Kimberly S. Harrison

The MMPI–2 Restructured Clinical Scales: A Paradigmatic Shift in Scale Development

Tellegen et al. (2003) proposed fundamental changes in MMPI–2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) scale development by discarding empirical scale development in favor of construct validation via Jacksons (1970) sequential system of scale development. As a result of their efforts, a general distress factor (Demoralization) was identified and 8 Restructured Clinical (RC) Scales were developed. Using 7,330 clinical cases from Caldwells (1997) data set, in this study, we sought to cross-validate the MMPI–2 RC Scales. Scale homogeneity was confirmed with high alpha coefficients and interitem correlations in the expected range. We also achieved a major objective of reducing interscale correlations. In replicating Tellegen et al.s principal components analysis, we achieved a high concordance for 6 of the 8 RC Scales. We critically examine these results in light of Jacksons construct validation. We discuss the clinical usefulness of the MMPI–2 RC Scales within the context of current and future research.

A Comparison of Factor Models on the PCL-R With Mentally Disordered Offenders The Development of a Four-Factor Model

For more than a decade, researchers and practitioners have generally accepted a two-factor model for the Psychopathy Checklist-Revised (PCL-R) composed of core personality features and an antisocial lifestyle. Very recently, Cooke and Michie (2001) proposed a three-factor solution that divided the core personality features into two dimensions while eliminating antisocial behavior. This study of male, mentally disordered offenders (N = 96) directly compared factor models via confirmatory factor analysis (CFA). When using testlets to combine theoretically similar items into single ratings, the nested three-factor model was an excellent fit. Of importance, the development of a four-factor model with the inclusion of antisocial items also produced an excellent fit. Combined with recent research, these findings have important ramifications for the construct validity of the PCL-R.

Axis I Screens and Suicide Risk in Jails: A Comparative Analysis.

Mental health professionals conducting screenings in jail settings face formidable challenges in identifying inmates at risk for major depression and suicide. Psychologists often rely on correctional staff to provide initial appraisals of those inmates requiring further evaluation. In a sample of 100 jail detainees, the effectiveness of two specialized screens (the Referral Decision Scale and Mental Disability/Suicide Intake Screen or MDSIS) and one general screen (Personality Assessment Screener or PAS) was evaluated. For suicidal ideation, the MDSIS composite score evidenced promise (sensitivity = 1.00; specificity = 0.71). In ruling out major depression, the PAS Negative Affect subscale was useful for the inmate participants.

The Role of Suggestibility in Determinations of Miranda Abilities: A Study of the Gudjonsson Suggestibility Scales

Traditionally, high levels of suggestibility have been widely assumed to be linked with diminished Miranda abilities, especially in relationship to the voluntariness of waivers. The current investigation examined suggestibility on the Gudjonsson Suggestibility Scales in a multisite study of pretrial defendants. One important finding was the inapplicability of British norms to American jurisdictions. Moreover, suggestibility appeared unrelated to Miranda comprehension, reasoning, and detainees’ perceptions of police coercion. In testing rival hypotheses, defendants with high compliance had significantly lower Miranda comprehension and ability to reason about exercising Miranda rights than their counterparts with low compliance. Implications of these findings to forensic practice are examined.