Adams, J., & Foster, E. M. (2002). District size and state educational costs: Should consolidation follow school finance reform? Journal of Education Finance, 27(3), 833-855.

Almirall, D. (2004, November). Structural Nested Mean Models for Assessing Time-varying Effect Moderation. Paper presented at the Graduate Student Seminar Series, Department of Statistics, University of Michigan, Ann Arbor, MI.

Almirall, D. (2005, October). Why Study Time-varying Effect Moderation? Paper presented at the Quantitative Methodology Program, Institute for Social Research, University of Michigan, Ann Arbor, MI.

Almirall, D. (2006, August). Structural nested mean models for assessing time-varying effect moderation, Joint Statistical Meetings. Seattle, WA.

Almirall, D. (2006, March). Structural nested mean models for assessing time-varying effect moderation. Paper presented at the International Biometric Society’s Eastern North American Region Subdivision Spring Meetings, Tampa, FL.

Almirall, D. (2006, May). Structural nested mean models for assessing time-varying effect moderation. Paper presented at the Durham VA Medical Center, Health Services Research & Development Department, Durham, NC.

Almirall, D. (2006, November). Causal effect moderation with application to level of care matching for adolescent substance abuse treatment. Paper presented at the Graduate Student Seminal Series, Department of Statistics, Univeristy of Michigan, Ann Arbor, MI.

Auerbach, K., Collins, L., Aseltine, R., & Colton, M. E. (2004, March). Latent transition analysis of college status differences in the development of drinking and binge drinking behavior, Society for Research on Adolescence biannual meeting. Baltimore, MD.

Auerbach, K., Collins, L., Gore, S., Aseltine, R., & Colton, M. E. (2004, May). Latent transition analysis of gender differences in the development of drinking behavior during young adulthood, Society for Prevention Research meetings. Quebec City, Quebec, Canada.

Auerbach, K., Collins, L., Gore, S., Aseltine, R., & Colton, M. E. (2005, February). A frequency/quantity/binge drinking model of alcohol use during the transition to adulthood, biannual meeting of the Emerging Adulthood Special Interest Group. Miami, FL.

Auerbach, K. J., & Collins, L. M. (2006). A multidimensional developmental model of alcohol use during emerging adulthood. Journal of Studies on Alcohol, 67, 917-925.

Bacik, J. M. (1997). Missing Response Times in Survival Analysis (No. 97-16). University Park: Pennsylvania State University, The Methodology Center

Bacik, J. M., Murphy, S. A., & Anthony, J. A. (1998). Drug use prevention data, missing assessments and survival analysis. Multivariate Behavioral Research, 33(4), 573-588.

Bacik, J. M., Murphy, S. A., & Anthony, J. C. (1997, June). Missing response times in survival analysis, Society for Prevention Research meetings. Baltimore, MD.

Barber, J. S., Murphy, S. A., Axinn, W. G., & Maples, J. J. (2000). Discrete time multilevel survival analysis. Sociological Methodology, 30(1), 201-235.

Barber, J. S., Murphy, S. A., & Verbitsky, N. (2004). Adjusting for time-varying confounding in survival analysis. Sociological Methodology, 34(1), 163-192.

Belin, T. R., Diffendal, G. D., Mack, S., Rubin, D. B., & Schafer, J. L. (1993). Hierarchical logistic regression models for imputation of unresolved enumeration status in undercount estimation. Journal of the American Statistical Association, 88, 1149-1166.

Bernaards, C. A., Belin, T. R., & Schafer, J. L. (in press). Robustness of a multivariate normal approximation for imputation of incomplete binary data. Statistics in Medicine.

Bierman, K. L., Coie, J. D., Dodge, K. A., Foster, E. M., Greenberg, M. T., Lochman, J. E., et al. (2004). The effects of the Fast Track Program on serious problem outcomes at the end of elementary school. Journal of Clinical Child and Adolescent Psychology, 33(4), 650.

Bierman, K. L., Kam, C., & Conduct Problems Prevention Research Group (2003). Identifying at risk children at school entry: The usefulness of multibehavioral problem profiles. Journal of Clinical Child and Adolescent Psychology, 32(3), 396-407.

Bierman, K. L., Nix, R. L., Maples, J. J., Murphy, S. A., & Conduct Problems Prevention Research Group (2006). Examining the use of clinical judgment in the context of an adaptive intervention design: The Fast Track prevention program Journal of Consulting & Clinical Psychology, 74, 468-481.

Blatt, D., Murphy, S. A., & Zhu, J. (2004). A-Learning for Approximate Planning (No. 04-63). University Park: Pennsylvania State University, The Methodology Center

Bogart, L. M., Pinkerton, S. D., Cecil, H., Myaskovsky, L., & Wagstaff, D. A. (1999). The meaning of Asex. Journal of the American Medical Association, 282(20), 1917-1918.

Boker, S. M., & Graham, J. W. (1998). A dynamic systems analysis of adolescent substance abuse. Multivariate Behavioral Research, 33(4), 479-507.

Brannan, A. M., Heflinger, C. A., & Foster, E. M. (2003). The role of caregiver strain and other family characteristics in predicting children's use of mental health services. Journal of Emotional and Behavioral Disorders, 11(2), 77-91.

Bray, B., Almirall, D., Zimmerman, R., Lynam, D., & Murphy, S. A. (2006). Assessing the total effect of time-varying predictors in prevention research. Prevention Science, 7(1), 1-17.

Bray, B., Lanza, S. T., & Collins, L. M. (2007, May). Modeling the longitudinal relation between adolescent drinking and smoking behavior, Society for Prevention Research Conference. Washington, D.C.

Bray, B., Zimmerman, R., Lynam, D., & Murphy, S. (2003, June). Assessing the total effect of time-varying predictors in the prevention research, Society for Prevention Research meetings. Washington, D.C.

Bray, B. C. (2005). Modeling the Development of Substance Use and Delinquency Simultaneously: An Associative Latent Transition Analysis Example (No. 05-72). University Park: Pennsylvania State University, The Methodology Center

Bray, B. C. (2006, February). Rambling, gambling Willie: What Bob Dylan left out about pathological gambling. Paper presented at the Centre County Correctional Facility, Bellefonte, PA.

Bray, B. C., & Collins, L. M. (2005, December). Using latent class analysis to examine the structure of gambling behavior. Paper presented at the National Center for Responsible Gaming 6th Annual Conference: “Finding Common Ground on Prevention, Treatment, and Policy”.

Bray, B. C., & Collins, L. M. (2005, February). Modeling the development of substance use and delinquency simultaneously: An associative latent transition analysis example. Paper presented at the Methodology Center, the Pennsylvania State University University Park, PA.

Bray, B. C., & Collins, L. M. (2005, May). The relation between the waxing and waning of adolescent substance use and delinquency. Paper presented at the 13th Annual Conference of Society for Prevention Research.

Bray, B. C., & Collins, L. M. (2006, June). The structure of gambling behavior in adulthood. Paper presented at the Society for Prevention Research 14th Annual Conference: “Applying Prevention Science to Reduce Health Disparities", San Antonio, TX.

Bray, B. C., & Ridenour, T. A. (2006, June). Do predictors of late childhood substance use also predict gambling during late childhood?, National Council of Problem Gambling 20th Annual Conference on Prevention, Research, and Treatment of Problem Gambling. St. Paul, MN.

Bray, B. C., Whyte, K., & Collins, L. M. (2005, May ). The methodological state of research on gambling among adolescents. Paper presented at the 13th Annual Conference of Society for Prevention Research.

Bray, B. C., Zimmerman, R. S., Lynam, D., & Murphy, S. (2003, April). Assessing the total effect of time-varying predictors in prevention research, University of Michigan, Dearborn, MI.

Bray, B. C., Zimmerman, R. S., Lynam, D., & Murphy, S. A. (2003). Assessing the Total Effect of Time Varying Predictors in Prevention Research (No. 03-59). University Park: Pennsylvania State University, The Methodology Center

Brunner, R. M., & Schafer, J. L. (1997). Inference for Latent Transition Models (No. 97-11). University Park: Pennsylvania State University, The Methodology Center

Brunner, R. M., Schafer, J. L., & Collins, L. M. (1996, September). Statistical inference for latent transition models. Paper presented at the Social Science and Statistics Conference in Honor of Clifford C. Clogg, University Park, PA.

Cai, J., Fan, J., Li, R., & Zhou, H. (2005). Variable selection for multivariate failure time data. Biometrika, 92(2), 303-316.

Caldwell, L. L., Baldwin, C., Walls, T. A., & Smith, E. (2004a). Preliminary effects of a leisure education program to promote healthy use of free time among middle school adolescents. Journal of Leisure Research, 36(3), 310-335.

Caldwell, L. L., Baldwin, C., Walls, T. A., & Smith, E. (2004b). Proximal effects of a leisure education program for adolescents. Journal of Leisure Research(36(3)).

Cecil, H., Bogart, L. M., Wagstaff, D. A., Pinkerton, S. D., & Abramson, P. R. (2002). Classifying a person as a sexual partner: The impact of contextual factors. Psychology and Health, 17(2), 221-234.

Chakraborty, B., Collins, L. M., Murphy, S. A., Nair, V. N., & Strecher, V. J. (2005). A comparison of randomized trials and the multi-phase optimization strategy for behavioral interventions (No. 429). Ann Arbor: Department of Statistics, University of Michigan

Chakraborty, B., Collins, L. M., Murphy, S. A., Nair, V. N., & Strecher, V. J. (2005, March). Design strategies for behavioral intervention research: A new direction. Paper presented at the Brownbag Seminar, The Methodology Center, Pennsylvania State University, State College, PA.

Chakraborty, B., Collins, L. M., Murphy, S. A., Nair, V. N., & Strecher, V. J. (2005, March). Some statistical issues in designing behavioral interventions. Paper presented at the Student Seminar, Department of Statistics, Pennsylvania State University, University Park, PA.

Chakraborty, B., Collins, L. M., Murphy, S. A., Nair, V. N., & Strecher, V. J. (2006, March). The Multi-phase Optimization Strategy: A new way to develop multi-component interventions. Paper presented at the International Biometric Society's Eastern North American Region (ENAR) Spring Meetings, Tampa, Florida.

Chakraborty, B., Collins, L. M., Murphy, S. A., Nair, V. N., & Strecher, V. J. (2007, March). The Multi-phase Optimization Strategy: A novel way to develop multi-component behavioral interventions. Paper presented at the International Biometric Society's Eastern North American Region (ENAR) Spring Meetings, Atlanta, Georgia.

Chung, H. (2003). Latent-Class Modeling with Covariates (No. 03-56). University Park: Pennsylvania State University, The Methodology Center

Chung, H., Flaherty, B. P., & Schafer, J. L. (2004). Latent-Class Models with Concomitant Variables: Application to Marijuana Use and Attitudes among High-School Seniors (No. 04-62). University Park: Pennsylvania State University, The Methodology Center

Chung, H., Flaherty, B. P., & Schafer, J. L. (2005). Latent-Class Logistic Regression: Application to Marijuana Use and Attitudes Among High School Seniors (No. 05-64). University Park: Pennsylvania State University, The Methodology Center

Chung, H., Flaherty, B. P., & Schafer, J. L. (2006). Latent class logistic regression: application to marijuana use and attitudes among high school seniors. Journal of the Royal Statistical Society, Series A, 169(Part 4), 723-743.

Chung, H., Lanza, S. T., & Loken, E. (2007, May). Latent transition analysis: Inference and estimation, Latent Transition Analysis: Inference and Estimation. Washington, D.C.

Chung, H., Loken, E., & Schafer, J. L. (2001). Difficulties in Drawing Inferences with Finite-Mixture Models: A Simple Example and a Simple Solution (No. 01-50). University Park: Pennsylvania State University, The Methodology Center

Chung, H., Loken, E., & Schafer, J. L. (2004). Difficulties in drawing inferences with finite-mixture models: A simple example and a simple solution. The American Statistician, 58(2), 152-158.

Chung, H., Park, Y., & Lanza, S. T. (2005). Latent transition analysis with covariates: Pubertal timing and substance use behaviors in adolescent females. Statistics in Medicine, 24(18), 2895-2910.

Chung, H., & Schafer, J. L. (2000, June). Describing substance use by a concomitant-variable latent-class model, Society for Prevention Research meetings. Montreal, Quebec, Canada.

Chung, H., & Schafer, J. L. (2001, August). A simple cure for mode-switching in finite mixtures, Joint Statistical meetings. Atlanta, GA.

Chung, H., & Schafer, J. L. (2001, June). A simple method for handling mode-switching in MCMC for latent-class models, Society for Prevention Research meetings. Washington, DC.

Chung, H., & Schafer, J. L. (2002, August). Latent-class modeling with covariates. Paper presented at the Joint Statistical meetings, New York, NY.

Chung, H., & Schafer, J. L. (2002, June). Latent-class modeling with covariates. Paper presented at the Society for Prevention Research meetings, Seattle, WA.

Chung, H., & Schafer, J. L. (2003, August). Comparing the performance of maximum-likelihood and Bayesian methods for latent-class models with covariates. Paper presented at the Joint Statistical meetings, San Francisco, CA.

Chung, H., Walls, T., & Park, Y. (in press). A latent transition model with logistic regression. Psychometrika.

Cleveland, M. J. (2006, September). Integrating prevention science and methodology: current and planned research initiatives. Paper presented at the Prevention Research Center Fall Seminar Series, University Park, PA.

Coatsworth, D., Maldonado-Molina, M., Pantin, H., & Szapocznik, J. (2005). A person-centered and ecological investigation of acculturation strategies in Hispanic immigrants. Journal of Community Psychology, 33(2), 157-174.

Coffman, D. L. (2006, April-a). Evaluating fit in structural equation models: Effects of model error, National Institute on Drug Abuse Research Training Institute. Bethesda, MD.

Coffman, D. L. (2006, April-b). Individual Fit Indices for Evaluating Growth Curve Models. Paper presented at the James Madison University, Harrisonburg, VA.

Coffman, D. L. (2006, February). Using Parcels in Structural Equation Models. Paper presented at the The Pennsylvania State University, University Park, PA.

Coffman, D. L. (2006, July). Robustness of the CFI, RNI, and RMSEA point estimates and confidence intervals in covariance structure models. Paper presented at the 25th Biennial Meeting of the Society for Multivariate Analysis in the Behavioural Sciences, Budapest, Hungary.

Coffman, D. L. (2006, June). Consequences of violating the parameter drift assumption in covariance structure models on power analysis procedures and Type I error rates for the test of close fit. Paper presented at the 71st Annual Meeting of the Psychometric Society, Montreal, Canada.

Coffman, D. L. (2006, May). Why do high school seniors drink? Implications for a targeted approach. Paper presented at the 14th Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Coffman, D. L., & Millsap, R. E. (2006). Evaluating latent growth curve models using individual fit statistics. Structural Equation Modeling, 13(1), 1-27.

Colder, C. R., Lloyd-Richardson, E. E., Flaherty, B. P., Hedeker, D., Segawa, E., Flay, B. R., et al. (2006). The natural history of college smoking: Trajectories of daily smoking during the freshman year. Addictive Behaviors, 31, 2212-2222.

Collins, L., Hyatt, L. S. L., & Graham, J. W. (1997, June). LTA as a way of testing models of stage-sequential development in longitudinal data. Paper presented at the Practical Approaches to Longitudinal and Multi-Group Data, Max Plank Institute for Human Development, Berlin, Germany.

Collins, L., Hyatt, L. S. L., & Graham, J. W. (1998, February-a). Perceived parental permissiveness as a risk factor for substance use onset: An example of Latent Transition Analysis. Paper presented at the Institute for Social Research, University of Michigan, Ann Arbor, MI.

Collins, L., Hyatt, L. S. L., & Graham, J. W. (1998, February-b). Perceived parental permissiveness as a risk factor for substance use onset: An example of Latent Transition Analysis. Paper presented at the Population Research Institute, Pennsylvania State University, University Park, PA.

Collins, L. M. (1996a). Is reliability obsolete? A commentary on Are simple gain scores obsolete? Applied Psychological Measurement, 20, 289-294.

Collins, L. M. (1996b). Measurement of change in research on aging: Old and new issues from an individual growth perspective. In J. E. Birren & K. W. Schaie (Eds.), Handbook of the psychology of aging, Fourth edition. San Diego, CA: Academic Press.

Collins, L. M. (1996c). Research design and methods. In J. E. Birren (Ed.), Encyclopedia of gerontology: Age, aging, and the aged. San Diego, CA: Academic Press.

Collins, L. M. (1996d). Review of The Analysis of Change. Applied Psychological Measurement, 20, 299-302.

Collins, L. M. (1996, August). Latent transition analysis: Modeling stage-sequential development. Paper presented at the XIVth Biennial Meetings of the International Society for the Study of Behavioral Development, Quebec City, Canada.

Collins, L. M. (1996, June). Methodological considerations in longitudinal research. Paper presented at the Annual Meetings of the Society for Prevention Research, San Juan, Puerto Rico.

Collins, L. M. (1996, May-a). Building program strength and accountability through research. Paper presented at the Forging New Prevention Partnerships for Youth and Families, Metropolitan Washington Council of Governments, National Press Club, Washington, DC.

Collins, L. M. (1996, May-b). Latent transition analysis and its applications in developmental research. Paper presented at the University of Kansas, Lawrence, KS.

Collins, L. M. (1996, May-c). Latent transition analysis and its applications in prevention research. Paper presented at the Prevention Methodology Conference, Phoenix, AZ.

Collins, L. M. (1997, December). Using Latent Transition Analysis to estimate and test stage-sequential models of development. Paper presented at the University of Wisconsin, Madison, WI.

Collins, L. M. (1997, June). Effective measurement methods and data analytic techniques for assessing change over time. Paper presented at the Prevention Research Working Group Lunch Time Conversation Series, National Institute on Drug Abuse, Rockville, MD.

Collins, L. M. (1997, May). New developments in the LTA software. Paper presented at the Annual Meetings of the Society for Prevention Research, Baltimore, MD.

Collins, L. M. (1997, October-a). A demonstration of WinLTA. Paper presented at the Annual Meetings of the Society for Multivariate Experimental Psychology, Scottsdale, AZ.

Collins, L. M. (1997, October-b). Research-based prevention programming. Paper presented at the Understanding Drug Abuse and Addiction: A Community Town Meeting, Philadelphia, PA.

Collins, L. M. (1998). Innovative methods for prevention research [Special Issue]. Multivariate Behavioral Research, 33(4).

Collins, L. M. (1998, April). Latent transition analysis. Paper presented at the Centers for Disease Control, Atlanta, GA.

Collins, L. M. (1998, February). A practical introduction to using Latent Transition Analysis in developmental research. Paper presented at the Biennial Meetings of the Society for Research on Adolescence, San Diego, CA.

Collins, L. M. (1998, June). Using latent transition analysis to examine the gateway hypothesis. Paper presented at the Stages and Pathways of Involvement in Drug Use: Examining the Gateway Hypothesis, Los Angeles, CA.

Collins, L. M. (1998, May-a). An introduction to latent transition analysis with WINLTA. Paper presented at the Summer Institute on Logitudinal Methods, The Pennsylvania State University, University Park, PA.

Collins, L. M. (1998, May-b). Using latent transition analysis in developmental work. Paper presented at the Developmental Science Institute, Chapel Hill, NC.

Collins, L. M. (1998, October). Measurement reliability for static and dynamic categorical latent variables. Paper presented at the New Methods for the Analysis of Change, State College, PA.

Collins, L. M. (1999, July). Testing latent class and latent transition models with WinLTA. Paper presented at the Psychology Department at Ege University, Izmir, Turkey.

Collins, L. M. (2000, April). A new look at mediation. Paper presented at the Organizational Psychology Colloquium Series, Department of Psychology, Penn State University, University Park, PA.

Collins, L. M. (2000, March). An introduction to latent class and latent transition analysis with WinLTA. Paper presented at the University of Houston, Houston, TX.

Collins, L. M. (2000, November). Important methodological issues in drug abuse research. Paper presented at the Addictions Research Center, University of Pennsylvania.

Collins, L. M. (2001). Measurement reliability for static and dynamic categorical latent variables. In L. Collins & A. G. Sayer (Eds.), New methods for the analysis of change (pp. 273-288). Washington, DC: American Psychological Association.

Collins, L. M. (2001, April). Important methodological issues in biomedical research. Paper presented at the School of Social Work Trainees’ Seminar, University of Washington.

Collins, L. M. (2001, August-a). Latent Transition Analysis. Paper presented at the Department of Psychology, Pontificia Universidad Católica de Chile.

Collins, L. M. (2001, August-b). Latent Transition Analysis: Some new results using data augmentation. Paper presented at the American Psychological Association Convention, San Francisco, CA.

Collins, L. M. (2001, August-c). Methodological considerations in longitudinal research. Paper presented at the Interamerican Congress of Psychology, Santiago, Chile.

Collins, L. M. (2001, January-a). Important methodological issues in biomedical research. Paper presented at the Psychology Department, University of Miami, Miami, FL.

Collins, L. M. (2001, January-b). Latent transition analysis: Some new results using data augmentation. Paper presented at the Quantitative Methods and Measurement Colloquium Series, University of California, Santa Barbara, CA.

Collins, L. M. (2002). Using latent transition analysis to examine the gateway hypothesis. In D. K. Kandel (Ed.), Stages and pathways of drug involvement: Examining the gateway hypothesis (pp. 254-269). Cambridge, MA: Cambridge University Press.

Collins, L. M. (2002, October-a). Latent Transition Analysis: Some new results using data augmentation. Paper presented at the RAND Corporation, Santa Monica, CA.

Collins, L. M. (2002, October-b). Two-sequence Latent Transition Analysis. Paper presented at the Society for Multivariate Experimental Psychology Meetings, Charlottesville, VA.

Collins, L. M. (2003, June-a). Latent Transition Analysis for analyzing stage development. Paper presented at the Annual Developmental Sciences Institute, Uppsala, Sweden.

Collins, L. M. (2003, June-b). Latent transition analysis with WinLTA. Paper presented at the Department of Psychology, University of Ulster, Belfast, Northern Ireland.

Collins, L. M. (2004, December). Methodological considerations in longitudinal behavioral research. Paper presented at the EXPORT conference, University of Puerto Rico, San Juan, PR.

Collins, L. M. (2004, June). The Multiphase Optimization Strategy (MOST). Paper presented at the University of Puerto Rico Medical School, San Juan, PR.

Collins, L. M. (2004, November). The Multiphase Optimization Strategy (MOST) for drug abuse prevention and treatment research. Paper presented at the National Development and Research Institute, New York, NY.

Collins, L. M. (2005, April-a). Introduction to Latent Transition Analysis (LTA). Paper presented at the Case Western Reserve University, Cleveland, OH.

Collins, L. M. (2005, April-b). The Multiphase Optimization Strategy (MOST) for development and evaluation of behavioral interventions. Paper presented at the University of Michigan, Ann Arbor, MI.

Collins, L. M. (2005, August). Introduction to methodological research at Penn State. Paper presented at the University of the Western Cape, Cape Town, South Africa.

Collins, L. M. (2005, December). The Multiphase Optimization Strategy (MOST) for optimizing and evaluating behavioral interventions. Paper presented at the School of Public Health, University of North Carolina, Chapel Hill, NC.

Collins, L. M. (2005, February-a). The Multiphase Optimization Strategy (MOST). Paper presented at the Rutgers University, New Brunswick, NJ.

Collins, L. M. (2005, February-b). The Multiphase Optimization Strategy (MOST). Paper presented at the University of Pennsylvania, Philadelphia, PA.

Collins, L. M. (2005, June-a). Developing and evaluating behavioral interventions using MOST. Paper presented at the Annual Meetings of the College on Problems of Drug Dependence, Orlando, FL.

Collins, L. M. (2005, June-b). eIntervention Science: Looking inside the black box with the Multiphase Optimization Strategy (MOST). Paper presented at the Critical Issues in eHealth Conference, Bethesda, MD.

Collins, L. M. (2005, November). Methodological research in an interdisciplinary context. Paper presented at the University of South Carolina, Columbia, SC.

Collins, L. M. (2005, October). The Multiphase Optimization Strategy (MOST): An extension of randomized clinical trials. Paper presented at the Statistics Department Colloquium Series, Penn State, University Park, PA.

Collins, L. M. (2006). Analysis of longitudinal data: The integration of theoretical model, temporal design and statistical model. Annual Review of Psychology, 57, 505-528.

Collins, L. M. (2006, August-a). Analysis of longitudinal data: The integration of theoretical model, temporal design, and statistical model. Paper presented at the CALDAR Summer Institute, Los Angeles, CA.

Collins, L. M. (2006, August-b). Overview of methodological challenges in prevention and treatment research. Paper presented at the Office of Behavioral and Social Science Research Methodology and Technology Summit, Bethesda, MD.

Collins, L. M. (2006, December-a). An empirical framework for increasing the effectiveness of evidence-based behavioral interventions. Paper presented at the Asia Pacific Evidence-Based Medicine Conference, Hong Kong.

Collins, L. M. (2006, December-b). The Multiphase Optimization Strategy for empirical intervention development. Paper presented at the Department of Psychology, University of Hong Kong, Hong Kong.

Collins, L. M. (2006, June-a). Introduction to latent class and latent transition analysis. Paper presented at the Institute on Developmental Science, State College, PA.

Collins, L. M. (2006, June-b). The Multiphase Optimization Strategy for building and evaluating adaptive interventions. Paper presented at the New Clinical Drug Evaluation Unit (NCDEU) Meeting, Boca Raton, FL.

Collins, L. M. (2006, March). The Multiphase Optimization Strategy for building, optimizing, and evaluating behavioral interventions. Paper presented at the Joint Meeting on Adolescent Treatment Effectiveness, Baltimore, MD.

Collins, L. M. (2006, May). Fractional factorial designs for intervention research. Paper presented at the Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Collins, L. M. (2006, October-a). A multi-phase approach for building, optimizing, and evaluating behavioral interventions. Paper presented at the Department of Public Health, Oregon State University, Corvallis, OR.

Collins, L. M. (2006, October-b). The Multiphase Optimization Strategy for empirical development of behavioral interventions. Paper presented at the Department of Biobehavioral Health, Penn State University, University Park, PA.

Collins, L. M. (2006, September). The Multiphase Optimization Strategy for building and evaluating behavioral interventions. Paper presented at the Center for Injury Research and Prevention, Children’s Hospital, University of Pennsylvania, Philadelphia, PA.

Collins, L. M., Fidler, P. L., & Wugalter, S. E. (1996). Some practical issues related to the estimation of latent class and latent transition parameters. In Categorical variables in developmental research: Methods of analysis (pp. 133-146): Academic Press.

Collins, L. M., & Flaherty, B. P. (1997, April). Using Latent Transition Analysis to analyze data from prevention trials. Paper presented at the Design and Analysis of Prevention Trials for the Future, Johns Hopkins University School of Hygiene and Public Health, Baltimore, MD.

Collins, L. M., & Flaherty, B. P. (2002). Latent class models for longitudinal data. In A. L. McCutcheon & J. A. Hagenaars (Eds.), Applied latent class analysis (pp. 287-303). Cambridge, MA: Cambridge University Press.

Collins, L. M., & Flaherty, B. P. (2003). Methodological considerations in prevention research. In Z. Sloboda & W. Bukoski (Eds.), Handbook for drug abuse prevention theory, science, and practice (pp. 557-573). New York:, NY: Plenum Press.

Collins, L. M., Flaherty, B. P., & Colby, S. M. (2002). Measurement and design issues in tobacco and drug use research [Special Issue]. Drug and Alcohol Dependence, 68(Supplement 1).

Collins, L. M., Flaherty, B. P., & Tang, Z. (2002, August). Two-sequence latent transition models. Paper presented at the Joint Statistical meetings, New York, NY.

Collins, L. M., Flaherty, B. P., & Tang, Z. (2004, July). Associative latent transition analysis (ALTA). Paper presented at the biennial meetings of the Society of Multivariate Analysis in the Behavioral Sciences, Jena, Germany.

Collins, L. M., Flaherty, B. P., & Tang, Z. (2004, July). Associative latent transition analysis (ALTA) models: Assessing the relation between two longitudinal stage sequences. Paper presented at the Society for Multivariate Analysis in the Behavioral Sciences, Jena, Germany.

Collins, L. M., & Graham, J. W. (2002). The effect of the timing and temporal spacing of observations on statistical results in longitudinal studies. Drug and Alcohol Dependence, 68(Supplement 1), S85-S96.

Collins, L. M., Graham, J. W., & Flaherty, B. P. (1997, September). Mediation as intra-individual change. Paper presented at the 6th European Conference on Assessment, Lisbon, Portugal.

Collins, L. M., Graham, J. W., & Flaherty, B. P. (1998). An alternative framework for defining mediation. Multivariate Behavioral Research, 33(2), 295-312.

Collins, L. M., Graham, J. W., & Flaherty, B. R. (1996, November ). Using Latent Transition Analysis to assess mediation: Back to basics. Paper presented at the Thurstone Laboratory of Quantitative Psychology, University of North Carolina, Chapel Hill.

Collins, L. M., Graham, J. W., & Flaherty, B. R. (1996, October). Using Latent Transition Analysis to assess mediation: Back to basics. Paper presented at the Annual Meetings of the Society of Multivariate Experimental Psychology, Evanston, IL.

Collins, L. M., Graham, J. W., & Flaherty, B. R. (1997, February). Using Latent Transition Analysis to assess mediation: Back to basics. Paper presented at the Department of Psychology, New York University, New York, NY.

Collins, L. M., Graham, J. W., & Flaherty, B. R. (1997, September). Mediation as intra-individual change. Paper presented at the 6th European Conference on Assessment, Lisbon, Portugal.

Collins, L. M., Graham, J. W., & Rousculp, S. S. (1997, March). An introduction to Latent Transition Analysis. Paper presented at the Department of Biostatistics, Yale University, New Haven, CT.

Collins, L. M., Graham, J. W., Rousculp, S. S., & Hansen, W. B. (1995). Does Caffeine Play a Role in Very Early Substance Use Onset? An Illustration of Latent Transition Analysis (No. 95-3). University Park: Pennsylvania State University, The Methodology Center

Collins, L. M., Graham, J. W., Rousculp, S. S., & Hansen, W. B. (1997). Heavy caffeine use and the beginning of the substance use onset process: An illustration of latent transition analysis. In K. Bryant, M. Windle & S. West (Eds.), The science of prevention: Methodological advances from alcohol and substance abuse research (pp. 79-99). Washington, D.C.: American Psychological Association.

Collins, L. M., Hyatt, L. S. L., & Flaherty, B. P. (1999, October). Latent Transition Analysis: A method for estimating and testing stage-sequential models in longitudinal contingency tables. Paper presented at the Measuring Change in Complex Social Systems: Best Practices and State-of-the-Art Developments for Measuring Change in Organizations, College Park, MD.

Collins, L. M., Hyatt, L. S. L., Flaherty, B. P., Schafer, J., & Hames, K. (1999, June). A demonstration of WinLTA 2.0. Paper presented at the Annual Meetings of the Society for Prevention Research, New Orleans, LA.

Collins, L. M., Hyatt, S. L., & Flaherty, B. P. (1999, October). Latent transition analysis: A method for estimating and testing stage-sequential models in longitudinal contingency tables. Paper presented at the Measuring Change in Complex Social Systems: Best Practices and State-of-the-Art Development for Measuring Change in Organizations, College Park, MD.

Collins, L. M., Hyatt, S. L., Flaherty, B. P., Schafer, J. L., & Hames, K. (1999, June). A demonstration of WinLTA 2.0. Paper presented at the Society for Prevention Research meetings, New Orleans, LA.

Collins, L. M., Hyatt, S. L., & Graham, J. W. (1997, July-a). LTA as a way of testing models of stage-sequential development in longitudinal data. Paper presented at the University of Jena, Jena, Germany.

Collins, L. M., Hyatt, S. L., & Graham, J. W. (1997, July-b). LTA as a way of testing models of stage-sequential development in longitudinal data. Paper presented at the Conference on Developmental Methods, University of Nuremberg, Nuremberg, Germany.

Collins, L. M., Hyatt, S. L., & Graham, J. W. (1997, June). LTA as a way of testing models of stage-sequential development in longitudinal data. Paper presented at the Practical Approaches to Longitudinal and Multi-Group Data, Max Plank Institute for Human Development, Berlin, Germany.

Collins, L. M., Hyatt, S. L., & Graham, J. W. (1998, February-a). Perceived parental permissiveness as a risk factor for substance use onset: An example of Latent Transition Analysis. Paper presented at the Institute for Social Research, Ann Arbor, MI.

Collins, L. M., Hyatt, S. L., & Graham, J. W. (1998, February-b). Perceived parental permissiveness as a risk factor for substance use onset: An example of Latent Transition Analysis. Paper presented at the Population Research Institute, University Park, PA.

Collins, L. M., Hyatt, 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 (pp. 147-161). Hillsdale, NJ: Erlbaum.

Collins, L. M., & Maldonado-Molina, M. M. (2001, August). The gateway hypothesis of substance use. Paper presented at the Interamerican Society of Psychology Conference, Santiago, Chile.

Collins, L. M., Murphy, S. A., & Bierman, K. (2004). A conceptual framework for adaptive preventive interventions. Prevention Science, 5(3), 185-196.

Collins, L. M., Murphy, S. A., & Bierman, K. A. (2001). Design and Evaluation of Adaptive Preventive Interventions (No. 01-49). University Park: Pennsylvania State University, The Methodology Center

Collins, L. M., Murphy, S. A., & Nair, V. (2003, June). Sequential experimentation: Some ideas from engineering useful in prevention science. Paper presented at the Annual Meetings of the Society for Prevention Research, Washington, DC.

Collins, L. M., Murphy, S. A., Nair, V., & Strecher, V. (2005). A strategy for optimizing and evaluating behavioral interventions. Annals of Behavioral Medicine, 30(1), 65-73.

Collins, L. M., Murphy, S. A., & Nair, V. N. (2004, February). Using sequential experimentation to develop multi-component interventions. Paper presented at the Prevention Research Center Colloquium Series, Penn State University, University Park, PA.

Collins, L. M., Murphy, S. A., & Strecher, V. (2007). The Multiphase Optimization Strategy (MOST) and the Sequential Multiple Assignment Randomized Trial (SMART): New methods for more potent e-health interventions American Journal of Preventive Medicine, 32, s112-s118.

Collins, L. M., & Sayer, A. G. (2000a). Growth and change in social psychology research: Design, measurement, and analysis. In H. T. Reis & C. M. Judd (Eds.), Handbook of research methods in social psychology. Cambridge, MA: Cambridge University Press.

Collins, L. M., & Sayer, A. G. (2000b). Modeling growth and change processes: Design, measurement, and analysis for research in social psychology. In H. T. Reis & C. M. Judd (Eds.), Handbook of research methods in social psychology (pp. 478-495). Cambridge, MA: Cambridge University Press.

Collins, L. M., & Sayer, A. G. (Eds.). (2001). New methods for the analysis of change. Washington: American Psychological Association.

Collins, L. M., Schafer, J., Hyatt, L. S. L., & Flaherty, B. P. (1999, July). Using data augmentation in latent class models for longitudinal data: Estimation, standard errors and hypothesis tests involving combinations of parameters. Paper presented at the European Meetings of the Psychometric Society, Lueneberg, Germany.

Collins, L. M., Schafer, J. L., Graham, J. W., & Kam, C.-M. (2000, July). A comparison of FIML and MI approaches to missing data: Why bother with multiple imputation? Paper presented at the Biennial Meetings of the Society for Multivariate Applications in the Behavioral Sciences, London, England.

Collins, L. M., Schafer, J. L., Hyatt, L. S. L., & Flaherty, B. P. (2000, July). A demonstration of WinLTA. Paper presented at the Biennial meetings of the Society for Multivariate Applications in the Behavioral Sciences, London, England.

Collins, L. M., Schafer, J. L., Hyatt, S. L., & Flaherty, B. P. (1999, July). Using data augmentation in latent class models for longitudinal data: Estimation standard errors and hypothesis tests involving combinations of parameters. Paper presented at the European Meetings of the Psychometric Society, Lunenburg, Germany.

Collins, L. M., Schafer, J. L., Hyatt, S. L., & Flaherty, B. P. (2000, July). A demonstration of WinLTA. Paper presented at the biennial meetings of the Society for Multivariate Applications in the Behavioral Sciences, London, England.

Collins, L. M., Schafer, J. L., & Kam, C.-M. (2001). A Comparison of Inclusive and Restrictive Strategies in Modern Missing-Data Procedures (No. 01-43). University Park: Pennsylvania State University, The Methodology Center

Collins, L. M., Schafer, J. L., & Kam, C. M. (2001). A comparison of inclusive and restrictive strategies in modern missing-data procedures. Psychological Methods, 6(4), 330-351.

Collins, L. M., Schafer, J. L., Lanza, S., & Flaherty, B. P. (2001, April). Latent transition analysis: Some new results using data augmentation. Paper presented at the Social Work Colloquium Series, University of Washington.

Collins, L. M., Schafer, J. L., Lanza, S. T., & Flaherty, B. P. (2001, January). Latent transition analysis: Some new results using data augmentation. Paper presented at the Quantitative Methods and Measurement Colloquium Series, University of California, Santa Barbara, CA.

Collins, L. M., & Shanahan, M. J. (1996, January). Methodological issues in family-based prevention research. Paper presented at the National Institute on Drug Abuse Meetings on Family-Based Prevention, Gaithersburg, MD.

Collins, L. M., & Shanahan, M. J. (1998). Family-based prevention in developmental perspective: Design, measurement, and analytic issues. In K. E. Etz, E. B. Robertson & R. S. Ashery (Eds.), Drug abuse prevention through family intervention: National Institute on Drug Abuse Research Monograph 177.

Collins, L. M., Tang, Z., & Flaherty, B. P. (2002, August). Two-sequence Latent Transition Models. Paper presented at the Joint Statistical Meetings, New York, NY.

Collins, L. M., Tang, Z., & Flaherty, B. P. (2002, October). Two-sequence latent transition models. Paper presented at the Society of Multivariate Experimental Psychology, Charlottesville, VA.

Collins, L. M., & Tracy, A. J. (1997). Estimation in complex latent transition models with extreme data sparseness. Kwantitatieve Methoden, 55, 57-71.

Conduct Problems Prevention Research Group (in press). Impact of the Fast Track preventive intervention on the development of conduct problem behavior across the elementary school years. Journal of Clinical Child and Adolescent Psychology.

Cumsille, P., Darling, N., & Flaherty, B. P. (2006). Chilean adolescents' beliefs about the legitimacy of parental authority: Individual and age-related differences. International Journal of Behavioral Development, 30, 97-106.

Cumsille, P., Graham, J., & Taylor, B. (1999, June). Program evaluation of school-based substance use intervention using multilevel growth curve modeling with latent variables, Society for Prevention Research meetings. New Orleans, LA.

Cumsille, P., & Sayer, A. (1997, May). Longitudinal invariance of positive alcohol expectancies in adolescence, Society for Prevention Research meetings. Baltimore, MD.

Cumsille, P., & Sayer, A. (1998, June). Describing and predicting growth in positive alcohol expectancies from early to middle adolescence, Society for Prevention Research meetings. Park City, UT.

Cumsille, P., & Sayer, A. (1998, March). Growth in positive alcohol expectancies from early to middle adolescence, Society for Research on Adolescence meetings San Diego, CA.

Cumsille, P., & Sayer, A. (1998, October). A comparison of first- and second-order latent growth modeling of alcohol expectancies in adolescence. Paper presented at the New Methods for the Analysis of Change Conference, University Park, PA.

Cumsille, P., & Sayer, A. G. (1997). The Structure of Alcohol Expectancies. Part 1: Item Analysis and Exploratory Factor Analysis (No. 97-15). University Park: Pennsylvania State University, The Methodology Center

Cumsille, P., & Sayer, A. G. (1998). Modeling Change in Adolescent Alcohol Expectancies with Discontinuous Growth Functions under Conditions of Imputed Data (No. 98-23). University Park: Pennsylvania State University, The Methodology Center

Cumsille, P. E., Sayer, A. G., & Graham, J. W. (2000). Perceived exposure to peer and adult drinking as predictors of growth in positive alcohol expectancies during adolescence. Journal of Consulting and Clinical Psychology, 68(3), 531-536.

Cumsille, P. V. A. (1999, April). Trajectories of alcohol use and positive alcohol expectancies from early to middle adolescence: A cross-domain analysis. Paper presented at the Society for Research on Child Development, Albuquerque, NM.

Davey, A., Shanahan, M. J., & Schafer, J. L. (2001). Correcting for selective nonresponse in the National Longitudinal Survey of Youth using multiple imputation. Journal of Human Resources, 36(3), 500-519.

Davis, M., & Foster, E. M. (2005). Parental preferences and the mental health of children: Structural estimation analysis. International Economic Review, 46 837-866.

Davis, P. E., Doub, T. W., & Jones, D. E. (1995). The effects of the Developmentally Appropriate Curriculum on behavioral problems in Head Start and non-Head Start children, Conference for the Society for Research in Child Development. Indianapolis, IN.

Demirtas, H. (2003). Multiple Imputation for Nonignorable Dropout using Bayesian Pattern-Mixture Models (No. 03-58). University Park: Pennsylvania State University, The Methodology Center

Demirtas, H., & Schafer, J. L. (2002). On the Performance of Random-Coefficient Pattern-Mixture Models for Nonignorable Droput (No. 02-51). University Park: Pennsylvania State University, The Methodology Center

Demirtas, H., & Schafer, J. L. (2003). On the performance of random-coefficient pattern-mixture models for nonignorable nonresponse. Statistics in Medicine, 22(16), 2553-2575.

Dieker, L., Lloyd-Richardson, E., Stolar, M., Flay, B., Tiffany, S., Collins, L. M., et al. (2006). The proximal association between smoking and alcohol use among first year college students. Drug and Alcohol Dependence, 81, 1-9.

Dierker, L., Stolar, M., Richardson, E., Tiffany, S., Flay, B., Collins, L. M., et al. (2007). Tobacco, Alcohol and Marijuana Use among First Year U.S. College Students: A time series analysis Substance Use and Misuse.

Dolan, C. V., & Molenaar, P. C. M. (1996). MINILIS Version 1.2--A FORTRAN 77 Program for Multi-Group Structural Equation Modelling with normal theory Maximum Likelihood Estimation of Parameters Subject to Linear, Non-linear and Simple Bound Constraints (No. 96-4). University Park: Pennsylvania State University, The Methodology Center

Donny, E. C., Lanza, S. T., Balster, R. L., Collins, L. M., Caggiula, A., & Rowell, P. (2004). Using growth models to relate acquisition of nicotine self-administration to break point and nicotine receptor binding. Drug and Alcohol Dependence, 75(1), 23-35.

Donny, E. C., Lanza, S. T., Balster, R. L., Collins, L. M., Caggiula, A. R., & Rowell, P. (2003, June). Using growth models to relate acquisition of nicotine self-administration to break point and nicotinic receptor binding, College on Problems of Drug Dependence. Bal Harbor, FL.

Dorius, C. J., Crouter, A. C., Lanza, S. T., & Vernon-Feagans, L. (2006, November). Maternal stimulation in low-income rural families: Does self-direction at work matter? Paper presented at the National Council on Family Relations Conference, Minneapolis, MN.

Dziak, J. J. (2006). Penalized quadratic inference functions for variable selection in longitudinal research. Unpublished master's thesis, The Pennsylvania State University, University Park.

Dziak, J. J. (2006, August). Penalized Generalized Estimating Equations for Variable Selection with Longitudinal Data. Paper presented at the American Statistical Association Joint Statistical Meetings, Seattle, WA.

Dziak, J. J. (2006, July). Penalized Generalized Estimating Equations for Variable Selection with Longitudinal Data. Paper presented at the Institute of Mathematical Statistics Conference, Rio de Janeiro, Brazil.

Dziak, J. J., & Li, R. (2007). An overview on variable selection for londitudinal data. In D. Hong (Ed.), Quantitative Medical Data Analysis. Singapore: World Sciences Publisher.

Erath, S. A., Bierman, K. L., & Conduct Problems Prevention Research Group (2006). Aggressive marital conflict, maternal harsh punishment, and child aggressive-disruptive behavior: Evidence for direct and indirect relations Journal of Family Psychology, 20, 217-226.

Erdemir, A., Saucerman, J., Lemmon, D., Loppnow, B., Turso, B., Ulbrecht, J., et al. (2005). Local Plantar Pressure Relief in Therapeutic Footwear: Design Guidelines from Finite Element Models. Journal of Biomechanics, 38(9).

Ezatti-Rice, T. M., Johnson, W., Khare, M., Little, R. J. A., Rubin, D. B., & Schafer, J. L. (1995). A stimulation study to evaluate the performance of model-based multiple imputations in HCHS health examination surveys. Proceedings of the Annual Research Conference, 257-266.

Ezatti-Rice, T. M., Khare, M., & Schafer, J. L. (1993). Multiple imputation of missing data in NHANES III. Proceedings of the Annual Research Conference, 459–487.

Fan, J., Huang, T., & Li, R. (2005). Analysis of Longitudinal Data with Semiparametric Estimation of Covariance Function (No. 05-74). University Park: Pennsylvania State University, The Methodology Center

Fan, J., Huang, T., & Li, R. (2007). Analysis of longitudinal data with semiparametric estimation of covariance function. Journal of American Statistical Association, 102(478), 632-641.

Fan, J., Li, G., & Li, R. (2005). An overview on variable selection for survival data analysis. In J. Fan & G. Li (Eds.), Contemporary multivariate analysis and experimental designs (pp. 315-336). Singapore: World Sciences Publishing.

Fan, J., & Li, R. (2002). Variable selection for Cox’s proportional hazard model and frailty model. The Annals of Statistics, 30(1), 74-99.

Fan, J., & Li, R. (2004). New estimation and model selection procedures for semiparametric modeling in longitudinal data analysis. Journal of American Statistical Association, 99(467), 710-723.

Fan, J., & Li, R. (2006a). An overview on nonparametric and semiparametric techniques for longitudinal data. In J. Fan & H. Koul (Eds.), In Frontiers of Statistics (pp. 277-304): Imperial College Press.

Fan, J., & Li, R. (2006b). Statistical challenges with high-dimensionality: Feature selection in knowledge discovery. In M.Sanz-Sol´e, J. Soria, J. L. Varona & J. Verdera (Eds.), International Congress of Mathematicians (Vol. III, pp. 595-622).

Fan, J., & Li, R. (2006, August). Statistical challenges with high dimensionality: Feature extraction in knowledge discovery. Paper presented at the International Mathematician Congress, Madrid, Spain.

Fang, K., Li, R., & Sudjianto, A. (2006). Design and modeling for computer experiments. Boca Raton: Chapman & Hall/CRC.

Feinberg, M., McHale, S., Lanza, S. T., & Crouter, A. C. (2001, April). Sibling and parent relationship trajectories: The search for nonshared environmental processes in the family. Paper presented at the Society for Research on Child Development Conference, Minneapolis, MN.

Flaherty, B. P. (1997, August). Methodological considerations in applying the trait-state distinction to behavior. Paper presented at the Annual Convention of the American Psychological Association, Chicago, IL.

Flaherty, B. P. (1998a). Assessing Stage-Sequential Reciprocal Influence with Latent Transition Analysis (No. 98-20). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P. (1998b). The LTA Data Aggregation Program (No. 98-18). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P. (1998, February). Reciprocal influence in peer relations. Paper presented at the Society for Research on Adolescence, San Diego, CA.

Flaherty, B. P. (2002). Assessing reliability of categorical substance use measures with latent class analysis. Drug and Alcohol Dependence, 68(Supplement 1), S7-S20.

Flaherty, B. P. (2002, May). An expanded latent class analysis of parenting styles. Paper presented at the Fifth International Institute on Developmental Science, University Park, PA.

Flaherty, B. P. (2003). Continuous and Categorical Indicator Latent Class Models (No. 03-57). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P., & Collins, L. M. (1998). Your New LTA Data Generator: Its Care and Use (No. 98-19). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P., & Collins, L. M. (1998, October). Modeling transitions in two sequences simultaneously, New Methods for the Analysis of Change conference. University Park, PA: The Pennsylvania State University.

Flaherty, B. P., & Collins, L. M. (1999). Modeling Transitions in Two Stage-Sequences Simultaneously (No. 99-33). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P., & Collins, L. M. (1999, June). Modeling inter-relations between two stage sequences: The example of psychological distress and substance use onset. Paper presented at the Society for Prevention Research meetings, New Orleans, LA.

Flaherty, B. P., & Collins, L. M. (2003, February). Stability and change in cigarette smoking classes of U.S. adolescents. Paper presented at the annual meeting of the Society for Research on Nicotine and Tobacco, New Orleans, LA.

Flaherty, B. P., Cumsille, P. E., & Sayer, A. G. (1997, May). Structural invariance of parental monitoring, Society for Prevention Research meetings. Baltimore, MD.

Flaherty, B. P., & Giovino, G. A. (2001, January). Using an expanded latent class model to investigate adolescent cigarette smoking. Paper presented at the eighth biennial Center for Disease Control/Agency for Toxic Substances and Disease Registry Symposium on Statistical Methods, Atlanta, GA.

Flaherty, B. P., Graham, J. W., & Collins, L. M. (1996, August). Tracing the process of drug use onset with latent transition analysis. Paper presented at the annual meetings of American Psychological Association, Toronto, Ontario, Canada.

Flaherty, B. P., Graham, J. W., & Collins, L. M. (1998). Assessing Bi-directional Patterns of Influence in Adolescent Early Substance Use Onset with Latent Transition Analysis (No. 98-26). University Park: Pennsylvania State University, The Methodology Center

Flaherty, B. P., Schafer, J. L., & Collins, L. M. (2004, July). Fit assessment and model selection in a mixed indicator latent class model. Paper presented at the Society for Multivariate Analysis in the Behavioral Sciences, Jena, Germany.

Flaherty, B. P., Schafer, J. L., Collins, L. M., & Darling, N. (2000, July). Continuous and categorical indicator latent class models. Paper presented at the International Federation of Classification Societies meetings, Namur, Belgium.

Flaherty, B. P., Schafer, J. L., Collins, L. M., & Darling, N. (2002, August). Latent class models with continuous and categorical indicators. Paper presented at the Joint Statistical meetings, New York, NY.

Flaherty, B. P., & Shiffman, S. (2004, February-a). Correlates of the Nicotine Dependence Syndrome Scale in a representative U.S. sample. Paper presented at the annual meeting of the Society for Research on Nicotine and Tobacco, Scottsdale, AZ.

Flaherty, B. P., & Shiffman, S. (2004, February-b). Factor structure of the Nicotine Dependence Syndrome Scale in the 2001 National Household Survey of Drug Abuse. Paper presented at the annual meeting of the Society for Research on Nicotine and Tobacco, Scottsdale, AZ.

Flay, B. R., & Collins, L. M. (2003, December). School-based risk reduction trials: Some methodological considerations. Paper presented at the Campbell Place Based Briefing Conference, Rockefeller Foundation, New York, NY.

Flay, B. R., & Collins, L. M. (2005). Historical review of school-based randomized trials for eveluating problem behavior prevention programs. Annals of the American Academy of Political and Social Science, 599(1), 115-146.

Foster, E. M. (2000a). Does the continuum of care reduce inpatient length of stay? Evaluation and Program Planning, 23(1), 53-65.

Foster, E. M. (2000b). Is more better than less? An analysis of children's mental health services. Health Services Research, 35(5 - Part II), 1135-1158.

Foster, E. M. (2000, April). Kidtalk at Head Start: What are we learning about language and behavior. Paper presented at the 27th annual National Head Start Association Training conference, Washington, DC.

Foster, E. M. (2000, March-a). Did the Fort Bragg demonstration work? Not whether but for whom. Paper presented at the 13th Annual Research Conference on A system of Care for Children’s Mental Health Expanding the Research Base, Tampa, FL.

Foster, E. M. (2000, March). Parent and teacher assessments of children’s behavior problems. Paper presented at the 33rd annual Gatlinburg Conference on Research and Theory in Mental Retardation and Developmental Disabilities, San Diego, CA.

Foster, E. M. (2000, March-b). Services, expenditures and sustainability in systems for care. Paper presented at the 13th Annual Research Conference on A system of Care for Children’s Mental Health Expanding the Research Base, Tampa, FL.

Foster, E. M. (2000, May-a). Economic analyses and preventive interventions. Paper presented at the Invited participant in methodology workshop at the Society for Prevention Research meetings,