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Exploring the relationship between psychopathy and criminal thinking: utilising the Tri-PM within a forensic sample

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Abstract

Purpose The Triarchic Psychopathy Measure (Tri-PM) was developed in 2010 as an alternative approach to the assessment of psychopathy. The measure aims to capture psychopathic traits on a 3-factor model, which encompass the characteristics established in previous measures, as well as those evidenced within practise. Though support for the tool in academic research is growing, less is known about the scale’s utility within crime forensic settings. Thus, this study aims to explore the relationship between the Tri-PM psychopathy constructs and criminal cognition within a forensic sample. Design/methodology/approach Seventy-three adult male offenders, convicted for acquisitive or sexual crimes, from a Category B prison within the Northwest of England completed questionnaires measuring their criminal backgrounds, psychopathy traits (Tri-PM; Patrick, 2010) and criminal thinking styles (Psychology Inventory of Criminal Thinking Styles; Walters, 2001). Findings The Tri-PM measurement proved to be a successful predictor of most criminal thinking styles. Moreover, the meanness construct was the strongest predictor of proactive thinking styles, whereas the disinhibition construct was the strongest predictor of reactive thinking styles, and the boldness construct was negatively associated with reactive thinking. Comparisons among offender groups also indicated that acquisitive offenders reported higher scores of psychopathy and criminal thinking. Originality/value This study offers valuable insight into the proposed relationship between psychopathy and criminal thinking, using a recent addition to the repertoire of psychopathy measurements, the Tri-PM. This study also offers practical implications for those offering treatment within forensic settings, with significant relationships identified between the highly scoring psychopathy constructs and various criminal thinking styles.

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Two meta-analyses were performed on the Psychological Inventory of Criminal Thinking Styles (PICTS: Walters, 1995) as a predictor of recidivism. Seven samples from six different studies (5 published, 1 unpublished) were included in the first meta-analysis. The results revealed a pooled mean effect size (r) of .20 for the reconstructed General Criminal Thinking score (GCTrc), a pooled mean effect size of .17 for the reconstructed Proactive Criminal Thinking score (Prc), and a pooled mean effect size of .17 for the reconstructed Reactive Criminal Thinking score (Rrc). Data from three of these studies (4 samples) were sufficient to perform a meta-analysis of the incremental validity of the GCTrc. In all four samples, the GCTrc score predicted recidivism above and beyond the contributions of age and criminal history, with a mean effect size (odds ratio) of 1.27. Whereas the PICTS GCTrc score satisfied two of the three criteria for dynamic risk (i.e., dynamic risk factors are statistically and clinically significant predictors of outcome and are incrementally valid relative to well-established static risk factors), there is a need for additional data to assess its standing on the third criterion (i.e., changes in dynamic risk factors predict outcome and changes in outcome risk).
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The predictive validity of the Psychological Inventory of Criminal Thinking Styles (PICTS) was explored in a group of 536 medium-security prison inmates. Scores on six of the eight PICTS clinical scales were observed to correlate with future disciplinary problems in this sample of subjects. Although age was a more potent predict or of disciplinary status, several of the PICS scales displayed predictive efficacy independent of that attained with the age variable. The implications of these results are discussed with respect to continued development of the PICTS instrument.
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The present study explored whether a risk/needs perspective could assist in understanding the construct of criminal psychopathy as assessed by the Psychopathy Checklist-Revised (PCL-R). Three hundred and twenty-one inmates serving sentences for violent offenses were assessed on the PCL-R and administered a variety of psychometric measures relevant to criminal conduct. Using a traditional PCL-R cutoff, 36 participants (11.2%) were designated as psychopaths and 285 (88.8%) were designated as nonpsychopaths and compared on various criminal conduct and psychometric variables. Results showed that psychopaths had significantly greater risk/needs areas than nonpsychopaths, and this pattern remained when alternative diagnostic cutoffs were used. Implications of the findings with respect to theory and practice are considered.
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This article describes the evolution, standardization, and preliminary validation of the Psychological Inventory of Criminal Thinking Styles (PICTS), an instrument designed to measure thinking styles believed to be associated with serious patterns of criminal conduct. Responses obtained from 450 federal prison inmates were used to establish norms for the PICTS, assess the reliability of the various PICTS scales, and investigate preliminary validity issues. The results indicate that maximum-security subjects attained significantly higher scores on the PICTS thinking scales than minimum- and medium-security subjects and that the PICTS possesses sufficient reliability and initial validity to warrant continued investigation.
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The Psychological Inventory of Criminal Thinking Styles (PICTS) was developed to assess the eight thinking styles presumed to play a leading role in maintaining criminal patterns of interaction. In order to identify response styles and sets capable of altering a person's responses on the thinking style portion of the PICTS, two validity scales-one to measure confusion (Cf) and the other defensiveness (Df)-were constructed and incorporated into the PICTS. However, research has shown that the internal consistency, test-retest reliability, and preliminary validity of these two scales are well below the levels attained by the eight thinking style scales. The two validity scales have therefore been revised by omitting several items from each scale and replacing them with items from the thinking style item pool. These revised scales demonstrate improved internal consistency, test-retest stability, and criterion validity on par with results recorded previously with the eight thinking style scales.
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The relationship between psychopathy and thinking styles that support and maintain a criminal lifestyle is examined using the Psychopathy Checklist: Screening Version (PCL:SV; Hart, Cox, & Hare, 1995) and the Psychological Inventory of Criminal Thinking Styles (PICTS; Walters, 1995). These measures are administered to a sample of 75 patients recruited from a state psychiatric hospital in the northeastern United States. Correlational analyses indicate that the PICTS General Criminal Thinking, Self-Assertion/Deception factor scale, and several criminal thinking style scales are significantly related to psychopathy. The significantly associated criminal thinking scales include Entitlement (r = .44) and Superoptimism (r = .43) with Factors 1 and 2 of the PCL:SV, respectively. Multiple regression analyses reveal that these two criminal thinking scales are the strongest predictors of Factors 1 and 2 of the PCL:SV, respectively. Implications for the cognitive basis of the construct of psychopathy, as well as potential treatment interventions, are discussed.
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Research on psychopathology has been hindered by persisting difficulties and controversies regarding its assessment. The primary goals of this set of studies were to (a) develop, and initiate the construct validation of, a self-report measure that assesses the major personality traits of psychopathy in noncriminal populations and (b) clarify the nature of these traits via an exploratory approach to test construction. This measure, the Psychopathic Personality Inventory (PPI), was developed by writing items to assess a large number of personality domains relevant to psychopathy and performing successive item-level factor analyses and revisions on three undergraduate samples. The PPI total score and its eight subscales were found to possess satisfactory internal consistency and test-retest reliability. In four studies with undergraduates, the PPI and its subscales exhibited a promising pattern of convergent and discriminant validity with self-report, psychiatric interview, observer rating, and family history data. In addition, the PPI total score demonstrated incremental validity relative to several commonly used self-report psychopathy-related measures. Future construct validation studies, unresolved conceptual issues regarding the assessment of psychopathy, and potential research uses of the PPI are outlined.
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The predictive utility of Hare, Hart, and Cox's Psychopathy Checklist Screening Version (PCL:SV) was assessed utilizing a sample of forensic psychiatric patients from Vernon State Hospital in Vernon, Texas. A sample of 55 patients were interviewed and rated on the PCL:SV. During a six month follow up, occurrences of self-harm (suicide attempts and self mutilation), aggression (verbal abuse and threats, irritability, belligerence, and fighting) escape potential (threats and attempts), and treatment refusal (medication, tests, and physician's appointments) were rated. Separate stepwise multiple regression analyses were performed utilizing patient's age, type of charges, documented history of alcohol/drug abuse and the PCL:SV as predictor variables. Results indicate that the PCL:SV is predictive of aggression and treatment noncompliance.