Ten aspects of the Big Five in the Personality Inventory for DSM-5.

Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5) includes a dimensional model of personality pathology, operationalized in the Personality Inventory for DSM-5 (PID-5), with 25 facets grouped into 5 higher order factors resembling the Big Five personality dimensions. The present study tested how well these 25 facets could be integrated with the 10-factor structure of traits within the Big Five that is operationalized by the Big Five Aspect Scales (BFAS). In 2 healthy adult samples, 10-factor solutions largely confirmed our hypothesis that each of the 10 BFAS would be the highest loading BFAS on 1 and only 1 factor. Varying numbers of PID-5 scales were additional markers of each factor, and the overall factor structure in the first sample was well replicated in the second. Our results allow Cybernetic Big Five Theory (CB5T) to be brought to bear on manifestations of personality disorder, because CB5T offers mechanistic explanations of the 10 factors measured by the BFAS. Future research, therefore, may begin to test hypotheses derived from CB5T regarding the mechanisms that are dysfunctional in specific personality disorders.

The dispositional flow scale-2 as a measure of autotelic personality: an examination of criterion-related validity.

The Dispositional Flow Scale-2 (DFS-2; Jackson & Eklund, 2002) may be one of the most promising measures for assessing Csikszentmihalyi's (1990) construct of "autotelic personality." Despite strong internal validity, external validity of the DFS-2 remains open. We used 2 methods to provide evidence for external validity: (1) multiple-time assessments of experience sampling (1,856 entries generated over 7 days) to derive aggregate indices of criterion validity; and (2) single-time assessments of flow and personality for additional criterion-related validity. For single-time assessments of flow, we used a modified version of the Flow Questionnaire (Csikszentmihalyi & Larson, 1984). To assess personality, we included a measure of the Five-factor traits using the Revised NEO Personality Inventory (Costa & McCrae, 1992). A path model of NEO domains, DFS-2 global scores, and experience sampling aggregates fit the data well.

Factors of the psychopathic personality inventory: criterion-related validity and relationship to the BIS/BAS and five-factor models of personality.

Psychopathy is a personality disorder that includes interpersonal-affective and antisocial deviance features. The Psychopathic Personality Inventory (PPI) contains two underlying factors (fearless dominance and impulsive antisociality) that may differentially tap these two sets of features. In a mixed-gender sample of undergraduates and prisoners, we found that PPI fearless dominance was related to low Behavioral Inhibition System activity, high Behavioral Activation System (BAS) activity, expert prototype psychopathy scores, and primary psychopathy. Impulsive antisociality was related to high BAS activity and all psychopathy measures. High Extraversion and Openness and low Neuroticism and Agreeableness predicted fearless dominance, whereas high Neuroticism and low Agreeableness and Conscientiousness predicted impulsive antisociality. Although low levels of Agreeableness predicted both PPI factors, their differential relations with other five-factor model traits highlight differences in the way psychopathy manifests itself. Consistent with movements toward assessing personality disorder using the five-factor model, the authors report regression-based equations for the clinical assessment of these psychopathy dimensions using the NEO Personality Inventory-Revised (NEO-PI-R).

Symptoms of executive dysfunction are endemic to secondary psychopathy: an examination in criminal offenders and noninstitutionalized young adults.

Psychopathy is a heterogeneous personality disorder exhibiting deficits in passive avoidance, emotional processing, and arousal. In a mixed-gender group (N = 293) of undergraduates and prisoners, we examined the relationship of multiple indices of primary and secondary psychopathy to components of executive dysfunction as measured by the Frontal Systems and Behavior Scale (FrSBe; Grace & Malloy, 2001). After controlling for demographic variables, we found strong associations between psychopathy and components of executive dysfunction (Rs = .55 to .70). Primary psychopathy was negatively, whereas secondary psychopathy was positively, predictive of symptoms indicative of executive dysfunction. When indices of primary and secondary psychopathy and indices of executive functioning were jointly included in a factor analysis, a two-factor solution was obtained. Secondary psychopathy and all subscales of the FrSBe loaded on a single factor, whereas indices of primary psychopathy loaded solely on a second factor. These findings underscore the role of prefrontal circuitry in psychopathy, and specifically implicate executive dysfunction in secondary psychopathy.

Maladaptive correlates of the failure to forgive self and others: further evidence for a two-component model of forgiveness.

In a sample composed of 162 young adults, we examined the generalizability of an orthogonal, 2-component model of forgiveness previously reported by Ross, Kendall, Matters, Rye, and Wrobel (2004). Furthermore, we examined the relationship of these two components with maladaptive personality characteristics as measured by the Schedule for Nonadaptive and Adaptive Personality (SNAP; Clark, 1993), with an emphasis on Five-factor model markers of personality. Using multiple measures of forgiveness, principal components analysis supported a 2-component model representing self-forgiveness and other forgiveness. Despite the independence of self-forgiveness and other forgiveness, zero order correlations with SNAP scales supported convergent more than discriminant validity. In contrast, hierarchical multiple regression analyses emphasized the discriminant validity of self-forgiveness and other forgiveness. Among indices of Neuroticism, Extraversion, and Agreeableness, Negative Temperament (+) was the sole predictor of self-forgiveness. In contrast, Positive Temperament (+), Aggression (-), and Histrionic PD (-) were most associated with other forgiveness. Overall, these findings support the validity of these factors and highlight the importance of self-forgiveness in clinical assessment.

Muscle activation patterns in snapping triceps syndrome.

OBJECTIVE: To compare the muscle activation pattern in subjects with and without "snapping triceps syndrome" (dislocation of the medial head of the triceps and ulnar nerve over the medial epicondyle). DESIGN: Controlled study. SETTING: Biomechanics laboratory. PARTICIPANTS: Eight male subjects (9 elbows), with symptomatic snapping triceps and 9 male controls. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Activation pattern of the 3 triceps heads during active elbow extension at 0 degrees , 45 degrees , 70 degrees , 90 degrees , and 115 degrees of flexion, recorded by fine-wire electromyography. RESULTS: There were no significant differences between subjects and controls in the firing pattern of the triceps heads. The medial head fired first in 6 of 9 symptomatic elbows and in 7 of 9 controls at 90 degrees of flexion, and in 6 of 9 elbows of both subjects and controls at 115 degrees of flexion, positions where snapping typically occurs. There was no significant difference between the groups as to how often the medial head fired maximally. CONCLUSIONS: This study suggests the firing pattern of the triceps heads may not contribute to the pathogenesis of this syndrome. Rather, the authors believe the anatomic position of the medial head causes it to dislocate over the medial epicondyle, often resulting in ulnar neuritis.

Detecting insufficient effort using the Seashore Rhythm and Speech-Sounds Perception Tests in head injury.

This study examined the capacity of the Seashore Rhythm Test (SRT) and the Speech-Sounds Perception Test (SSPT) to detect insufficient effort in a clinical sample. Forty-six participants with financially compensable mild head injury who obtained scores indicative of insufficient effort on multiple measures were compared to 49 participants with brain injury who were not involved in litigation. Receiver operating characteristic (ROC) curve analysis indicated that both the SRT (AUC = .84) and SSPT (AUC = .80) were significant (p < .001) predictors of insufficient effort. Maximizing sensitivity and specificity, the optimal cutoff scores were 8 errors on the SRT and 10 errors on the SSPT. Combining both variables into a logistic regression function increased the diagnostic efficiency.

Psychological disturbance, incomplete effort, and compensation-seeking status as predictors of neuropsychological test performance in head injury.

Indices from the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) representing cognitive and emotional disturbance as well as incomplete effort on the Recognition Memory Test (RMT; Warrington, 1984) were examined as predictors of performance on the Halstead-Reitan Neuropsychological Test Battery (HRB; Reitan & Wolfson, 1993). In the current study, which included a large sample (N = 369) of patients referred for neuropsychological (NP) evaluation after presumptive head injury, MMPI-2 measures of psychological disturbance accounted for as much as 25% of the variance in HRB test scores, resulting in a moderate overall effect size (median Adj. R(2) = .16; R = .40). When demographic variables, head injury severity, and compensation-seeking status were entered in previous steps, incomplete effort as defined by chance performance on the RMT accounted for between 2% and 13% of the variance in HRB test scores, with modest overall effect size (median R(2) Delta = .07; R = .26) in multiple regression equations. Additionally, when MMPI-2 indices of psychological disturbance were included in the last step, they accounted for 2% to 11% of additional variance, retaining a modest overall effect (median R(2) Delta = .03; R = .17). Compensation-seeking status and injury severity as measured by duration of post-traumatic amnesia were, at best, modestly related to NP test performance. Findings confirm the reliable relationship between test performance and psychological disturbance as well as incomplete effort when assessing dysfunction following head injury. In contrast to previous studies, incomplete effort was unrelated to compensation-seeking status.

Procedure-based nonsurgical management of lumbar zygapophyseal joint cyst-induced radicular pain.

OBJECTIVE: To evaluate the success of fluoroscopically guided, contrast-enhanced lumbar zygapophyseal joint (Z-joint) aspiration and steroid injection combined with transforaminal epidural steroid injections (TFESIs) for the treatment of lumbar Z-joint cyst-induced radicular pain. DESIGN: Retrospective case series with independent follow-up. SETTING: Institutional, referral center. PARTICIPANTS: Twenty-three patients referred to a single provider for procedure-based management of radicular pain believed secondary to lumbar Z-joint cyst. Inclusion criteria consisted of lumbar radicular pain that was consistent with the level and side of the Z-joint cyst as a causative lesion. INTERVENTIONS: Eighteen patients were treated with a fluoroscopically guided, contrast-enhanced Z-joint aspiration and steroid injection at the level of the causative cyst coupled with a fluoroscopically guided, contrast-enhanced TFESI over the level of the presumably irritated spinal nerve. MAIN OUTCOME MEASURES: Patient satisfaction, and whether or not surgery was performed. RESULTS: Fifty percent of patients treated with the procedure had significant long-term benefit and avoided surgical intervention at an average follow-up of 9.9 months. CONCLUSIONS: Fluoroscopically guided, contrast-enhanced spinal procedures as part of an aggressive nonsurgical treatment program are a safe and effective alternative to surgical intervention for lumbar Z-joint cyst-induced radicular pain.

A personological examination of self- and other-forgiveness in the five factor model.

In a sample composed of 147 undergraduates (age range 18 to 55 years; M = 22), we conducted an examination of the convergent and discriminant validity of self- and other-forgiveness in the Five-factor model of personality (FFM). Using multiple measures of each construct, principal components analysis (PCA) supported a 2-component model of forgiveness. Findings for the PCA and external correlates with the FFM provided evidence for a largely orthogonal relationship between self- and other-forgiveness. Specifically, self-forgiveness was negatively related to Neuroticism and unrelated to Agreeableness, whereas other-forgiveness was unrelated to Neuroticism and positively related to Agreeableness. Overlap between the constructs was found in which both self- and other-forgiveness were negatively related to the hostility facet of Neuroticism and the order facet from Conscientiousness and positively related to the warmth and positive emotions facet scales from the Extraversion domain of the Revised NEO Personality Inventory (Costa & McCrae, 1992). Overall, these findings suggest that self- and other-forgiveness, although seemingly similar, carry very different motivational underpinnings.

MMPI-2 indices of psychological disturbance and attention and memory test performance in head injury.

A number of studies have investigated the relationship between psychological disturbance and neuropsychological (NP) test performance. The current study is a replication and extension of who found that MMPI-2 indices of psychological disturbance are related to performance on NP tests of attention and memory in psychiatric and head-injured patients. In a large sample (N=381) referred for evaluation after sustaining presumed head injury, we examined the relationship between MMPI-2 indices of psychological disturbance and measures of attention and memory from the Wechsler Memory Scale-Revised (WMS-R), Wechsler Adult Intelligence Scale-Revised (WAIS-R), California Verbal Learning Test (CVLT), and the Memory Assessment Scales (MAS). Although related to other domains, MMPI-2 variables were most consistently related to measures of attention and List Learning. Even when demographic variables, injury severity, and litigation status were controlled, MMPI-2 indices significantly predicted performance on six out of eight tests. However, the correspondence between similar indices on the WMS-R and MAS were relatively low, especially for Verbal Memory and Visual Reproduction. Further, litigation was significant in predicting only 2 of 8 attention and memory indices.

Competition and cooperation in the five-factor model: individual differences in achievement orientation.

The authors investigated the relationship between basic achievement orientations of competition and cooperation and the five-factor model of personality as measured by the Revised NEO Personality Inventory (NEO-PI-R; P. T. Costa & R. R. McCrae, 1992). They examined 2 types of competition: hypercompetition (R. M. Ryckman, B. Thornton, & J. C. Butler, 1994) and personal development competition (R. M. Ryckman, M. Hammer, L. M. Kaczor, & J. A. Gold, 1996), as conceptualized by K. Horney (1937). In a sample of 251 young adults, 14% to 38% of the variance in achievement orientations was collectively predicted by NEO-PI-R domain scales. Of NEO-PI-R predictors, Agreeableness was most important in characterizing differences between various achievement orientations; Agreeableness was negatively related to hypercompetition, positively related to cooperation, and unrelated to personal development competition. Extraversion was positively related to both cooperation and personal development competition but was unrelated to hypercompetition. In contrast, Openness and Conscientiousness were least helpful in differentiating among achievement orientations. These findings support the useful application of the NEO-PI-R in achievement research and highlight competition and cooperation as interpersonally laden achievement orientations.

Positive and negative symptoms of schizotypy and the Five-factor model: a domain and facet level analysis.

In this study, we investigated the Five-factor model in the concurrent prediction of positive symptom schizotypy as measured by the Magical Ideation (Eckblad & Chapman, 1983) and Perceptual Aberration (Chapman, Chapman, & Raulin, 1978) scales and negative symptom schizotypy as measured by the Physical Anhedonia (Chapman, Chapman, & Raulin, 1976) and Revised Social Anhedonia (Eckblad, Chapman, Chapman, & Mishlove, 1982; Mishlove & Chapman, 1985) scales. Previous studies suggest that these measures reflect the core symptoms found in schizotypal and schizoid personality disorder (Bailey, West, Widiger, & Freiman, 1993). Negative symptoms were significantly predicted by Neuroticism (+), Extraversion (-), Openness (-), and Agreeableness (-) domains of the Revised NEO Personality Inventory (NEO-PI-R; Costa & McCrae, 1992). Additionally, positive symptoms were significantly predicted by Neuroticism (+), Openness (+), and Agreeableness (-). In addition, we examined the validity of lower order traits in de- scribing these symptoms of character pathology. These findings lend further support for the use of domain and facet scales of the NEO-PI-R in the identification of personality pathology.