Examining gender as moderating the association between psychopathy and substance abuse

Previous research has shown a significant association between psychopathy and substance abuse. To date, these associations have not been compared between men and women in forensic or correctional samples, an important topic in light of some empirical findings indicating that psychopathy manifests differently across gender in other contexts. The current study was designed to address this gap in the literature using archival data sets consisting of four large samples derived from forensic, correctional, and university settings, with different measures for psychopathy, alcohol, and substance use. As expected, psychopathy (particularly traits reflective of disinhibition/social deviance) was significantly and moderately correlated with alcohol and substance abuse in all four samples; however, with one minor exception, hierarchical regression analyses revealed no significant moderating effects of gender on these associations. These findings indicate that, although psychopathy may be manifested differently across gender in some ways, substance abuse is likely not one of them.     

Use of the MMPI-2 in the treatment of offenders

The MMPI-2 is among the most frequently relied upon inventories for personality assessment. The test is utilized across a variety of nonforensic settings (e.g., psychiatric inpatient and outpatient) as an aid in formulating treatment plans, assessing treatment progress, and measuring treatment outcome. The MMPI-2 can also be utilized in forensic settings in a manner similar to its use in other settings, such as identifying treatment goals and evaluating treatment efficacy. Various MMPI-2 scales can identify an individual's treatment needs, reveal potential obstacles to treatment, and serve as a measure of treatment efficacy. Such information can be very helpful to the clinician in formulating or modifying a course of treatment for offenders. This article provides an overview of the use of the MMPI-2 in treatment planning and describes the relation between scores on the validity, clinical, and various supplementary scales and treatment-related issues.     

Monopoly vs. competition in light of extraction norms

This note demonstrates that whether the market is competitive or monopolistic need not be the result of ideology, political power or non-convexity of the technology. The answer can be determined by a government that maximizes the extracted resources from the alternative market structures. Our claim is illustrated by assuming that demand and supply are linear functions and that the government can extract the same share of the producers?? profit under the alternative market structures. This share can be extracted from the actual producers or from the potential producers who take part in the contest to get a license to produce.     

The MMPI-2 Symptom Validity Scale (FBS) Is an Empirically Validated Measure of Overreporting in Personal Injury Litigants and Claimants: Reply to Butcher et al. (2008)

We address issues raised by Butcher et al. (Psychological Injury and the Law 1:191–209, 2008) in their critique of the Minnesota Multiphasic Personality Inventory-2 Symptom Validity Scale (FBS) and show that their analyses and conclusions are based on faulty premises, a misunderstanding of basic concepts in the assessment of overreporting, a selective review of the literature and mischaracterization of the findings they do cite, problematic analyses of a dataset that had already been similarly analyzed, and a flawed analysis of a legal case they discuss. We complement the review of existing research with some new findings that provide further empirical support and clarification of current interpretive recommendations for proper use of the FBS in evaluations of personal injury litigants and claimants.     

The MMPI-2 Symptom Validity Scale (FBS) is an Empirically-Validated Measure of Over-reporting in Personal Injury Litigants and Claimants: reply to William et al. (2009)

We respond briefly to Williams et al.'s (Psychological Injury and the Law 2:182–197, 2009) most recent effort to critique the MMPI-2 Symptom Validity scale, noting that the authors repeat many of the unfounded claims and conclusions of Butcher et al. (Psychological Injury and the Law 1:191–209, 2008) while ignoring and/or reflecting a misunderstanding of many of the points raised in our rebuttal. Rather than repeat our detailed responses to their initial review, we limit this comment to addressing new points Williams et al. (Psychological Injury and the Law 2:182–197, 2009) bring up and offer a succinct summary of the issues raised in this exchange.     

Associations between MMPI-2-RF (Restructured Form) and Inwald Personality Inventory (IPI) Scale Scores in a Law Enforcement Preemployment Screening Sample

The MMPI-2 is widely used in assessments of police officer candidates. The MMPI-2-RF, composed of 338 of the 567 MMPI-2 items, is designed to measure the core clinical constructs assessed by the MMPI-2, but in a more psychometrically sound and efficient manner (Ben-Porath and Tellegen 2008/2011). Law enforcement comparison group data are embedded in the scoring software for the inventory, and reported in the User’s Guide for the MMPI-2-RF Police Candidate Interpretive Report (PCIR; Corey and Ben-Porath 2014). In the present concurrent validity study, conceptually based hypotheses regarding associations between MMPI-2-RF scales and scores on the Inwald Personality Inventory (IPI, Inwald et al. 1982; Hilson Research 2006), a test specifically designed to screen law enforcement officers, were tested with a sample of 277 male, full-time police officer candidates from four separate police departments of varying sizes examined after a conditional offer of employment was tendered. The majority of participants were Caucasian (69%), followed by African-American (27%), or Other/Mixed ethnicity (4%). Our hypotheses were largely borne out, lending support to the construct validity of the MMPI-2-RF and the ability of scores on the inventory to assess variables relevant to police candidate evaluations.