Andrew Littlefield, Ph.D.

Research Interests

Broad: psychopathology, substance use behaviors, addiction processes, personality, genetics, quantitative methodology, development, suicidality

Specific: alcohol use disorders, personality maturation, impulsigenic traits, drinking motives, latent variable modeling, advanced methods for prospective data, alcohol biomarkers, granular assessments of suicide risk

Awards and Honors

2020  Assessment Innovation Grant Award
2018  Chancellor's Council Distinguished Research Award
2018  College of Arts & Sciences Excellence in Research Award for the Social Sciences
2016  Award for Excellence in Research, Mensa Education & Research Foundation and Mensa International, Ltd.
2014  Early Career Achievement Award, Addictive Behaviors Special Interest Group (SIG) within the Association for the Advancement of Cognitive and Behavioral Therapies.
2013  Excellence in Research Award, University of Mississippi Medical Center

Funding

 

03/18–12/19
Title: Enhancing Identification of Suicide Risk among Military Service Members and Veterans: A Machine Learning Approach to Suicidality.
Supporting Agency: Military Suicide Research Consortium, Department of Defense
Role: Sole PI

03/15–09/18
Title: RESeT West Texas: Rural Education for SBIRT in West Texas.
Supporting Agency: Substance Abuse and Mental Health Services Administration (SAMHSA); Screening, Brief Intervention and Referral to Treatment (SBIRT) Health Professions Student Training Grant
Role: TTU-PI (Multi-PI)

Complete List of Published Work

Publications to Date

Willms, Joshua O., Popp, R. Lisa, Jones, Betsy G., Babb, Franklyn, Cook, Ronald L., Nedumaran, Shruthiranjani N., Littlefield, Andrew K., & Trotter, David RM. (in press). Implementation of Screening, Brief Intervention, and Referral to Treatment (SBIRT) training in large cohorts of second year medical students at Texas Tech University Health Sciences Center. Alcoholism Treatment Quarterly.

Gette, J.A., Gissandaner, T.D., Littlefield, A.K., Simmons, C.R., & Schmidt, A.T. (in press). Modeling the adverse childhood experiences questionnaire – international version. Child Maltreatment.

Gette, J.A., Gissandaner, T.D., & Littlefield, A.K. (in press). Alcohol and cannabis cross motives, class analysis, and substance use among concurrent users. Substance Use and Misuse. https://doi.org/10.1080/10826084.2021.1967991

Gette, J.A., Stevens, A.K., Littlefield, A.K., Hayes, K.L, White, H.R., Jackson, K.M. (in press). Individual and COVID-19-specific indicators of compliance with mask use and social distancing: The importance of norms, perceived effectiveness, and state response. International Journal of Environmental Research in Public Health.

Littlefield, A. K., King, K. M., Acuff, S. F., Foster, K. T., Murphy, J. G., & Witkiewitz, K. (in press). Limitations of cross-lagged panel models in addiction research and alternative models: An empirical example using Project MATCH. Psychology of Addictive Behaviors. 

Blanchard, B. E., Stevens, A. K., & Littlefield, A. K. (in press). Differences in Alcohol-Related Protective Behavioral Strategies among Females and Male College Students. Addictive Behaviors.

Ellingson, J. M., Littlefield, A. K., Wood, P. K., & Sher, K. J. (in press). Delineating the changes and relations among alcohol involvement, impulse control, and sensation seeking during and after college: An application of exploratory latent growth models. Alcoholism: Clinical & Experimental Research. PMID: 33512731

Gette, J. A., Cundiff, J. M., Gissandaner, T. D., & Littlefield, A. K. (in press). Relations between cannabis use, socioeconomic status, and risk perceptions in a Hispanic/Latinx population. Journal of Ethnicity in Substance Abuse.

Littlefield, A. K., Cooke, J. T., Bagge, C., Glenn, C., Kleiman, E. M., Jacobucci, R., Millner, A. J., & Steinley, D. (in press). Machine learning to classify suicidal thoughts and behaviors: Implementation within the common data elements used by the military suicide research consortium. Clinical Psychological Science.

Littlefield, A. K., Lane, S. P., Gette, J. A., Watts, A. L., & Sher, K. J. (in press). The “Big Everything”: Integrating and investigating dimensional models of psychopathology, personality, pathological personality, and intelligence. Personality Disorders: Theory, Research, and Treatment.

Mitchell, S. M.,Cero, I., Littlefield, A. K., & Brown, S. L. (in press). Using categorical data analysis in suicide research: Considering clinical utility and practicality. Suicide and Life-Threatening Behavior.

Shi, M., Gette, J. A., Gissandaner, T. D., Cooke, J. T., & Littlefield, A. K. (in press). E-cigarette use among Asian Americans: a systematic review. Journal of Ethnicity in Substance Abuse.

Shi, M., Littlefield, A. K., & Stevens, A. K. (in press). Investigating differences in sex, race/ethnicity, and impulsivity across substance user profiles: a person-centered approach. Journal of American College Health: J of ACH, 1–9. Advance online publication. https://doi.org/10.1080/07448481.2019.1706532

2021

Jacobucci, R., Littlefield, A. K., Millner, A. J., Kleiman, E. M., & Steinley, D. (2021). Evidence of inflated prediction performance: A commentary on machine learning and suicide research. Clinical Psychological Science, 9, 129-134,

2020

Blanchard, B. E., Stevens, A. K., Sher, K. J., & Littlefield, A. K. (2020). Reexamining the psychometric properties of the Substance Use Risk Profile Scale. Assessment, 27(3), 454–471. https://doi.org/10.1177/1073191118820135

Gissandaner, T. D., Schmidt, A. T., Mastergeorge, A., Gette, J. A., & Littlefield, A. K. (2020). Does stress mediate the relation between caregivers' victimization and child behavioral outcomes? A prospective examination. Child Psychiatry & Human Development. https://doi.org/10.1007/s10578-020-01000-w

King, C. A., Brent, D., Grupp-Phelan, J., Shenoi, R., Page, K., Mahabee-Gittens, E. M., Chernick, L. S., Melzer-Lange, M., Rea, M., McGuire, T. C., Littlefield, A.K., & Casper, T. C. (2020). Five Profiles of Adolescents at Elevated Risk for Suicide Attempts: Differences in Mental Health Service Use. Journal of the American Academy of Child and Adolescent Psychiatry, 59(9), 1058–106. https://doi.org/10.1016/j.jaac.2019.10.015

Stevens, A. K., Blanchard, B. E., Talley, A. E., Brown, J. L., Halvorson, M. A., Janssen, T., King, K. M., & Littlefield, A. K. (2020). State-level impulsivity, affect, and alcohol: A psychometric evaluation of the momentary impulsivity scale across two intensive longitudinal samples. Journal of Research in Personality, 85, 103914. https://doi.org/10.1016/j.jrp.2020.103914

Yockey, R. A., Brown, J. L., Littlefield, A. K., & Talley, A. E. (2020). Self-esteem, Acculturative Stress, and Marijuana Use Among Hispanic College Students. Hispanic Journal of Behavioral Sciences, 42(3), 416-425. https://doi.org/10.1177/0739986320937478

2019

Blanchard, B. E., Stevens, A., Cann, A. T., & Littlefield, A. K. (2019). Regulate yourself: Emotion regulation and protective behavioral strategies in substance use behaviors. Addictive Behaviors, 92, 95-101.

Cole, A. B., Littlefield, A. K., Gauthier, J. M., & Bagge, C. L. (2019). Impulsivity facets and perceived likelihood of future suicide attempt among patients who recently attempted suicide. Journal of Affective Disorders, 257, 195-199.

Vergés, A., Littlefield, A. K., Arriaza, T., & Alvarado, M. E. (2019). Impulsivity facets and substance use initiation: A comparison of two models of impulsivity. Addictive Behaviors, 88, 61-66.

2018

Blanchard, B. E., Stevens, A. K., Acosta, I. S., Talley, A. E., Brown, J. L., & Littlefield, A. K. (2018). The influence of motives on alcohol-and sex-related behaviors among female college students. Drug and Alcohol Dependence, 185, 120-126.

Blanchard, B. E., Stevens, A. K., & Littlefield, A. K. (2018). Protective behavioral strategies and alcohol consumption: Are all strategies equal? Alcoholism Treatment Quarterly, 36, 72-85. https://doi.org/10.1080/07347324.2017.1387034

Ellingson, J. M., Slutske, W. S., Vergés, A., Littlefield, A. K., Statham, D. J., & Martin, N. G. (2018). A multivariate behavior genetic investigation of dual-systems models of alcohol involvement. Journal of Studies on Alcohol and Drugs, 79, 617-626.

Haeny, A. M., Littlefield, A. K., Wood, P. K., & Sher, K. J. (2018). Method effects of the relation between family history of alcoholism and parent reports of offspring impulsive behavior. Addictive Behaviors, 87, 251-259.

King, K. M., Littlefield, A. K., McCabe, C. J., Mills, K. L., Flournoy, J., & Chassin, L. (2018). Longitudinal modeling in developmental neuroimaging research: Common challenges, and solutions from developmental psychology. Developmental Cognitive Neuroscience, 33, 54-72.

Martin, C.S., Vergés, A., Langenbucher, J. W., Littlefield, A. K., Chung, T., Clark, D. B., & Sher, K. J. (2018). Algorithm analysis of the dsm-5 alcohol withdrawal symptom. Alcoholism: Clinical and Experimental Research, 42(6), 1073-1083.

Stevens, A. K., Blanchard, B. E., & Littlefield, A. K. (2018). Examining approval and social norms as proximal predictors of the impulsivity-cannabis use relation. Cannabis,1, 44-60.

Stevens, A. K., Blanchard, B. E., & Littlefield, A. K. (2018). Impulsive dispositions and alcohol: what we know, how we know it, and where to go from here. Borderline Personality Disorder and Emotion Dysregulation, 5, 4.

Stevens, A. K., Blanchard, B. E., Shi, M., & Littlefield, A. K. (2018). Testing measurement invariance of the UPPS-P Impulsive Behavior Scale in Hispanic/Latino and non-Hispanic/Latino college students. Psychological Assessment, 30, 280-285.

Van Allen, J., Littlefield, A. K., & Schmidt, A. T. (2018). Developing a science of training in health service psychology: Contextual factors and recommendations for improvement. Training and Education in Professional Psychology, 12, 262-268.

Van Horn, S. A., Morgan, R. D., Brusman-Lovins, L., Littlefield, A. K., Hunter, J. T., Gigax, G., & Ridley, K. (2018). Changing lives and changing outcomes: “What works” in an intervention for justice-involved persons with mental illness. Psychological Services, 16, 693-700.

2017

Bagge, C. L., Littlefield, A. K., & Glenn, C. R. (2017). Trajectories of affective response as warning signs for suicide attempts: An examination of the 48 hours prior to a recent suicide attempt. Clinical Psychological Science, 5, 259-271. https://doi.org/10.1177/2167702616681628.

Bailey, D. & Littlefield, A. K. (2017). Does reading cause later intelligence? Accounting for stability in models of change. Child Development, 88, 1913-1921. https://doi.org/10.1111/cdev.12669.

Blanchard, B. E., Stevens, A. K., Littlefield, A. K.*, Talley, A. E., & Brown, J. L. (2017). Examining the link between nonmedical use of sedatives, tranquilizers, and pain relievers with dispositions toward impulsivity among college students. Addictive Behaviors, 69, 8-13. https://doi.org/10.1016/j.addbeh.2017.01.003.

Littlefield, A. K., Brown, J. L., DiClemente, R. J., Safonova, P., Sales, J. M., Rose, E. S., Belyakov, N., & Rassokhin, V. V. (2017). Phosphatidylethanol (PEth) as a biomarker of alcohol consumption in HIV-infected young Russian women: Comparison to self-report assessments of alcohol use. AIDS and Behavior, 21, 1938-1949. https://doi.org/10.1007/s10461-017-1769-7

Mitchell, S. M., Brown, S. L., Roush, J. F., Bolaños, A. D., Littlefield, A. K., Marshall, A. J., Jahn, D.R., Morgan, R.D., & Cukrowicz, K. C. (2017). The clinical application of suicide risk assessment: A theory‐driven approach. Clinical Psychology & Psychotherapy, 24, 1406–1420. https://doi.org/10.1002/cpp.2086

Stevens, A. K., Littlefield, A. K., Talley, A. E., & Brown, J. L. (2017). Do individuals higher in impulsivity drink more impulsively? A pilot study. Addictive Behaviors, 65, 147-153. https://doi.org/10.1016/j.addbeh.2016.10.026

Van Allen, J., Noser, A. E., Littlefield, A. K., Seegan, P. L., Clements, M., & Patton, S. R. (2017). Measuring self-efficacy in the context of pediatric diabetes management: Psychometric properties of the Self-Efficacy for Diabetes Scale. Journal of Pediatric Psychology. https://doi.org/10.1093/jpepsy/jsx094

2016

Brown, J. L., Talley, A. E., Littlefield, A. K., & Gause, N. K. (2016). Young women's alcohol expectancies for sexual risk-taking mediate the link between sexual enhancement motives and condomless sex when drinking. Journal of Behavioral Medicine, 39, 925-930.

Coffey, S.F., Schumacher, J. A., Nosen, E., Littlefield, A. K., Henslee, A., Lappen, A., & Stasiewicz, P. R. (2016). Trauma-focused exposure therapy for chronic posttraumatic stress disorder in alcohol and drug dependent patients: A randomized clinical trial. Psychology of Addictive Behaviors, 30, 778-790.

Haeny, A.M., Littlfield, A.K., & Sher, K. J. (2016). Limitations of lifetime alcohol use disorder assessments: A criterion-validation study. Addictive Behaviors, 59, 95-99.

Littlefield, A. K., Stevens, A. K., Ellingson, J. M., King, K. M., & Jackson, K. M. (2016). Changes in negative urgency, positive urgency, and sensation seeking across adolescence. Personality and Individual Differences, 90, 332-337.

Stevens, A. K., Littlefield, A. K., Blanchard, B. E., Talley, A. E., & Brown, J. L. (2016). Does drinking refusal self-efficacy mediate the impulsivity-problematic alcohol use relation? Addictive Behaviors, 53, 181-186.

2015

Hamilton, K. R., Littlefield, A. K., Anastasio, N. C., Cunningham, K. A., Wing, V. C., Mathias, C. W., Lane, S. D., Schutz, C., Swann, A. C., Lejuez, C. W., Clark, L., Moeller, F. G., Potenza, M. N. (2015). Rapid-response impulsivity: definitions, measurement issues, and clinical implications. Personality Disorders: Theory, Research, and Treatment, 6, 168-181.

Hamilton, K. R., Mitchell, M. R., Wing, V. C., Balodis, I. M., Bickel, W., Fillmore, M., Lane, S. D., Lejuez, C. W., Littlefield, A. K., Luijten, M., Mathias, C. W., Mitchell, S. H., Napier, T. C., Reynolds, B., Schütz, C. G., Setlow, B., Sher, K. J., Swann, A. C., Tedford, S. E., White, Winstanley, C., Yi, R., Potenza, M. N., & Moeller, F. G. (2015). Choice impulsivity: Definitions, measurement issues, and clinical implications. Personality Disorders: Theory, Research, and Treatment, 6, 182-198.

Littlefield, A. K., Gottlieb, J. C., Cohen, L. M., & Trotter, D. R. (2015). Electronic cigarette use among college students: Linked to gender, race/ethnicity, smoking, and heavy drinking, Journal of American College Health, 63, 523-9.

Littlefield, A. K., Stevens, A. K., Cunningham, S., Jones, R. E., King, K. M., Schumacher, J. A., & Coffey, S. F. (2015). Stability and change in multi-method measures of impulsivity across residential addictions treatment. Addictive Behaviors, 42, 126-129.

2014

Bagge, C. L., Littlefield, A. K., Conner, K. R., Schumacher, J. A., & Lee, H. J. (2014). Near-term predictors of the intensity of suicidal ideation: An examination of the 24 hours prior to a recent suicide attempt. Journal of Affective Disorders, 165, 53-58.

Bailey, D. H., Watts, T. W., Littlefield, A.K., Geary, D. C. (2014). State and trait effects on individual differences in children's mathematical development. Psychological Science, 25, 2017-26.

Cyders, M. A., Littlefield, A. K., Coffey, S., & Karyardi, K. A. (2014). Examination of a short English version of the UPPS-P Impulsive Behavior Scale. Addictive Behaviors, 39, 1372-1376.

Haeny, A. M., Littlefield, A. K., Sher, K. J. (2014). False negatives in the assessment of lifetime alcohol use disorders: A serious but unappreciated problem. Journal of Studies on Alcohol and Drugs, 75, 530-535.

Haeny, A. M., Littlefield, A. K., & Sher, K. J. (2014). Repeated diagnoses of lifetime alcohol use disorders in a prospective study: Insights into the extent and nature of the reliability and validity problem. Alcoholism: Clinical and Experimental Research, 38, 489-500.

Littlefield, A. K., & Alquist, J. L. (2014). Greater clarity with consilience: Testing causal models across methodological approaches. European Journal of Personality, 28, 394-395.

Littlefield, A. K., Stevens, A. K., & Sher, K. J. (2014). Impulsivity and alcohol involvement: Multiple, distinct constructs and processes. Current Addiction Reports, 1, 33-40.

Nosen, E., Littlefield, A. K., Schumacher, J.A., Stasiewicz, P.R., & Coffey, S.F. (2014). Treatment of co-occurring PTSD-AUD: Effects of exposure-based and non-trauma focused psychotherapy on alcohol and trauma cue-reactivity. Behavior Research and Therapy, 61, 35-42.

Talley, A. E., Brown, J. L., Stevens, A. K., & Littlefield A. K. (2014). Does sexual self-concept ambiguity moderate relations among perceived peer norms for alcohol use, alcohol-dependence symptomatology, and HIV risk-taking behavior? Journal of Studies on Alcohol and Drugs, 75, 1023-31.

Talley, A. E. & Littlefield, A. K. (2014). Pathways between concealable stigmatized identities and substance misuse. Social and Personality Psychology Compass, 8, 569-582.

2013

Ellingson, J.M., Verges, A., Littlefield, A.K., Martin, N.G., & Slutske, W.S. (2013). Are bottom-up and top-down processes in dual-process models of personality genetically distinct? Behavior Genetics, 43, 480-490.

Bagge, C.L., Littlefield, A. K., & Lee, H.J. (2013). Correlates of proximal premeditation among recently hospitalized suicide attempters. Journal of Affective Disorders, 150, 559-564.

Cadigan, J.M., Littlefield, A.K., Martens, M.P., & Sher, K.J. (2013). Transitions into and out of intercollegiate athletic involvement and risky drinking. Journal of Studies on Alcohol and Drugs, 74, 21-29.

Littlefield, A.K., Bagge. C.L., Rosellini, A.J., & Coffey, S.F. (2013). Relations among behavioral and questionnaire measures of impulsivity in a sample of suicide attempters. Suicide and Life-Threatening Behavior, 43, 460-467.

Littlefield, A. K., Vergés, A., Rosinski, J. M., Steinley, D., & Sher, K. J. (2013). Motivational typologies of drinkers: Do enhancement and coping drinkers form two distinct groups? Addiction, 108, 497-503.

2012

Agrawal, A., Nelson, E.C., Littlefield, A.K., Bucholz, K.K., Degenhardt, L., Henders, A.K., Madden, P.A.F., Martin, N.G., Montgomery, G.W., Pergadia, M.L., Sher, K.J., Heath, A.C., & Lynskey, M.T. (2012). Cannabinoid receptor (CNR1) genotype moderates the effects of childhood physical abuse on anhedonia and depression. Archives of General Psychiatry, 69, 732-740.

Bailey, D. H., Littlefield, A. K., & Geary, D. C. (2012). The co-development of skill and preference for use of retrieval-based processes for solving addition problems: Individual and sex differences from first to sixth grade. Journal of Experimental Child Psychology, 113, 78-92.

Littlefield, A. K., Talley, A. E., & Jackson, K. M. (2012). Coping motives, negative moods, and time-to-drink: Exploring alternative analytic models of coping motives as a moderator of daily mood-drinking covariation. Addictive Behaviors, 37, 1371-1376.

Littlefield, A.K., & Sher, K.J. (2012). Smoking desistance and personality change in emerging and young adulthood. Nicotine & Tobacco Research, 14, 338-342.

Littlefield, A.K., Vergés, A., Wood, P.K. & Sher, K.J. (2012). Transactional models between personality and alcohol involvement: A further examination. Journal of Abnormal Psychology, 121, 778-783.

Talley, A.E., Sher, K.J., Steinley, D., Wood, P.K., & Littlefield, A.K. (2012). Patterns of alcohol use and consequences among empirically derived sexual minority subgroups. Journal of Studies on Alcohol and Drugs, 73, 290-302.

Winograd, R.P., Littlefield, A.K., Martinez, J., & Sher, K.J. (2012). The drunken self: The Five-Factor model as an organizational framework for characterizing perceptions of one's own drunkeness. Alcoholism: Clinical and Experimental Research, 36, 1787-1793.

Winograd, R., Littlefield, A. K., & Sher, K. J. (2012). Do people who “Mature Out” of drinking see themselves as more mature? Alcoholism: Clinical and Experimental Research, 36, 1212-1218.

2011

Agrawal, A., Lynskey, M. T., Todorov, A. A., Schrage, A., J., Littlefield, A. K., Grant, J. D., Zhu, Q., Nelson, E. C., Madden, P. A. F., Bucholz, K. K., Sher, K. J., Heath, A. C. (2011). A candidate gene association study of alcohol consumption in young women. Alcohol: Clinical and Experimental Research, 35, 550-558.

Kristjansson, S. D., Agrawal, A., Littlefield, A. K., Pergadia, M. L., Lessov-Schlagger, C. N., Sartor, C. E., Bucholz, K. K., Madden, P. A. F., Cooper, L. M. Sher, K. J., Heath, A. C. (2011). Drinking motives in female smokers: Factor structure, alcohol dependence, and genetic influences. Alcoholism: Clinical and Experimental Research, 35, 345-354.

Littlefield, A. K., Agrawal, A., Ellingson, J., Kristjansson, S., Madden, P. A. F., Bucholz, K. K., Slutske, W. S., Heath, A. C., & Sher, K. J. (2011). Does variance in drinking motives explain the genetic overlap between personality and alcohol use disorder symptoms? A twin study of young women. Alcoholism: Clinical and Experimental Research, 35, 2242-2250.

Littlefield, A. K., Vergés, A., McCarthy, D. M., & Sher, K. J. (2011). Interactions between explicit alcohol expectancies and cognitive functioning in the prediction of alcohol use and associated problems: A further examination. Psychology of Addictive Behaviors, 25, 542-546.

Martens, M. P., Martin, J. L., Littlefield, A. K., Murphy, J. G., & Cimini, M. D. (2011). Changes in protective behavioral strategies and alcohol use among college students. Drug and Alcohol Dependence, 118, 504-502.

Talley, A., Tomko, R., Littlefield, A. K., Sher, K., & Trull, T. (2011). The influence of general identity disturbance on reports of substance use disorders and related outcomes among sexual minority adults with a history of substance use. Psychology of Addictive Behaviors, 25, 530-541.

Vergés, A., Littlefield, A. K., & Sher, K. J. (2011). Did Lifetime Rates of Alcohol Use Disorders Increase by 67% in Ten Years? A Comparison of NLAES and NESARC. Journal of Abnormal Psychology, 120, 868-877.

2010

Blonigen, D. M., Littlefield, A. K., Hicks, B., & Sher, K. J. (2010). Course of antisocial behavior during emerging adulthood: Developmental differences in personality. Journal of Research in Personality, 44, 729-733.

Littlefield, A. K., & Sher, K. J. (2010). The multiple, distinct ways that personality contributes to alcohol use disorders. Social and Personality Psychology Compass, 4, 767-782.

Littlefield, A. K., Sher, K. J., & Verges, A. (2010). Three (or more) alcohol dependence symptoms but not clustered in the same 12 months: Diagnostic orphans from a longitudinal perspective. Journal of Studies on Drugs and Alcohol, 71, 864-869.

Littlefield, A. K., Sher, K. J., & Wood, P. K. (2010). A personality-based description of maturing out of alcohol problems: Extension with a Five-Factor Model and robustness to modeling challenges. Addictive Behaviors, 35, 948-954.

Littlefield, A. K., Sher, K. J., & Steinley, D. (2010). Developmental trajectories of impulsivity and their association with alcohol use and related outcomes during emerging and young adulthood I. Alcoholism: Clinical and Experimental Research, 34, 1409-1416.

Littlefield, A. K., Sher, K. J., & Wood, P. K. (2010). Do changes in drinking motives mediate the relation between personality change and the “maturing out” of alcohol problems? Journal of Abnormal Psychology, 119, 93-105.

Talley, A. E., Sher, K. J., & Littlefield, A. K. (2010). Sexual orientation and substance use trajectories in emerging adulthood. Addiction, 105, 1235-1245.

2009

Agrawal, A., Grant, J., Littlefield, A. K., Waldron, M., Pergadia, M. L., Lynskey, M. T., Madden, P. A. F., Todorov, A., Trull, T., Bucholz, K. K., Todd, R. D., Sher, K., Heath, A. C. (2009). Developing a quantitative measure of alcohol consumption for genomic studies on prospective cohorts. Journal of Studies on Alcohol and Drugs, 70, 157-168.

Geary, D. C., Bailey, D. H., Littlefield, A. K., Wood, P. K., Hoard, M. K., & Nugent, L. (2009). First-grade predictors of mathematical learning disability: A latent class trajectory analysis. Cognitive Development, 4, 411-429.

Littlefield, A. K., Sher, K. J., & Wood, P. K. (2009). Is “maturing out” of problematic alcohol involvement related to personality change? Journal of Abnormal Psychology, 118, 360-374.