide future psychopathology research across the life span. The framework is particularly flexible, because any of the facets or factors from the dimensional and hierarchical structure of psychopathology can form the focus of research. We describe the utility and strengths of this framework for developmental psychopathology in particular and explore avenues for future research.
Asherson et al. (2014)
Methods:
We searched four databases, referred to the new Diagnostic and Statistical Manual of Mental Disorders, 5th edition, used other relevant literature, and referred to our own clinical experience.
Results:
ADHD coexists in 20% of adults with BD or BPD. BD is episodic, with periods of normal mood although not necessarily function. In patients with comorbid ADHD-BD, ADHD symptoms are apparent between BD episodes. BPD and ADHD are associated with chronic trait-like symptoms and impairments. Overlapping symptoms of BPD and ADHD include impulsivity and emotional dysregulation. Symptoms of BPD but not ADHD include frantically avoiding real/imagined abandonment, suicidal behavior, self-harm, chronic feelings of emptiness, and stress-related paranoia/severe dissociation. Consensus expert opinion recommends that BD episodes should be treated first in patients with comorbid ADHD, and these patients may need treatment in stages (e.g. mood stabilizer[s], then a stimulant/atomoxetine). Data is scarce and mixed about whether stimulants or atomoxetine exacerbate mania in comorbid ADHD-BD. BPD is primarily treated with psychotherapy. Principles of dialectical behavioral treatment for BPD may successfully treat ADHD in adults, as an adjunct to medication. No fully evidence-based pharmacotherapy exists for core BPD symptoms, although some medications may be effective for individual symptom domains, e.g. impulsivity (shared by ADHD and BPD). In our experience, treatment of ADHD should be considered when treating comorbid personality disorders.
Conclusions:
It is important to accurately diagnose ADHD, BD, and BPD to ensure correct targeting of treatments and improvements in patient outcomes. However, there is a shortage of data about treatment of adults with ADHD and comorbid BD or BPD.