Psychopathic, not psychopath: Taxometric evidence for the dimensional structure of psychopathy.

Although psychopathy is frequently regarded as qualitatively distinct from other conditions, relatively little research has examined whether psychopaths represent a distinct class of individuals. Using a sample of 876 prison inmates and court-ordered substance abuse patients who were administered the Psychopathy Checklist-Revised (R. D. Hare, 2003), the authors examined the latent structure of psychopathy using several taxometric procedures developed by Meehl and colleagues (P. E. Meehl & L. J. Yonce, 1994; N. G. Waller & P. E. Meehl, 1998). The results across these procedures offer no compelling support for the contention that psychopathy is a taxonic construct and contradict previous reports that psychopathy is underpinned by a latent taxon. The authors discuss the theoretical, public policy, and practice-level implications of these findings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Taxometric and factor analytic models of anxiety sensitivity: Integrating approaches to latent structural research.

This study represents an effort to better understand the latent structure of anxiety sensitivity (AS), as indexed by the 16-item Anxiety Sensitivity Index (ASI; S. Reiss, R. A. Peterson, M. Gursky, & R. J. McNally, 1986), by using taxometric and factor-analytic approaches in an integrative manner. Taxometric analyses indicated that AS has a taxonic latent class structure (i.e., a dichotomous latent class structure) in a large sample of North American adults (N = 2,515). As predicted, confirmatory factor analyses indicated that a multidimensional 3-factor model of AS provided a good fit for the AS complement class (normative or low-risk form) but not the AS taxon class (high-risk form). Exploratory factor analytic results suggested that the AS taxon may demonstrate a unique, unidimensional factor solution, though there are alternative indications that it may be characterized by a 2-factor solution. Findings suggest that the latent structural nature of AS can be conceptualized as a taxonic latent class structure composed of 2 types or forms of AS, each of these forms characterized by its own unique latent continuity and dimensional structure. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Paranoid personality has a dimensional latent structure: Taxometric analyses of community and clinical samples.

Although paranoid personality is one of the most commonly diagnosed personality disorders and is associated with numerous negative life consequences, relatively little is known about the structural properties of this condition. This study examines whether paranoid personality traits represent a latent dimension or a discrete class (i.e., taxon). In Study 1, the authors conducted taxometric analyses of paranoid personality disorder criteria in a sample of 731 patients participating in the Collaborative Longitudinal Study of Personality Disorders project (Gunderson et al., 2000) who had been administered a semistructured diagnostic interview for personality disorders according to criteria of the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994). In Study 2, the authors conducted parallel analyses of the Paranoia scale of the Personality Assessment Inventory (PAI; L. C. Morey, 2007), using data from the PAI community and clinical normative databases. Analyses across both self-report and interview-based indicators offered compelling support for a dimensional structure. Additionally, analyses of external correlates in these data sets suggested that dimensional models demonstrated stronger validity coefficients with criterion measures than did dichotomous models. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The latent structure of social anxiety disorder: Consequences of shifting to a dimensional diagnosis.

Despite longstanding debate over the nature of the boundary between social anxiety disorder (SAD) and less severe social anxiety, no study has tested directly whether the defining features of the disorder correspond to a latent category or dimension. The present study examined this question using data from the National Comorbidity Survey Replication (NCS-R), a nationally representative survey of the U.S. household population. Indicators representing the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM–IV; American Psychiatric Association, 1994) criteria for SAD were submitted to taxometric analyses in a subsample of adults (n = 2,166) who reported excessive social fear in their lifetime. Multiple taxometric procedures and consistency tests converged on a dimensional solution, suggesting that SAD is continuous with milder social anxiety. In follow-up analyses, a dimensional SAD diagnosis outperformed the DSM–IV diagnosis in predicting the subsequent onset of a range of clinically important outcomes. Large differences in associations with comorbid mood disorders, suicidality, and treatment seeking in particular favored the prognostic value of dimensional over categorical diagnosis. These findings support the validity and potential utility of a dimensional conceptualization of SAD that may inform efforts to revise the diagnosis for DSM–V. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

To sum or not to sum: Taxometric analysis with ordered categorical assessment items.

Meehl's taxometric method has been shown to differentiate between categorical and dimensional data, but there are many ways to implement taxometric procedures. When analyzing the ordered categorical data typically provided by assessment instruments, summing items to form input indicators has been a popular practice for more than 20 years. A Monte Carlo study compared the accuracy of taxometric analyses implemented in the traditional way (without summing items) and taxometric analyses implemented with the summed-input method. These analyses generated no support for the summed-input method, which substantially reduced discriminating power for 2 of the 3 procedures studied. Accuracy was highest when 5 or more indicators and 4 or more ordered categories were used. Findings from the simulation study were then used to help interpret the results for taxometric analyses of antisocial personality disorder criteria with real research data. In this example, the traditional method yielded clearer results than the summed-input method. Implications for the use and further study of the taxometric method in assessment research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Taxometric Investigation of Unipolar Depression in the National Comorbidity Survey.

Ongoing debate has questioned whether unipolar depression is a dimensional or categorical phenomenon. Although past studies using taxometric methods have supported a dimensional interpretation, each has suffered from methodological limitations. The present study was designed to overcome these limitations through reanalysis of the National Comorbidity Survey. Two indicator sets were constructed from the depression-relevant questions of the Composite International Diagnostic Interview. Participants who endorsed the lifetime occurrence of significant depressed mood or anhedonia (n = 4,577) were submitted to 2 nonredundant taxometric procedures (maximum eigenvalue and means above minus below a cut), additional consistency tests, and recently developed simulation techniques. All results converged on a dimensional solution. The implications of these findings on assessment, treatment, and research design are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On the hierarchical structure of mood and anxiety disorders: Confirmatory evidence and elaboration of a model of temperament markers.

The authors examined D. Watson's (2005) proposed reconceptualization of the diagnostic categories for mood and anxiety disorders for the Diagnostic and Statistical Manual of Mental Disorders--Fifth Edition (DSM-V) and tested an elaboration of the 2-factor (positive and negative activation) model of underlying temperament markers that incorporates A. Tellegen, D. Watson, & L. A. Clark's (1999a, 1999b) higher-order dimension of happiness-unhappiness (or demoralization; see A. Tellegen et al., 2003). In Study 1, 502 undergraduate students completed several symptom measures of mood and anxiety disorders and the Minnesota Multiphasic Personality Inventory-2 (J. N. Butcher et al., 2001). Using confirmatory factor analysis, the authors replicated Watson's distress and fear disorder model. Path analyses showed that demoralization was a primary marker of distress disorders, whereas dysfunctional negative emotions was a primary marker of fear disorders. Low positive emotions was a specific marker of depression and social phobia. This 3-factor path model was associated with better fit than was a 2-factor model excluding demoralization. In Study 2, the authors replicated the findings of Study 1 using data from an archival clinical sample of 636 Veterans Affairs hospital outpatients. The authors' findings provide evidence on the important role of demoralization in mood and anxiety disorders. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

DSM-IV criteria for generalized anxiety disorder in older adults: Distinguishing the worried from the well.

This study compared 36 older adults with generalized anxiety disorder (GAD), 22 older adults with subsyndromal anxiety symptoms, and 32 normal controls on criteria of the Diagnostic and Statistical Manual of Mental Disorders (4th ed.) for GAD. GAD patients reported more frequent and uncontrollable worry, somewhat different worry content, higher prevalence of most associated symptoms, and more distress or impairment than the subsyndromal group or normal controls. Individuals with subsyndromal anxiety reported more excessive, frequent, and uncontrollable worry than asymptomatic individuals, along with more sleep disturbance, fatigue, and distress or impairment. Results indicate that the key features of late-life GAD are distress and impairment, frequency and uncontrollability of worry, muscle tension, and sleep disturbance and that clinicians treating older adults with GAD should monitor and treat residual symptoms. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predictors and pathways from infancy to symptoms of anxiety and depression in early adolescence.

Data from a prospective 11-year longitudinal survey were used to identify early predictors and pathways to symptoms of anxiety and depression at 12–13 years of age, and to examine whether there were unique predictors of anxious versus depressive symptoms. Structural equation modeling was used to explore longitudinal relations between contextual (maternal distress, family adversities, and social support) and temperamental (shyness and emotionality) risk factors in their prediction of informant-consistent symptoms of anxiety and depression. The results show that early risk factors can explain 38% of the variance in boys’ covarying symptoms of anxiety and depression in early adolescence, and 25% of variance in girls’ covarying symptoms. Two main pathways were identified. One pathway was through temperament, as nearly all risk factors were partly mediated through child emotionality in midchildhood. Another pathway was through early contextual risk factors, with all direct and indirect contextual impact from before 5 years of age. Family adversity uniquely predicted depressive symptoms. These findings underscore the persisting impact of contextual predictors in families with children less than 5 years of age. The importance of early interventions to prevent adolescent internalizing problems is stressed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A taxometric analysis of the latent structure of psychopathy: Evidence for dimensionality.

The taxonomic status of psychopathy is controversial. Whereas some studies have found evidence that psychopathy, at least its antisocial component, is distributed as a taxon, others have found that both major components of psychopathy-callousness/unemotionality and impulsivity/antisocial behavior-appear to distribute as dimensions and show little evidence of taxonicity. In the present study, recent advances in taxometric analysis were added to P. Meehl's (1995) multiple consistency tests strategy for assessing taxonicity, and they were applied to Psychopathy Checklist-Revised (R. D. Hare, 2003) ratings of 4,865 offenders sampled from multiple forensic settings. The results indicated that both the individual components of psychopathy and their interface are distributed dimensionally. Both the implications of these results for research in psychopathy and the integration of these findings with previous taxometric studies of psychopathy are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Memory bias for threatening information in anxiety and anxiety disorders: A meta-analytic review.

Although some theories suggest that anxious individuals selectively remember threatening stimuli, findings remain contradictory despite a considerable amount of research. A quantitative integration of 165 studies with 9,046 participants (clinical and nonclinical samples) examined whether a memory bias exists and which moderator variables influence its magnitude. Implicit memory bias was investigated in lexical decision/stimulus identification and word-stem completion paradigms; explicit memory bias was investigated in recognition and recall paradigms. Overall, effect sizes showed no significant impact of anxiety on implicit memory and recognition. Analyses indicated a memory bias for recall, whose magnitude depended on experimental study procedures like the encoding procedure or retention interval. Anxiety influenced recollection of previous experiences; anxious individuals favored threat-related information. Across all paradigms, clinical status was not significantly linked to effect sizes, indicating no qualitative difference in information processing between anxiety patients and high-anxious persons. The large discrepancy between study effects in recall and recognition indicates that future research is needed to identify moderator variables for avoidant and preferred remembering. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perfectionism, negative social feedback, and interpersonal rumination in depression and social anxiety.

The current study investigated the associations among trait perfectionism, perfectionistic self-presentation, negative social feedback, interpersonal rumination, depressive symptoms, and social anxiety. New measures of negative social feedback and interpersonal rumination were used to evaluate their relevance to the social aspects of perfectionism and their roles in distress. A sample of 155 undergraduate students completed the Multidimensional Perfectionism Scale, the Perfectionistic Self-Presentation Scale, the Social Feedback Questionnaire, Rumination About an Interpersonal Offense, and measures of depressive symptoms and social anxiety. The results confirmed that socially prescribed perfectionism and perfectionistic self-presentation were associated significantly with negative social feedback and rumination following interpersonal events (i.e., being hurt, humiliated, mistreated). Also, depressive symptoms and social anxiety were associated significantly with negative social feedback, interpersonal rumination, trait perfectionism, and perfectionistic self-presentation. Additional analyses indicated that negative social feedback and interpersonal rumination mediated the links between components of the perfectionism construct and distress. Overall, our findings suggest that self-reported receipt of frequent negative feedback from others and engaging in rumination about an interpersonal event play important roles in the distress experienced by certain individuals with high levels of perfectionism. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Relations between anxiety sensitivity, distress tolerance, and fear reactivity to bodily sensations to coping and conformity marijuana use motives among young adult marijuana users.

The present investigation examines anxiety sensitivity, distress tolerance, and fear reactivity to bodily sensations in relation to Coping and Conformity marijuana use motives among a sample of young adult marijuana users (n = 135; 46.7% women; Mage = 20.45, SD = 5.0). After controlling for current marijuana use frequency (past 30 days), daily cigarette smoking rate, average volume of alcohol used over the past year, negative affectivity, and other marijuana use motives, anxiety sensitivity was significantly and uniquely associated with Coping and Conformity motives for marijuana use. Distress tolerance evidenced significant and unique incremental relations to Coping motives, whereas fear reactivity to bodily sensations was unrelated to any marijuana use motive. These results provide novel information related to the role of emotional sensitivity and tolerance factors as they pertain to specific types of motives for marijuana use among young adults. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Test anxiety and Rorschach performance.

"This study was designed to test the validity of certain Rorschach anxiety indices which have been shown to reflect the effects of exposure to a stressful situation, and to examine the generality of certain hypotheses derived from a theoretical framework… . The results provide encouraging evidence as to the validity of certain anxiety indicators and support the theoretical assumptions from which most of them were derived." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Latent variable analysis of coping, anxiety/depression, and somatic symptoms in adolescents with chronic pain.

Reports of adolescents' coping with recurrent pain, symptoms of anxiety/depression, and somatic complaints were obtained from a sample of 164 adolescents with recurrent abdominal pain and their parents. Confirmatory factor analysis revealed that coping consisted of 3 nonorthogonal factors: Primary Control Engagement Coping (problem solving, emotional expression, and emotional regulation), Secondary Control Engagement Coping (positive thinking, cognitive restructuring, acceptance, and distraction), and Disengagement Coping (denial, avoidance, and wishful thinking). Structural equation modeling using latent variables revealed that secondary control engagement coping predicted lower levels of anxiety/depression symptoms and somatic complaints, and disengagement coping was related to higher levels of anxiety/depression and somatic complaints. Implications for understanding child and adolescent coping with pain are highlighted. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Some conditions of anxiety extinction.

Four procedures for extinguishing anxiety were tested with rats as Ss. The results support the following conclusions: 1. Remaining away from an anxiety-eliciting situation for a short period of time does not bring about extinction of anxiety; 2. The Pavlovian extinction operation does weaken the strength of conditioned anxiety; 3. The anxiety extinction process is accelerated by the pairing, during the extinction operation, of the anxiety-producing stimulus with a positive reinforcer (a cage mate stimulus animal); and tentatively, 4. An additional emotionalizing operation (blocking of escape) that is concurrent with the extinction operation will impede the extinction process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dimensional and componential structure of a hierarchical organization of pain-related anxiety constructs.

Research has identified several anxiety and fear constructs that contribute directly or indirectly to the chronic course of pain. One way to gain insight into the frequently observed interrelations between these constructs may be by conceptualizing them within a hierarchical structure. In this structure, general and specific constructs are proposed at different levels of a hierarchical tree. The present study sought to find evidence for this idea by exploring the dimensional and componential structure of a hierarchical representation of pain-related anxiety constructs. Small cards describing the individual items of 9 pain-related anxiety measures were presented to undergraduate students (N = 294), who were asked to sort them into piles of what they perceived as items of similar meaning. Cluster analysis (additive tree analyses) revealed cluster groups that could be interpreted along the lines of the proposed hierarchical structure. Multidimensional scaling analysis showed that the similarity data are characterized by a dimension that runs from general affective to pain-specific concerns. This study thus offers empirical support for the postulation of a general and specific hierarchical ordering of these constructs. Furthermore, its results endorse the independent use of various pain-related anxiety measures in research and practice aiming to assess negative emotional constructs that contribute to pain. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Meta-analysis of the relations of anxiety sensitivity to the depressive and anxiety disorders.

There is a substantial literature relating the personality trait anxiety sensitivity (AS; tendency to fear anxiety-related sensations) and its lower order dimensions to the mood and anxiety (i.e., internalizing) disorders. However, particularly given the disorders’ high comorbidity rates, it remains unclear whether AS is broadly related to these disorders or if it shows a pattern of differential relations. Meta-analyses of the concurrent relations of AS with the internalizing disorders were conducted based on 117 studies and 792 effect sizes. Mean Anxiety Sensitivity Index scores by diagnostic group and AS–symptom correlations both indicated that AS is most strongly related to panic, generalized anxiety disorder (GAD), and posttraumatic stress disorder (PTSD). More specific analyses were also conducted on (a) AS correlations with symptom dimensions within individual disorders and (b) correlations between lower order AS components and symptoms. The meta-analytic correlation matrix for higher order AS–disorder relations was submitted to path analysis, modeling latent Distress disorders and Fear disorders that control for much of the shared variance among the disorders. Results of the path analysis indicated that AS is broadly related to these disorders but that agoraphobia, GAD, panic, and PTSD have the strongest associations. In addition, AS was more strongly related to the latent distress disorders than the fear disorders. Because of the contemporaneous assessment of AS and internalizing disorders in these studies, the results should not be taken to mean that AS has a stronger casual association with certain disorders. Implications for concurrent AS–internalizing relations, interpretations of the AS construct, and structural models of personality and psychopathology are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The latent structure of attention-deficit/hyperactivity disorder in a clinic-referred sample.

The question of whether attention-deficit/hyperactivity disorder (ADHD) represents a continuum of attentional and executive dysfunction or a natural category has yet to be extensively investigated. Subjective report and neuropsychological data from 437 individuals referred for neuropsychological evaluation were analyzed using latent class and taxometric analyses (mean above minus below a cut [MAMBAC], maximum eigenvalue [MAXEIG], and latent mode [LMODE]). Results indicated no significant evidence for a taxonic representation of ADHD across multiple procedures and indicator sets. Similarly, there was no evidence that ADHD subtypes represent a qualitative distinction. These findings may suggest that current diagnostic conceptualizations are inadequate for accurately identifying and characterizing individuals with problems related to attention and executive dysfunction. Alternatively, the null findings may have resulted from inadequate indicator selection. A dimensional model may better facilitate accurate identification of individuals at risk for functional impairment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Using Taxometric Analysis to Distinguish a Small Latent Taxon From a Latent Dimension With Positively Skewed Indicators: The Case of Involuntary Defeat Syndrome.

Joining the debate on the structure of depression, S. R. H. Bearh and N. Amir (2003) analyzed college students' responses to 6 Beck Depression Inventory (BDI) items with predominantly somatic content and concluded that they identified a small latent taxon corresponding to involuntary defeat syndrome. An exact replication of these analyses yielded virtually identical taxometric results, but parallel analyses of simulated taxonic and dimensional comparison data matching the intercorrelations and skewed distributions of the BDI items showed the results to be more consistent with dimensional than with taxonic latent structure. Analyses in a clinical sample with nonskewed indicators further supported a dimensional interpretation. The authors discuss methodological strategies for conducting and interpreting taxometric analyses under the adverse conditions commonly encountered in psychopathology research, including skewed indicators and small putative taxa. (PsycINFO Database Record (c) 2010 APA, all rights reserved)