Thomas F. Oltmanns

Emotional Experience and Expression in Schizophrenia and Depression

The emotional responses of schizophrenic, depressed, and normal subjects and whether differences in the emotional responding of these groups depended on how emotional responses were elicited or measured were examined. Twenty-three blunted and 20 nonblunted schizophrenics, 17 unipolar depressed subjects, and 20 normal subjects were exposed to a series of affect-eliciting stimuli. The stimuli varied in valence (positive vs. negative) and in level of cognitive demand. Subjects reported their subjective experiences, and their facial expressions were videotaped. Blunted schizophrenics were the least facially expressive, although their reported subjective experiences did not differ from those of the other groups. The nonblunted schizophrenics were more responsive than the depressed subjects to the positive stimuli, although the two groups did not differ in their clinical ratings of affective flatness.

Perceptions of people with personality disorders based on thin slices of behavior

Strangers made reliable judgments about personality traits after viewing one 30-s excerpt from interviews with anonymous target persons. Ratings were generated for 229 military recruits participating in a study of personality disorders. Approximately 28% of the recruits met DSM-IV criteria for a definite or probable personality disorder (PD). Several untrained undergraduate students rated each video clip with regard to the Big Five personality traits, physical attractiveness, and likeability. The students accurately rated people who exhibited features of paranoid, schizotypal, dependent, and avoidant PDs as being lower in extraversion. The raters also considered these people less likeable. Students accurately rated people who exhibited features of histrionic PD as being higher in extraversion and found them to be more likeable. Laypersons can make accurate judgments regarding some personality characteristics associated with personality disorders, even on the basis of minimal information. These perceptions may influence ways in which people respond to others with PDs.

Self- and Peer Perspectives on Pathological Personality Traits and Interpersonal Problems

This study compares the relationship between personality disorders and interpersonal problems as obtained by self-report and peer-report measures. Participants (N = 393) were administered self- and peer-report versions of the Peer Inventory for Personality Disorder and the Inventory of Interpersonal Problems-64. Canonical analyses demonstrated similar relationships between personality disorder features and interpersonal problems as measured by either self or peer. Analyses between self and peer found little shared variance across sources, indicating a large method variance. Results indicate that although similar constructs are identified by self and peers in their understanding of personality pathology and associated interpersonal problems, self-report information overlaps very little with information obtained from peers, underscoring the importance of obtaining multiple sources of information.

Mental health needs of the chronically mentally ill elderly.

The treatment histories and current social, financial, and clinical status of 111 chronically mentally ill (CMI) persons over the age of 60 were examined. Information was obtained from Ss, family, mental health records, and mental health professionals familiar with Ss. Psychiatric symptoms were observed in 74% of Ss. Many Ss experienced long periods without acute episodes of illness. Recurring episodes eventually appeared in most Ss, however, and ongoing deficits in daily functioning and social contacts were prototypical. Two thirds of the Ss were living in the community, relying heavily on family contacts; the rest lived primarily in nursing homes (23.4%) or psychiatric hospitals (7.2%). Social support was the best predictor of level of functioning. Findings suggest that failure of CMI elderly to use mental health services is not due to lack of need. Mental health services currently do not appear to be meeting the needs of this population.

Factorial structure of pathological personality as evaluated by peers.

This study explored how individuals apply features of personality disorders (PDs) to peers. Members of groups nominated peers who exhibited symptoms for each of the 10 PDs in the DSM-IV. Data were gathered in 2 samples: 1st-year college students (n = 1,440) and Air Force recruits (n = 2,075). The peer method reliably identified group members exhibiting specific PD features. Factor analyses identified a clearly interpretable structure relevant to the pathological personality constructs being assessed. The structure replicated well across samples and showed expected relationships to broader models of normal personality. However, cross-method correlations of factor scores were only moderate, suggesting that peer reports are reliably different from self-reports regarding the presence of pathological personality traits.

Psychometric Analysis of Racial Differences on the Maudsley Obsessional Compulsive Inventory

Black university students scored significantly higher than White students on the Maudsley Obsessional Compulsive Inventory (MOCI). They tended to endorse more Cleaning and Checking subscale items in the pathological direction. Subsequent analyses examined whether this finding is a reflection of valid group differences in the prevalence of OCD or a psychometric artifact. Structured interviews were conducted to determine the correspondence of MOCI scores with OCD diagnoses. The race difference in endorsement frequency on the MOCI did not extend to OCD diagnoses. The MOCI scores showed modest predictive validity in Whites, but they did not predict interview-based diagnoses in Blacks. Multivariate item response theory was then employed to examine race differences in the Cleaning and Checking subscales. Equivalent item discrimination parameters fit the data for Black and White participants for both subscales. A more restrictive model in which relative item difficulties were also constrained to be equal for Black and White participants did not fit. This interaction between race and item difficulty suggests that the items do not have equivalent psychometric properties in Blacks and Whites.

Personality and the derogation of others: Descriptions based on self- and peer report

Abstract We examined the tendency to react to failure by derogating others. A situation was constructed to test this reaction among those posited to exhibit this behavior most often—narcissistically inclined individuals. The participants (N=64) consisted of college students screened for pathological personality traits using self-report and peer report measures. Participants completed a two-part lab task and received false feedback indicating that they had been outperformed by fellow participants. Among self-report items, the best predictor of other-derogation was narcissism; among peer-report items, the best predictor items described cold, aloof, and avoidant personality tendencies. Findings are discussed with regard to identifying personality trait–situation–behavior patterns through multiple assessment methods.

The Schedule for Nonadaptive and Adaptive Personality (SNAP) Temporal Stability and Predictive Validity of the Diagnostic Scales

The authors investigated the test-retest reliability and predictive validity of the diagnostic scales from the Schedule for Nonadaptive and Adaptive Personality (SNAP). Participants were identified from a sample of 240 undergraduates who completed the SNAP and the Social Adjustment Scale (SAS-SR) at Time 1. The authors selected 50 people who met criteria for a personality disorder (PD) based on the SNAP and 50 who did not qualify for a diagnosis. Eighty-three of these people completed the SNAP and the SAS-SR for a second time approximately 9 months after initial screening. SNAP PD scales were relatively stable over time. Test-retest correlation coefficients ranged from .58 to .81. Scores on diagnostic scales for paranoid, schizoid, and schizotypal PD were inversely related to self-reported levels of adjustment for social roles concerned with work as a student, leisure activities, and relation-ships with family. The results provide some evidence for the validity of the SNAP.

The relation between obsessive-compulsive personality traits and subtypes of compulsive behavior

Abstract The nature of the relationship between obsessive-compulsive personality disorder (OCPD) and obsessive-compulsive disorder (OCD) has been the subject of considerable debate. The current study examined the hypothesis of a differential association of compulsive checking and washing behaviours with obsessive-compulsive personality traits within a nonclincal sample utilizing the Checking and Washing subscales of the Maudsley Obsessive-Compulsive Inventory (MOCI). Since checking behavior and obsessive-compulsive personality traits share a common future orientation, it was expected that checking behaviour would be more strongly related to OCPD traits than washing behavior. As hypothesized, checkers scored significantly higher than washers on several measures of obsessive-compulsive personality traits. In addition, the MOCI Checking subscale was more strongly associated with obsessive-compulsive personality measures than was the MOCI Washing subscale. The implications of these results in terms of etiology and treatment of OCD are discussed.

Attentional coping style in obsessive-compulsive personality disorder: a test of the intolerance of uncertainty hypothesis

Abstract We tested the hypothesis that individuals with elevated levels of obsessive-compulsive personality traits exhibit a compromised ability to tolerate uncertainty. This hypothesis was tested by examining attentional coping style in the face of an ego-threatening event. The Personality Diagnostic Questionnaire-4 (PDQ-4) was administered to a pool of undergraduate students in order to recruit an obsessive-compulsive personality (OC) group ( n =60), a normal control (NC) group ( n =60), and an avoidant personality (AV) group ( n =40). Both self-report and observational measures of information-seeking/avoidance were obtained during a laboratory procedure in which participants completed a cognitive ability test. As predicted, the OCPD group (1) spent more time listening to information about the test prior to taking the test, (2) spent less time listening to music prior to taking the test, (3) tended to indicate that they wanted to know their test score more often, and (4) reported significantly higher levels of dispositional monitoring, relative to the two control groups. In addition, self-reported degree of dispositional monitoring was positively correlated with severity of OCP symptoms but not with AVP symptoms. Results provided partial support for the hypotheses of an elevated degree of information-seeking behavior in OCPD.