Andrew Lac, Ph.D.

Andrew Lac, Ph.D.

Andrew Lac, Ph.D.

Assistant Professor
COLU 4049
Tuesday: 12:05pm-1:05pm & Thursday: 11:15am-12:15pm

Professional Summary

Prof. Andrew Lac joined the UCCS Psychology Department in 2015.  Previously, he was affiliated with Claremont Graduate University as research faculty and Loyola Marymount University as visiting faculty.

Dr. Lac’s research focuses on the psychology of substance use and addictive behaviors. His topics of interest include alcohol, marijuana, other substances (almost anything that could be ingested or inhaled), sexual activity, pornography, internet compulsions, and other addictive behaviors. These topics are examined from various perspectives, including attitudes and beliefs, motivations and expectations, feelings and emotions, risk factors, protective factors, prevention, brief interventions, peer norms, family practices and history, attachment and dyadic relationships (e.g., best friends, parent-child, siblings, twins), racial disparities, behavioral genetics, and the role of social media.  Furthermore, he publishes on scale development and validation applied to these domains.  


  • Ph.D. Psychology, Claremont Graduate University
  • M.A. Psychology, California State University, Los Angeles
  • B.S. Cognitive Science, and Computing Specialization, University of California, Los Angeles

Areas of Interest

Substance Use, Addictive Behaviors, Close Relationships, Health Psychology, Psychometrics, Scale Development and Validation

Prof. Lac is open to recruiting new graduate students interested in conducting research in any of these areas to join his research lab. 


  • PSY 5810 - Research Statistics and Methods I
  • PSY 5820 - Research Statistics and Methods II
  • PSY 5830 - Applied Multivariate Techniques I
  • PSY 6813 - Meta-Analysis

Professional Experience

Dr. Lac has served as statistical consultant for various institutions, including Harvard University, Loyola Marymount University, and University of Southern California. He is coauthor of research methods textbook aimed at graduate students (authorship rotated): Crano, W. D., Brewer, M. & Lac, A. (2015).  Principles and Methods of Social Research (3rd ed.). New York: Routledge. Chapters span from experimental designs to structural equation modeling to meta-analysis. He coauthored a Handbook of Psychology chapter that reviews the history of research methods in the social and behavioral sciences.

Representative Publications

*Student coauthor

  • Lac, A., & Luk, J. W. (2019). Pathways from positive, negative, and specific alcohol expectancies to weekday and weekend drinking to alcohol problems. Prevention Science, 20, 800-809.
  • Lac, A., & *Donaldson, C. D.  (2019).  Personality traits moderate connections from drinking attitudes to alcohol use and myopic relief, self-inflation, and excess. Substance Use & Misuse, 54, 818-830.
  • Lac, A., & Luk, J. W. (2019). Development and validation of the Adult Interpersonal Acceptance-Rejection Scale. Psychological Assessment, 31, 340-351.
  • Lac, A., & Luk, J. (2018) Testing the amotivational syndrome: Marijuana use longitudinally predicts lower self-efficacy even after controlling for demographics, personality, and alcohol and cigarette use. Prevention Science, 19, 117-126
  • Lac, A., & *Donaldson, C. D. (2018). Validation and psychometric properties of the Alcohol Positive and Negative Affect Scale: Are drinking emotions distinct from general emotions? Psychology of Addictive Behaviors, 32, 40-51.
  • Lac, A., & *Donaldson, C. D. (2018).  Testing competing models of injunctive and descriptive norms for proximal and distal reference groups on alcohol attitudes and behavior. Addictive Behaviors, 78, 153-159.
  • Lac, A., & *Brack, N.  (2018). Alcohol expectancies longitudinally predict drinking and the alcohol myopic effects of relief, self-inflation, and excess. Addictive Behaviors, 77, 172-179.
  • Lac, A., & *Donaldson, C. D. (2017). Comparing the predictive validity of the four-factor and five-factor (bifactor) measurement structures of the Drinking Motives Questionnaire, Drug & Alcohol Dependence, 181, 108-115.
  • *Christodoulou, J., Lac, A., & Moore, D. (2017). Babies and math: A meta-analysis of infants’ simple arithmetic competence. Developmental Psychology, 58, 1405-1417.
  • Lac, A., & *Donaldson, C. D. (2017). Higher-order and bifactor models of the drinking motives questionnaire: Examining competing structures using confirmatory factor analysis. Assessment, 24, 222-231.
  • *Donaldson, C. D., *Handren, L. M., & Lac, A. (2017). Applying multilevel modeling to understand individual and cross-cultural variations in attitudes toward homosexual people across 28 European countries. Journal of Cross-Cultural Psychology, 48, 93-112.
  • Lac, A., *Handren, L., & Crano, W. D. (2016). Conceptualizing and measuring weekend versus weekday alcohol use: Item response theory and confirmatory factor analysis. Prevention Science, 17, 872-881.
  • Lac, A. & *Donaldson, C. D. (2016). Alcohol attitudes, norms, behavior, and personality traits longitudinally classify nondrinkers, moderate drinkers, and binge drinkers using discriminant function analysis. Addictive Behaviors, 61, 91-98.
  • Lac, A., & Crano, W. D. (2016). Marijuana use. In R. J. R. Levesque (Ed.), Encyclopedia of adolescence (2nd ed., pp. 1-8). Switzerland: Springer International.
  • Lac, A. (2016). Measurement validity. In R. J. R. Levesque (Ed.), Encyclopedia of adolescence (2nd ed., pp. 1-4). Switzerland: Springer International.
  • Lac, A. (2016). Content analysis. In R. J. R. Levesque (Ed.), Encyclopedia of adolescence (2nd ed., pp. 1-5). Switzerland: Springer International.
  • Crano, W. D., Brewer, M. & Lac, A. (2015).  Principles and Methods of Social Research (3rd ed.). New York: Routledge.
  • Kenney, S. R., Lac, A., Hummer, J., & LaBrie, J. W. (2014). Development and validation of the Hookup Motives Questionnaire. Psychological Assessment, 26, 1127-1137.
  • Lac, A. (2014). A primer for using meta-analysis to consolidate research.  Substance Use & Misuse. 49, 1064-1068. 
  • Napper, L. E., Hummer, J. F. Lac, A., & LaBrie, J. W.  (2014). What are other parents saying? Perceived parental communication norms and the relationship between alcohol specific parental communication and college student drinking. Psychology of Addictive Behaviors, 28, 31-41.
  • Lac, A., Crano, W. D., Berger, D., & Alvaro, E. M. (2013). Attachment theory and theory of planned behavior: An integrative model predicting underage drinking.  Developmental Psychology, 49, 1579-1590.
  • Lac, A., & Berger, D. (2013). Development and validation of the Alcohol Myopia Scale. Psychological Assessment, 25, 738-747.

A comprehensive list of publications may be downloaded from either site:

Research Awards

  • Alan Marlatt “Early Career Award” (American Psychological Association, Division 50: Addictions)
  • Peter M. Bentler “Multivariate Award” (Western Psychological Association)
  • Robert L. Solso “Research Award” (Western Psychological Association)