• Spring 2007, Spring 2009: Co-Instructor for graduate course: Latent Class and Latent Transition Analysis. The Pennsylvania State University, Department of Human Development and Family Studies.
• Spring 2001: Teaching assistant for undergraduate course: Empirical Inquiry in Human Development. The Pennsylvania State University, Department of Human Development and Family Studies.
• Fall 2000: Teaching assistant for graduate course: Strategies for Data Analysis in Developmental Research. The Pennsylvania State University, Department of Human Development and Family Studies.
• Fall 1998 - Fall 2001: Teaching assistant for graduate course: Measurement in Human Development. The Pennsylvania State University, Department of Human Development and Family Studies.

• 2009-present: Editorial Board member, Prevention Science
• 2008: Recipient, Society for Prevention Research ECPN Early Career Award
• 2008: Board Member, Penn State Graduate School Alumni Society
• 2008: Ad-hoc Member, NIH Cutting-Edge Basic Research Awards (CEBRA) Review Council
• 2005-2007: Ad-hoc Member, NIH Community Influences on Health Behavior (CIHB) Study Section Review Panel
• 2001-2002: Kligman pre-doctoral fellow

Collins, L. M., & Lanza, S. T., (in press). Latent class and latent transition analysis for the social, behavioral, and health sciences. New York: Wiley.

BeLue, R., Lanza, S. T., & Figaro, M. K. (in press). Lifestyle therapy changes and hypercholesterolemia: Identifying risk groups in a community sample of blacks and whites. Ethnicity and Disease.

Cleveland, M. J., Collins, L. M., Lanza, S. T., Greenberg, M. T., & Feinberg, M. E. (in press). Does individual risk moderate the effect of contextual-level protective factors? A latent class analysis of substance use. Journal of Prevention and Intervention in the Community.

Lanza, S. T., Savage, J., & Birch, L. (in press). Identification and prediction of latent classes of weight loss strategies among women. Obesity.

Chung, H., Lanza, S. T., & Loken, E. (2008). Latent transition analysis: Inference and estimation. Statistics in Medicine, 27, 1834-1854.

Goodman, W. B., Crouter, A. C., Lanza, S. T., Cox, M. J., & The Family Life Project Key Investigators (2008). Paternal work characteristics and father-infant interaction quality in low-income, rural families. Journal of Marriage and Family, 70, 640-653.

Lanza, S. T., & Collins, L. M. (2008). A new SAS procedure for latent transition analysis: Transitions in dating and sexual risk behavior. Developmental Psychology, 44(2), 446-456.

Lanza, S. T., Collins, L. M., Lemmon, D. R., & Schafer, J. L. (2007). PROC LCA: A SAS procedure for latent class analysis. Structural Equation Modeling, 14(4), 671-694.

Maldonado-Molina, M. M., Collins, L. M., Lanza, S. T., Prado, G., Ramirez, R. R., & Canino, G. (2007). Patterns of substance use onset among Hispanics in Puerto Rico and the United States. Addictive Behaviors, 32(10), 2432-2437.

Lanza, S. T., & Collins, L. M. (2006). A mixture model of discontinuous development in heavy drinking from ages 18 to 30: The role of college enrollment. Journal of Studies on Alcohol, 67, 552-561.

Ridenour, T.A., Lanza, S.T., Donny, E.C., & Clark, D.B. (2006). Different lengths of times for progressions in adolescent substance involvement. Addictive Behaviors, 31, 962-983.

Crouter, A. C., Lanza, S. T., Pirretti, A., Goodman, W. B., Neebe, E., & The Family Life Project Key Investigators. (2006). The O*Net jobs classification system: A primer for family researchers. Family Relations, 55, 461-472.

Lanza, S. T., Collins, L. M., Schafer, J. L., & Flaherty, B. P. (2005). Using Data Augmentation to Obtain Standard Errors and Conduct Hypothesis Tests in Latent Class and Latent Transition Analysis. Psychological Methods, 10, 84-100.

Chung, H., Park, Y., & Lanza, S. T. (2005). Latent transition analysis with covariates: Pubertal timing and substance use behaviours in adolescent females. Statistics in Medicine, 24, 2895-2910.

NICHD Early Child Care Research Network (2005). Predicting individual differences in attention, memory and planning in first graders from experiences at home, child care, and school. Developmental Psychology, 41, 99-114.

Lanza, S. T., Donny, E., Collins, L. M., & Balster, R. (2004). Analyzing the Acquisition of Drug Self-Administration using Growth Curve Models. Drug and Alcohol Dependence, 75, 11-21.

Donny, E., Lanza, S. T., Balster, R., Collins, L. M., Caggiula, A., & Rowell, P. P. (2004). Using Growth Models to Relate Acquisition of Nicotine Self-Administration to Break Point and Nicotine Receptor Binding. Drug and Alcohol Dependence, 75, 23-35.

NICHD Early Child Care Research Network (2004). Father’s and mother’s parenting behavior and beliefs as predictors of children’s social adjustment in the transition to school. Journal of Family Psychology, 18, 628-638.

Lanza, S. T., & Collins, L. M. (2002). Pubertal timing and the stages of substance use in females during early adolescence. Prevention Science, 3, 69-82.

Jacobs, J. E., Lanza, S. T., Osgood, D. W., Eccles, J. S., and Wigfield, A. (2002). Changes in children’s self-competence and values: Gender and domain differences across grades one through twelve. Child Development, 73, 509-527.

Lanza, S. T., & Collins, L. M. (in press). Modeling multidimensional sexual risk behavior using latent class analysis. In F. Columbus (Ed.), Sexual Risk Behaviors. Hauppauge, NY: Nova Science Publishers Inc.

Lanza, S. T., Flaherty, B. P., & Collins, L. M. (2003). Latent class and latent transition analysis. In J. A. Schinka, & W. F. Velicer (Eds.), Handbook of Psychology: Vol. 2. Research Methods in Psychology. Hoboken, NJ: Wiley, pp. 663-685.

Hyatt (Lanza), S. L., & Collins, L. M. (2000). Using Latent Transition Analysis to examine the relationship between parental permissiveness and the onset of substance use. In J. Rose, L. Chassin, C. Presson, & S. J. Sherman (Eds.), Multivariate Applications in Substance Use Research: New Methods for New Questions. Hillsdale, NJ: Erlbaum, pp. 259-288.

Collins, L. M., Hyatt (Lanza), S. L., & Graham, J. W. (2000). LTA as a way of testing models of stage-sequential change in longitudinal data. In T. D. Little, K. U. Schnabel, & J. Baumert (Eds.), Modeling longitudinal and multiple-group data: Practical issues, applied approaches, and specific examples. Hillsdale, NJ: Erlbaum, pp. 147-161.

Lanza, S. T., Lemmon, D. R., Schafer, J. L., & Collins, L. M. (2008). PROC LCA & PROC LTA User’s Guide Version 1.1.5 beta. University Park: The Methodology Center, Penn State.

Lemmon, D. R., & Lanza, S. T. (2008). PROC LCA & PROC LTA Version 1.1.5 beta. Written in Fortran and SAS Toolkit. Available at http://methodology.psu.edu.

Collins, L.M., Lanza, S. T., Schafer, J. L., & Flaherty, B. P. (2004). WinLTA 3.1. Written in Visual Basic and Fortran. Available at http://methodology.psu.edu .

Collins, L. M., Lanza, S. T., Schafer, J. L., & Flaherty, B. P. (2002). WinLTA User’s Guide Version 3.0. University Park: The Methodology Center, Penn State.

Collins, L. M., Lanza, S. T., & Schafer, J. L. (2002). WinLTA User’s Guide for Data Augmentation. University Park: The Methodology Center, Penn State.

Collins, L. M., & Lanza, S. T. (2009, June). Latent class and latent transition analysis. Presented at the Summer Institute on Longitudinal Methods, The Pennsylvania State University, University Park, PA.

Lanza, S. T. (2008, December). Data sharing requirements: The analyst’s perspective. Presented at the NIDA Crossroads: Sharing Social Environment and Genetic Data Meeting, Bethesda, MD.

Collins, L. M., Lanza, S. T., & Bray, B. C. (2008, September). Masterclass: Latent class analysis for cross-sectional and longitudinal data. Presented at the Department of Mathematics and Statistics Postgraduate Statistics Centre of Lancaster University and the Economic and Social Research Council National Centre for Research Methods: Lancaster, United Kingdom.

Lanza, S. T. (2008, July). Methodological/Statistical Issues in Grant Proposal Development. Presented at the NIH Addiction Research Training Institute: Leadership Development Workshop, Atlanta, GA.

Lanza, S. T. (2008, July). Modeling sexual risk behavior as a categorical latent variable. Presented at the NIDA Sexual Acquisition and Transmission of HIV Cooperative Agreement program (SATH-CAP) Analytic Workgroup Meeting, Bethesda, MD.

Lanza, S. T. (2008, June). Secondary data analysis. Panel member at the Society for Prevention Research annual meeting, San Francisco, CA.

Lanza, S. T., & Rhoades, B. (2008, March). Modeling multiple risks for child development: Variable-oriented and person-oriented approaches. Presented at the joint Prevention and Methodology Centers seminar, The Pennsylvania State University, University Park, PA.

Maldonado-Molina, M. M., & Lanza, S. T. (2008, March). Latent transition analysis: Patterns of drug use among adolescents. Presented at the Addictive & Health Behaviors Research Institute, Jacksonville, FL.

Lanza, S. T. (2007, November). Latent transition analysis for modeling change over time: A demonstration of SAS PROC LTA. Presented at the American Public Health Association conference, Washington, D.C.

Collins, L. M., & Lanza, S. T. (2007, February). Latent class analysis for cross-sectional and longitudinal data. Workshop presented at the 36th ZA Spring Seminar. The University of Cologne, Germany.

Lanza, S. T. (2006, October). An introduction to latent class analysis and several extensions. Presented at the Quantitative Social Sciences Initiative seminar series, The Pennsylvania State University, University Park, PA.

Lanza, S. T. (2006, August). Latent transition analysis: Modeling stage-sequential development. Workshop presented at the Center for Advancing Longitudinal Drug Abuse Research, Summer Institute on Longitudinal Research, University of California, Los Angeles, CA.

Collins, L. M., & Lanza, S. T. (2006, June). Introduction to latent class and latent transition analysis. Presented at the Institute on Developmental Science, State College, PA.

Lanza, S. T. (2006, May). Latent transition analysis for modeling discrete change in longitudinal data. Workshop presented at the Center for Advancing Longitudinal Drug Abuse Research, University of California, Los Angeles, CA.

Lanza, S. T. (2006, April). Latent class and latent transition analysis for substance use research. Workshop presented at the Oregon Research Institute, Eugene, OR.

Lanza, S. T. (2005, October). Multilevel modeling with HLM. Workshop presented at the National Recreation and Park Association conference, San Antonio, TX.

Lanza, S. T. (2005, June). Modeling drug-taking behavior in rats: Mixed models in application. Workshop presented at the College on Problems of Drug Dependence conference, Orlando, FL.

Lanza, S. T. (2004, June). An HLM workshop. Workshop presented at the APA Advanced Training Institute on the Study of Early Child Care Data, Chapel Hill, NC. Also presented August, 2003 at the APA Advanced Training Institute on the Study of Early Child Care Data, Chapel Hill, NC.