Development and initial validation of an underreporting of Disordered Eating Behaviors Scale.

The purpose of this study was to develop the Underreporting of Disordered Eating Behaviors Scale (UDEBS) to detect attempts by respondents to underreport eating patterns that reflect symptoms of an eating disorder. In "Study 1", the scale and validity measures were administered via an online survey to 692 undergraduates. In "Study 2", these measures were administered to 810 undergraduates using a simulation design where participants were randomized to four conditions: (1) answering as truthfully as possible, or as if they are trying to hide (2) Binge Eating Disorder (BED), (3) Anorexia Nervosa (AN), or (4) Bulimia Nervosa (BN). "Study 1" results suggested that men and women have divergent UDEBS distributions and item endorsement rates; therefore, separate analyses were performed by gender. Individuals who scored above one standard deviation (SD) on the UDEBS reported less body dissatisfaction and disordered eating (ps < 0.05) than those who scored one SD below. In "Study 2" women who were instructed to hide an eating disorder reported significantly higher UDEBS scores than women instructed to answer truthfully. There were no significant differences between conditions for men. The final 15-item scale indicated that women who complied with instructions to underreport produced scores 1.45 (BN) to 1.72 (AN) times greater than the truthful responding condition. This novel scale can potentially assist in detecting women who underreport in relation to disordered eating, which may be useful in research and clinical contexts where underreporting is a concern. Future research is needed with men and clinical samples.Level I Evidence obtained from an experimental study.

The Moderating Influence of Disorder on Coached Overreporting Using the MMPI-2-RF.

Overreporting has always been a concern within psychological evaluations. The Minnesota Multiphasic Personality Inventory-2-Restructured Form (Ben-Porath & Tellegen, 2008/2011 ) contains validity scales designed for detecting noncredible responses. In this study, 270 undergraduates were instructed to feign either schizophrenia, posttraumatic stress disorder (PTSD) or generalized anxiety disorder (GAD); some participants were coached on symptoms and validity scales. Results at both the individual protocol and mean validity scale score levels suggest that each feigned disorder moderates the effectiveness of coaching on validity scale detection. One finding of this study suggests that schizophrenia is generally more difficult to successfully feign than PTSD or GAD. Another finding suggests that the majority of individuals able to avoid detection as symptom overreporters are able to successfully endorse at least some disorder-relevant symptoms. We suggest that future research focus on the systematic exploration of other factors influencing the effectiveness of validity scales as well as the development of validity scales designed to detect the overreporting of internalizing forms of psychopathology.

Construct Validity of the MMPI-2-RF Triarchic Psychopathy Scales in Correctional and Collegiate Samples.

This study examined the MMPI-2-RF (Ben-Porath & Tellegen, 2008/2011) Triarchic Psychopathy scales recently developed by Sellbom et al. ( 2016 ) in 3 separate groups of male correctional inmates and 2 college samples. Participants were administered a diverse battery of psychopathy specific measures (e.g., Psychopathy Checklist-Revised [Hare, 2003 ], Psychopathic Personality Inventory-Revised [Lilienfeld & Widows, 2005 ], Triarchic Psychopathy Measure [Patrick, 2010 ]), omnibus personality and psychopathology measures such as the Personality Assessment Inventory (Morey, 2007 ) and Personality Inventory for DSM-5 (Krueger, Derringer, Markon, Watson, & Skodol, 2012 ), and narrow-band measures that capture conceptually relevant constructs. Our results generally evidenced strong support for the convergent and discriminant validity for the MMPI-2-RF Triarchic scales. Boldness was largely associated with measures of fearless dominance, social potency, and stress immunity. Meanness showed strong relationships with measures of callousness, aggression, externalizing tendencies, and poor interpersonal functioning. Disinhibition exhibited strong associations with poor impulse control, stimulus seeking, and general externalizing proclivities. Our results provide additional construct validation to both the triarchic model and MMPI-2-RF Triarchic scales. Given the widespread use of the MMPI-2-RF in correctional and forensic settings, our results have important implications for clinical assessment in these 2 areas, where psychopathy is a highly relevant construct.

Distinguishing Personality Psychopathology Five (PSY-5) characteristics associated with violent and nonviolent juvenile delinquency.

This study examined the relationship between the Minnesota Multiphasic Personality Inventory-Adolescent (MMPI-A) Personality Psychopathology Five (PSY-5) scales and violent and nonviolent juvenile delinquency. Participants were 260 adolescent boys and girls in a forensic setting. Results indicated that Disconstraint (DISC), a marker of behavioral disinhibition and impulsivity, was associated with nonviolent delinquency, whereas Aggressiveness (AGGR), which is characterized by the use of instrumental aggression and interpersonal dominance, was specifically associated with violent delinquency. These findings are consistent with expectations based on empirical findings in the broader personality literature linking the construct of disinhibition with externalizing psychopathology as well as the literature identifying callous-unemotional aggression as a risk factor for violence.

On the convergence between PSY-5 domains and PID-5 domains and facets: implications for assessment of DSM-5 personality traits.

The DSM-5 Personality and Personality Disorders workgroup and their consultants have developed the 220-item, self-report Personality Inventory for the DSM-5 (PID-5) for direct assessment of the proposed personality trait system for DSM-5; however, most practicing clinical psychologists will likely continue to rely on separate omnibus measures to index symptoms and traits associated with psychopathology. The Minnesota Multiphasic Personality Inventory-2 Restructured Form (MMPI-2-RF) is one such measure and assesses the Personality Psychopathology Five (PSY-5) domains, which are conceptual cognates of the DSM-5 trait domains. The current study examined the associations between the MMPI-2-RF PSY-5 scales and the DSM-5 trait domains and facets indexed by the PID-5. A clear pattern of convergence was found indicating that each of the PSY-5 scales was most highly correlated with its conceptually expected PID-5 counterpart (rs = .44-.67; Mdn r = .53) and facet correlations generally showed the same pattern. Similarly, when each of the PSY-5 scales was regressed onto the PID-5 domains, the conceptually expected pattern of associations emerged even more clearly. Finally, a joint exploratory factor analysis with the PSY-5 and PID-5 trait facet scales indicated a five-factor solution that clearly resembled both of the PSY-5/DSM-5 trait domains. These results show clear evidence that the MMPI-2-RF has utility in the assessment of dimensional personality traits proposed for the upcoming DSM-5.

Does the disorder matter? Investigating a moderating effect on coached noncredible overreporting using the MMPI-2 and PAI.

The use of psychological tests to help identify the noncredible overreporting of psychiatric disorders is a long-standing practice that has received considerable attention from researchers. The purpose of this study was to experimentally determine whether feigning specific psychiatric disorders moderated the influence of coaching on the detection of noncredible overreporting using the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) and the Personality Assessment Inventory (PAI). Using a 2 × 3 experimental analogue design, 265 undergraduates were asked to feign schizophrenia, posttraumatic stress disorder, or generalized anxiety disorder and were either coached about validity scales and disorders or not. The results of this study indicated that the specific psychiatric disorder being feigned did moderate the impact coaching had on the detection of overreported psychopathology using several scales on the MMPI-2 and PAI. Future research examining noncredible overreporting should take into account the impact caused by the interaction of psychiatric disorder with coaching on the detection of symptom overreporting and also identify other important moderating/mediating variables in order to develop more effective means of identifying response bias.

Correlates of MMPI--a scales in acute psychiatric and forensic samples.

The purpose of this study was to expand the empirical basis for interpretation of the Minnesota Multiphasic Personality Inventory-Adolescent (MMPI-A; Butcher et al., 1992). Participants were 157 boys from a forensic setting and 197 girls from an acute psychiatric inpatient setting. Criterion variables were identified from sources such as psychiatrist report, parent report, and psychosocial history. Results generally support the construct validity of MMPI-A scales. Scales measuring internalizing problems were more highly correlated with criterion measures of internalizing behaviors than measures of externalizing behaviors, whereas scales measuring externalizing problems were more highly correlated with externalizing variables than with internalizing criteria. Implications of this study include an expanded empirical foundation for interpretation of the MMPI-A, greater understanding of the constructs it measures, and evidence supporting the generalizability of these constructs across settings.