Publications (12) View all
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Article: Drinking correlates of DSM-IV alcohol use disorder diagnostic orphans in college students.
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ABSTRACT: One major limitation of the DSM-IV criteria for alcohol abuse and dependence is that a cluster of individuals who endorse a subthreshold number of dependence criteria and no abuse criteria do not receive a formal diagnosis; despite elevated risk for alcohol-related problems relative to those with an abuse diagnosis. These individuals have been referred to as diagnostic orphans. The primary aim of this study was to examine alcohol use correlates of a group of diagnostic orphans in a sample of 396 nontreatment seeking college students who reported drinking on at least one occasion in the last 90 days. DSM-IV criteria were assessed using a modified version of the Composite International Diagnostic Interview-Substance Abuse Module (CIDI-SAM). Diagnostic orphans represented 34.1% (n = 135) of the original sample who did not receive a formal diagnosis; with the most frequently endorsed dependence criteria being tolerance and drinking larger/longer amounts than intended. Diagnostic orphans reported a range of alcohol-related negative consequences and reported greater frequencies of social and enhancement drinking motives in comparison to coping motives. They were similar to alcohol abusers and dissimilar to those with dependence or those without a diagnosis on alcohol consumption, alcohol problem severity, drinking motives and restraint variables. The present findings indicate that diagnostic orphans in college students represent a distinct group of drinkers who may be at risk for the development of alcohol use disorders and may be in need of intervention, given their similarity to those with an abuse diagnosis. Prevention and intervention efforts across college campuses should target this group to prevent escalation of alcohol problem severity.American Journal on Addictions 05/2012; 21(3):233-42. · 1.74 Impact Factor -
Article: Modeling the dimensionality of DSM-IV alcohol use disorder criteria in a nationally representative sample of college students.
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ABSTRACT: This study examined the dimensionality of DSM-IV alcohol use disorder (AUD) criteria in a nationally representative sample of college students (N = 4,605) using latent variable techniques. We used data from the 2009 National Survey of Drug Use and Health and selected those who were currently enrolled in college and current drinkers. Confirmatory factor analysis provided support for a one-factor solution of the AUD criteria. Item Response Theory analyses indicated that the alcohol abuse and dependence criteria severity parameters were intermixed along the AUD severity continuum with high discrimination parameters. Findings support reformulating the current AUD diagnostic system for the DSM-V. Study's limitations are noted.Substance Use & Misuse 04/2012; 47(10):1073-85. · 1.10 Impact Factor -
Article: Delineating potential mechanisms of implicit alcohol cognitions: drinking restraint, negative affect, and their relationship with approach alcohol associations.
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ABSTRACT: Problem drinkers may use alcohol to avoid negative mood states and may develop implicit cognitive associations between negative emotional states and reinforcing properties of drinking. It is paradoxical that attempts to control drinking, such as among those high in drinking restraint, may inadvertently increase desire to drink and subsequent alcohol consumption, and this may be exaggerated under times of emotional distress when urges to drink are high. We examined whether individuals who are high on drinking restraint would demonstrate stronger alcohol-related thoughts elicited by stimuli that represent the desire to use alcohol, in response to stronger versus weaker negative mood arousal. Seventy hazardous drinkers completed measurements of drinking restraint, alcohol consumption, and consequences of use. After being randomized to view negative or positive pictures sets, participants completed an Implicit Association Task (IAT) to test differences in the strength of the association between desire to approach or avoid alcohol or water cues, and then a measurement of subjective craving following the IAT. Regression analyses showed that trait restriction not temptation was positively related to IAT scores, after controlling for relevant covariates and explained 7% of the total variance. Trait temptation not IAT predicted subjective craving. Negative affect was unrelated to IAT scores, singly or in conjunction with measures of drinking restraint, contrary to predictions. In sum, implicit alcohol cognitions are related to attempts to restrict drinking not temptation to drink and are less strongly influenced by mood state.Psychology of Addictive Behaviors 02/2012; 26(2):318-24. · 2.09 Impact Factor -
Article: Modeling the severity of drinking consequences in first-year college women: an item response theory analysis of the Rutgers Alcohol Problem Index.
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ABSTRACT: The present study examined the latent continuum of alcohol-related negative consequences among first-year college women using methods from item response theory and classical test theory. Participants (N = 315) were college women in their freshman year who reported consuming any alcohol in the past 90 days and who completed assessments of alcohol consumption and alcohol-related negative consequences using the Rutgers Alcohol Problem Index. Item response theory analyses showed poor model fit for five items identified in the Rutgers Alcohol Problem Index. Two-parameter item response theory logistic models were applied to the remaining 18 items to examine estimates of item difficulty (i.e., severity) and discrimination parameters. The item difficulty parameters ranged from 0.591 to 2.031, and the discrimination parameters ranged from 0.321 to 2.371. Classical test theory analyses indicated that the omission of the five misfit items did not significantly alter the psychometric properties of the construct. Findings suggest that those consequences that had greater severity and discrimination parameters may be used as screening items to identify female problem drinkers at risk for an alcohol use disorder.Journal of studies on alcohol and drugs 11/2011; 72(6):981-90. · 2.25 Impact Factor -
Article: Toward a hierarchical model of criminal thinking: evidence from item response theory and confirmatory factor analysis.
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ABSTRACT: Item response theory (IRT) methods were applied to items from the 80-item Psychological Inventory of Criminal Thinking Styles (PICTS; G. D. Walters, 1995) to determine how well they measure the latent trait of criminal thinking in a group of 2,872 male medium security prison inmates. Preliminary analyses revealed that the 64 PICTS thinking style items, 32 PICTS proactive criminal thinking items, and 24 PICTS reactive criminal thinking items were sufficiently unidimensional to meet the local independence requirements of IRT. The PICTS was fitted to a 2-parameter logistic-graded response IRT model, the results of which showed that the 8 items measuring denial of harm (Sentimentality) displayed weak discrimination (a < 0.5), whereas most of the proactive and reactive items displayed moderate to good discrimination (a > 1.0). Information function analysis revealed that all 3 components of a hierarchical model of criminal thinking--PICTS total scale, PICTS proactive factor, and PICTS reactive factor--displayed greater precision at higher rather than lower levels of the trait dimension. The study findings indicate that items from the PICTS Sentimentality scale do a poor job of measuring general criminal thinking, whereas items from the other 7 PICTS thinking style scales provide their most precise estimates at the upper end of the trait dimension.Psychological Assessment 06/2011; 23(4):925-36. · 2.99 Impact Factor
