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PubMed2003

Applicability of traditional and revised models of psychopathy to the Psychopathy Checklist: screening version.

Recently, psychopathy has become virtually synonymous with the Psychopathy Checklist (PCL) measures. However, the "gold standard" 2-factor model that underlines these measures has been questioned for its uncertain empirical support and emphasis on antisocial behavior that is not specific to psychopathic personality deviation. This study (N = 870 civil psychiatric patients) compares the fit of the traditional 2-factor model with that of a revised 3-factor model of psychopathy. The revised model better describes the structure of the Screening Version of the PCL (PCL:SV) than the traditional model. Although the revised model's exclusion of some items that assess antisocial behavior reduces the PCL:SV's power in predicting patient violence, this model arguably assesses psychopathy in a more specific, theoretically coherent fashion that may reduce misapplications of the construct. Implications for future research are discussed.

Adult↗
PubMed2003

Is it prudent to administer all items for each Child Behavior Checklist cross-informant syndrome? Evaluating the psychometric properties of the Youth Self-Report dimensions with confirmatory factor analysis and item response theory.

Through surveying of children in 10 nations with parent, teacher, and Youth Self-Report (YSR) forms of the Child Behavior Checklist (CBCL), cross-informant syndromes (CISs) were derived and cross-validated by sample-dependent methodology. Generalizing CBCL syndromes and norms to nations excluded from its normative sample is problematic. This study used confirmatory factor analyses (CFAs) to test factor model fit for CISs on the YSR responses of 625 Jamaican children ages 11 to 18 years. Item response theory (IRT), a sample-independent methodology, was used to estimate the psychometric properties of individual items on each dimension. CFAs indicated poor to moderate model-to-data fit. Across all syndromes, IRT analyses revealed that more than 3/4 of the cross-informant items yielded little information. Eliminating such items could be cost effective in terms of administration time yet improve the measures discrimination across syndrome severity levels.

Adolescent↗
PubMed2004

Confirmatory factor analysis of the psychopathy checklist: screening version in offenders with axis I disorders.

One hundred forty-nine inpatients within a maximum security psychiatric facility were assessed with the Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995). Within the total sample, 68% had a psychotic disorder and 30% met criteria for psychopathy. Using confirmatory factor analysis, the authors tested the 2-factor PCL:SV model of psychopathy and recent 3- and 4-factor models. Results indicated good fit for each model, with the 4-factor model showing best overall fit. Structural equation modeling was used to determine which psychopathy factors predicted 6-month follow-up of inpatient aggression. The 2-, 3-, and 4-factor models, respectively, accounted for 16%.27%. and 3l% of the variance in aggression.

Adult↗
PubMed2004

A multigroup item response theory analysis of the psychopathy checklist--revised.

Item response theory was used to investigate the functioning of the Psychopathy Checklist-Revised (PCL-R; R. D. Hare, 1991, 2003) in several offender populations. With male criminal offenders (N=3,847) as a reference group, differential item functioning analyses were performed for 3 comparison groups: female criminal offenders (N=1,219), male forensic psychiatric patients (N=1,246), and male criminal offenders scored from file reviews (N=2,626). Results are discussed in the context of the 2-factor, 4-facet model for the PCL-R (R. D. Hare, 2003; J. Parker, G. Sitarenios, & R. D. Hare, 2003). Application of a multigroup graded response model to all 4 groups suggests scalar equivalence may hold at least approximately for each population, although the PCL-R provided slightly greater information about the latent trait of psychopathy for male criminal offenders scored from the standard procedure.

Adult↗
PubMed2004

Construct validity of the posttraumatic stress disorder checklist in cancer survivors: analyses based on two samples.

The measurement of posttraumatic stress disorder (PTSD) is critically important for the identification and treatment of this disorder. The PTSD Checklist (PCL; F. W. Weathers and J. Ford, 1996) is a self-report measure that is increasingly used. In this study, the authors investigated the factorial validity of the PCL with data from 236 cancer survivors who received a bone marrow or stem cell transplantation. The authors examined the fit of these data with the clinical model of 3 symptom clusters for PTSD, as proposed in the Diagnostic and Statistical Manual of Mental Disorders, and alternative models tested in prior research. By using confirmatory factor analysis the authors found that a 4-first-order-factor model of PTSD provided the best fit. The relations of PTSD symptoms with sociodemographic and medical variables were also explored.

Adolescent↗
PubMed2006

Investigating different factor structures of the psychopathy checklist: youth version: confirmatory factor analytic findings.

There has been a recent push to extend the construct of psychopathy into adolescence, primarily as a result of the impressive reliability, validity, and utility of this construct in samples of adults. The value of this work rests, however, on creating an equally reliable and valid assessment tool for adolescents. One promising measure is the Psychopathy Checklist: Youth Version (A. E. Forth, D. S. Kosson, & R. D. Hare, 2003). The current study uses a large, diverse sample of serious adolescent offenders to assess the overall fit of various underlying factor structures of this measure and to test the equivalence of these models across sex and race/ethnicity. The results suggest that either a 3- or 4-factor model provides the best overall fit and that these models are invariant across sex and race/ethnicity. The decision to use the 3- or 4-factor model will likely hinge on researchers' underlying conceptualization of psychopathy, specifically whether antisocial behavior is viewed as a core feature of this construct.

Adolescent↗
PubMed2006

Factor structure of the Hare Psychopathy Checklist: Youth Version (PCL: YV) in incarcerated adolescents.

Two studies are reported on the underlying dimensions of the psychopathy construct in adolescents as measured by the Hare Psychopathy Checklist-Youth Version (PCL: YV; Forth, Kosson, & Hare, 2003). In Study 1, the PCL: YV item ratings for 505 male adolescents incarcerated in 5 different settings in North America were used to test the fit of 3 models that have been hypothesized to represent the structure of psychopathy in adults. A 4th model based on parceling PCL: YV items was also tested. In Study 2, these models were tested with a sample of 233 male adolescents incarcerated in 2 facilities in the United Kingdom. Model fit results indicated that the 18-item 4-factor model developed by Hare (2003) and a modified version of a 13-item 3-factor model developed by Cooke and Michie (2001) were associated with generally good fit. Because the 4-factor model is a less saturated model than the 3-factor model (better parameter to data point ratio), it survived a riskier test of disconfirmation. Implications for the nature of psychopathy in youth are discussed.

Adolescent↗
PubMed2006

Deconstructing therapy outcome measurement with Rasch analysis of a measure of general clinical distress: the Symptom Checklist-90-Revised.

Rasch analysis was used to illustrate the usefulness of item-level analyses for evaluating a common therapy outcome measure of general clinical distress, the Symptom Checklist-90-Revised (SCL-90-R; Derogatis, 1994). Using complementary therapy research samples, the instrument's 5-point rating scale was found to exceed clients' ability to make reliable discriminations and could be improved by collapsing it into a 3-point version (combining scale points 1 with 2 and 3 with 4). This revision, in addition to removing 3 misfitting items, increased person separation from 4.90 to 5.07 and item separation from 7.76 to 8.52 (resulting in alphas of .96 and .99, respectively). Some SCL-90-R subscales had low internal consistency reliabilities; SCL-90-R items can be used to define one factor of general clinical distress that is generally stable across both samples, with two small residual factors.

Adult↗
PubMed2006

Reliability and construct validity of the psychopathy checklist - revised for Latino, European American, and African American male inmates.

The utility of the psychopathy construct in predicting laboratory deficits, criminal behavior, response to intervention, and recidivism has been well documented in European American populations. However, less is known about the manifestation and correlates of psychopathy in Latino and African American populations. The present study examined the reliability and construct validity of the Psychopathy Checklist - Revised (PCL-R; R. D. Hare, 2003) in 83 Latino inmates compared with matched samples of African Americans and European Americans. Results provide preliminary evidence that the PCL-R provides a reliable and valid measure of psychopathy in Latinos, with generally similar patterns emerging across external correlates; however, some ethnic group differences were noted for relationships between psychopathy indicators and some external correlates.

Adolescent↗
PubMed2006

Concurrent and predictive validity of the psychopathy checklist: youth version across gender and ethnicity.

The concurrent and predictive validity of the Psychopathy Checklist: Youth Version (PCL:YV) were examined across gender and ethnicity using multiple outcome measures on a community-based sample of 130 adjudicated youths. The PCL:YV demonstrated concurrent validity with externalizing behavior problems but, it is important to note, was also associated with internalizing measures of negative affect. With a mean follow-up period of 3 years, the PCL:YV was found to predict general and violent recidivism in male, Native Canadian, and Caucasian youths. However, the PCL:YV demonstrated weaker concurrent and predictive validity with girls and failed to predict nonviolent recidivism in all subgroups. Implications of the findings for clinical practice are discussed.

Adolescent↗
PubMed2000

Cross-ethnic equivalence of the Hopkins Symptom Checklist-21 in European American, African American, and Latino college students.

To determine if the Hopkins Symptom Checklist-21 demonstrates equivalent validity across different ethnic groups, the authors tested the factor structure of the instrument with a sample of European American (n = 514), African American (n = 154), and Latino (n = 229) college students using confirmatory factor analysis with tests of invariance across groups. For the most part, a 3-factor model with Performance, General, and Somatic factors fit equally well for all 3 racial/ethnic groups. Differences involved only a few items in terms of either the strength of a factor loading or an error term. The results generally support the validity of the use of the instrument for measurement of distress in these different racial/ethnic groups.

Adult↗
PubMed2003

Culture and validity of the Symptom Checklist-90-Revised and Profile of Mood States in a New Zealand student sample.

New Zealand students' performance was examined on assessments of psychopathology and mood as compared to normative data from the United States. New Zealand university students (N = 137) completed the Symptom Checklist-90-Revised (SCL-90-R) and Profile of Mood States (POMS). Mean performances differed significantly from normative data for each SCL-90-R scale. No significant differences were found for the POMS scales. Within the sample, European (n = 82), Maori (n = 24), and Asian (n = 24) participants differed significantly on SCL-90-R obsessive-compulsive, phobic anxiety, and anxiety scales and POMS scales of tension and confusion. Implications for assessment of New Zealand samples are discussed.

Adolescent↗
PubMed1990

Measuring psychological and physical distress in cancer patients: structure and application of the Rotterdam Symptom Checklist.

Use of the Rotterdam Symptom Checklist (RSCL) to measure psychological and physical distress as experienced by cancer patients, is discussed in this paper. The stability of the structure of the RSCL was assessed in principal component analyses in three studies: one concerning cancer patients during either chemotherapy or follow-up (n = 86), one done in patients undergoing chemotherapy for advanced ovarian cancer (n = 56), and the third dealing with cancer patients under treatment, disease-free 'patients', and 'normal' controls (n = 611). The psychological dimension proved to be stable across populations. A scale based on this factor was highly reliable (Cronbach's alpha 0.88-0.94). The physical distress is reflected by several dimensions in a homogeneous population (pain, fatigue, gastrointestinal complaints) and undimensionally in a heterogeneous population. Reliability of the physical distress scales is good (0.71-0.88). The current components of the RSCL and the use of individual and disease specific symptoms are discussed.

Adult↗
PubMed2003

A psychometric analysis of the Needs Assessment Checklist (NAC).

DESIGN: Consecutive series, psychometric validation study. OBJECTIVE: To evaluate the psychometric reliability and validity of a clinically focused measure of rehabilitation outcome, known as the Needs Assessment Checklist (NAC). SETTING: Tertiary care, spinal cord injury centre (National Spinal Injuries Centre), Stoke Mandeville Hospital, UK. PARTICIPANTS: In total, 43 spinal cord injured (SCI) in-patients (38 male and five female). During this study all patients actively participated in a comprehensive, multidisciplinary Goal Planning and Needs Assessment Rehabilitation Programme. INTERVENTION: Test-retest and concurrent assessment, conducted in one administration, within a week of routine clinical assessment. Reliability analyses were performed examining the NAC's internal consistency, test-retest reliability, and concurrent validity. MAIN OUTCOME MEASURES: The NAC is a rehabilitation outcome measure, specifically developed for the SCI population, which is used to assess patient attainment in core rehabilitation areas at mobilisation and prior to discharge. The Spinal Cord Independence Measure (SCIM) and Hospital Anxiety and Depression Scale (HADS) were also employed as comparable benchmark assessment measures with established psychometric properties. Patient comments were gained during this administration, rating the NAC with regard to its usefulness, clarity, and personal relevance. RESULTS: Reliability analyses yielded high internal consistency coefficients (mean alpha = 0.8587, SD = 0.918). All subscales performed above the specified level (0.7). The mean item-internal validity correlation for NAC subscales was 0.5921 (SD = 0.1411). Test-retest correlations ranged between 0.694 (Bladder Management) and 0.904 (Skin Management) (P < or = 0.01). The mean percentage of agreement between clinical and test-retest assessment over all NAC subscales was 75.5% (SD = 5.01%). Concurrent validity analyses correlating individual subscale scores with SCIM and HADS subscales produced high correlations between 0.850 (Activities of Daily Living with SCIM Self-Care, P < or = 0.01) and -0.466 (Psychological Issues with HADS-Depression, P < or = 0.01). Significant differences were identified between injury category within NAC subscales; however, this was not consistent. The NAC achieved high patient ratings, attaining mean ratings of seven (out of 10) for usefulness, and eight for its clarity and personal relevance. CONCLUSION: The findings of this study indicate that the NAC is a psychometrically reliable and valid clinical measure of rehabilitation outcome.

Activities of Daily Living↗
PubMed1998

The Checklist of Challenging Behaviour and its relationship with the Psychopathology Inventory for Mentally Retarded Adults.

The Checklist of Challenging Behaviour (CCB) was developed to survey the prevalence of challenging behaviour among people with intellectual disability. It describes 32 behaviours, and data are collected on the frequency, management difficulty and severity of these states. The present paper reports on the relationship between challenging behaviour (as measured by the CCB) and mental health (as measured by the Psychopathology Inventory for Mentally Retarded Adults). In addition, it discusses the differences between the two groups of clients used in the study, i.e. hospital and community subject groups, in terms of challenging behaviour and mental health.

Adult↗
PubMed1998

The latent variable structure of the Compulsive Behaviour Checklist in people with Prader-Willi syndrome.

The presence and severity of compulsive behaviours may be evaluated via the Compulsive Behaviour Checklist (CBC) and this instrument has been successfully employed in people with intellectual disability. However, the applicability of the overall CBC scoring system, which entails tallying the number of behavioural categories represented (i.e. five) as well as the number of individual behaviours endorsed (i.e. 25), is not known in the population with Prader-Willi syndrome (PWS). The present investigation examined the latent variable structure of the CBC in people with PWS in order to identify possible population-specific scoring and interpretation considerations. The 25 behaviour-specific items of the CBC were analysed for 75 people with PWS (44 females and 31 males) aged between 4 and 41 years (mean +/- SD = 11.4+/-9.4) via factor analysis with principal component extraction and equamax rotation. The most suitable solution was determined on the basis of multiple empirical criteria: (1) the scree test; (2) eigenvalues >1.00; (3) salient loadings >0.30; (4) the clarity of item assignment to a single latent dimension; (5) the internal consistency of the latent dimension(s) (coefficient alpha > or = 0.70); and (6) item-total correlations between 0.20 and 0.79. In addition, solutions were examined with respect to psychological theory and previous research. A 'general factor' (i.e. single latent dimension) solution which adhered to all a priori criteria was indicated. Twenty-four out of 25 items achieved salient loadings ranging from 0.46 to 0.80 on the general factor. The single item which failed to achieve salience, 'deviant grooming-skin picking', exhibited both substantial unique variance (0.997) and moderate reliability (r = 0.59, P<0.001). The internal consistency of the general factor was strong (alpha = 0.93) and all salient items were suitably correlated with the unit-weighted total score (r(item-total) = 0.41-0.77). The traditional CBC scoring system, which includes tallying the number of categories represented, would not be relevant in this PWS sample. In addition, the recommended tallying of the number of individual behaviours endorsed does not reflect the empirically indicated notion of compulsive behaviour in this special population. These findings indicate that the 24 salient items should be scored as a unit-weighted composite and that the score on the substantially unique item (skin picking) should be considered a separate measure when evaluating compulsive behaviours via the CBC in people with PWS.

Adolescent↗
PubMed2003

Assessment of change with the Developmental Behaviour Checklist.

BACKGROUND: The Developmental Behaviour Checklist (DBC) is a 96-item instrument designed for assessing behavioural and emotional problems among young people with intellectual disability. METHODS: The present study investigated the validity of the DBC as a measure of change. Changes in individual's DBC scores were correlated with changes in expert clinicians' ratings of the same subjects. RESULTS: A high correlation was found between expert clinician ratings of change in behaviour and change in the total behaviour problem score of the DBC. CONCLUSIONS: The DBC is able to measure changes in behaviour and emotions which are recognized by an experienced clinician who is following the progress of a child with ID.

Adolescent↗
PubMed1999

Confirmation that Child Behavior Checklist clinical scales discriminate juvenile mania from attention deficit hyperactivity disorder.

OBJECTIVE: To determine whether boys meeting diagnostic criteria for juvenile mania and attention deficit hyperactivity disorder (mania-ADHD) may be distinguished from boys with ADHD alone on a range of clinical and family variables. METHODOLOGY: Boys aged 9-13 years with mania-ADHD (n = 25), ADHD alone (n = 99), or no psychiatric diagnosis (n = 27) were compared on parent and teacher report Child Behavior Checklists (CBCL) and Conners Questionnaires, self-report CBCLs, patterns of comorbidity, intellectual functioning, and family variables. RESULTS: Mania-ADHD subjects had significantly higher mean ratings than ADHD only subjects on the parent CBCL for the Withdrawn, Thought Problems, Delinquent Behavior and Aggressive Behavior scales and significantly higher rates of comorbid depression, anxiety and psychotic symptoms. Other variables did not distinguish the mania-ADHD and ADHD only groups. CONCLUSIONS: These data confirm previous research indicating that the CBCL may be used to assist in the clinical identification of manic children.

Adolescent↗