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.

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

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.

Foster, E. M., Jones, D., & Group, Conduct Problems Prevention Research Group(in press). The Economic Analysis of Prevention: An Illustration Involving the Fast Track Project. Journal of Mental Health Policy and Economics.

Foster, E. M., & Kalil, A. (In press). Living arrangements and children’s development in low income Black, White and Latino families. Child Development.

Foster, E. M., Olchowski, A., & Webster-Stratton, C. (in press). Examining the differential cost-effectiveness of behavioral intervention components: An assessment of the Incredible Years Program. Journal of the American Academy of Child and Adolescent Psychiatry.

Foster, E. M., Porter, M., Ayers, T., Kaplan, D., & Sandler, I. (in press). Estimating the Costs of Preventive Interventions. Evaluation Review.

Foster, E. M., Shelton-Johnson, D., & Taylor, T. K. (in press). How and why to measure time costs in the evaluation of parenting interventions. American Journal of Community Psychology.

Foster, E. M., Stephens, R. L., Krivelyova, A., & Gamfi, P. (in press). Can system integration improve mental health outcomes for children and youth? Children and Youth Services Review.

Hillemeier, M. M., Foster, E. M., Heinrichs, B., Heier, B., & Group, Conduct Problems Prevention Research Group(in press). Racial Differences in the Identification of Attention-Deficit/Hyperactivity Disorder. Journal of Developmental and Behavioral Pediatrics.

Kang, J. D. Y., & Schafer, J. L. (in press). Demystifying double robustness: A comparison of alternative strategies for estimating a population mean from incomplete data. Statistical Science.

Lanza, S. T., Collins, L. M., Lemmon, D., & Schafer, J. L. (in press). PROC LCA: A SAS procedure for latent class analysis. Structural Equation Modeling.

Li, R., & Liang, H. (in press). Variable selection in semiparametric regression modeling. Annals of Statistics.

Maydeu-Olivares, A., Coffman, D. L., & Hartman, W. M. (in press). Asymptotically distribution-free interval estimation for coefficient alpha. Psychological Methods.

Mithas, S., Almirall, D., & Krishnan, M. S. (in press). A Framework for Causal Enquiry in Information Systems for Observational Studies. In R. J. Kauffman & P. P. Tallon (Eds.), Economics, Information Systems, and Electronic Commerce Research II: Advanced Empirical Methodologies. Armonk, NY: M.E. Sharpe.

Morris, D., & Foster, E. M. (in press). Parental preferences and the mental health of children: Structural estimation analysis. International Economic Review.

Slough, N., McMahon, R. J., & Group, Conduct Problems Prevention Research Group(in press). Preventing Serious Conduct Problems in School-Age Youth: The Fast Track Program. Cognitive and Behavioral Practice.

Taylor, T. K., Burns, G. L., Rusby, J. C., & Foster, E. M. (in press). Oppositional Defiant Disorder toward Adults and Oppositional Defiant Disorder toward Peers: Initial Evidence for Two Separate Constructs. Psychological Assessment.

Wang, H., Li, R., & Tsai, C. L. (in press). Tuning parameter selectors for SCAD. Biometrika.

Zou, H., & Li, R. (in press). One-step sparse estimates in nonconcave penalized likelihood models (with discussions). Annals of Statistics.

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

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.

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

Jung, H., Schafer, J. L., Ridenour, T. A., & Lanza, S. T. (2007, May). Using latent class variables as predictors, Society for Prevention Research conference. Washington, D.C.

Lemmon, D. R., Bray, B. C., & Chung, H. (2007, May). PROC LTA: Latent Transition Analysis for the SAS System. Paper presented at the 15th Annual Meeting of the Society for Prevention Research, Washington, DC.

Maldonado-Molina, M. M., Prado, G., Lanza, S. T., Collins, L. M., & Canino, G. (2007, May). Hispanic drug use: Patterns of substance use involvement among adolescents, Society for Prevention Research conference. Washington, D.C.

Rhoades, B. L., Lanza, S. T., Nix, R. L., & Greenberg, M. T. (2007, May). Identifying early risk profiles for behavior and academic problems in late childhood: An application of latent class analysis, Society for Prevention Research conference. Washington, D. C.

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.

Goodman, W. B., Crouter, A. C., Lanza, S. T., & Cox, M. J. (2007, March). Paternal work characteristics and the quality of father-infant interactions with low-income, rural families. Paper presented at the Society for Research in Child Development Conference.

Rhoades, B. L., Lanza, S. T., Nix, R. L., & Greenberg, M. T. (2007, March). Profiles of early risk for externalizing problems and social competence in late childhood, Society for Research in Child Development conference. Boston, MA.

Root, T. L., Collins, L. M., Lanza, S., Lemmon, D., & Schafer, J. (2007 May). Latent class analysis for small samples, Annual Meeting of the Society for Prevention Research. Washington, D. C.

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.

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.

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.

Foster, E. M., Jensen, P., Schlander, M., Pelham, W. E., Hechtman, L., Arnold, L. E., et al. (2007). Treatment for ADHD: Is More Complex Treatment Cost-Effective for More Complex Cases? Health Services Research, 42(1 Pt 1), 165-182.

Gunter, L., Zhu, J., & Murphy, S. A. (2007). Variable Selection for Optimal Decision Making. Paper presented at the Proceedings of the 11th Conference on Artificial Intelligence in Medicine.

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

Murphy, S. A., Collins, L. M., & Rush, A. J. (2007). Customizing Treatment to the Patient: Adaptive Treatment Strategies. Drug and Alcohol Dependence, 88(2), s1-s72.

Murphy, S. A., Lynch, K. G., McKay, J. R., Oslin, D., & TenHave, T. (2007). Developing Adaptive Treatment Strategies in Substance Abuse Research. Drug and Alcohol Dependence, 88(2), s24-s30.

Olchowski, A., Foster, E. M., & Webster-Stratton, C. (2007). Implementing Behavioral Intervention Components in a Cost-Effective Manner: Analysis of the Incredible Years Program. Journal of Early and Intensive Behavior Intervention, 3(4), 284-304.

Pelham, W. E., Foster, E. M., & Robb, J. A. (2007). The Economic Impact of Attention Deficit Hyperactivity Disorder in Children and Adolescents. Ambulatory Pediatrics 7, 121-131.

Pineau, J., Bellemare, M. G., Rush, A. J., Ghizaru, A., & Murphy, S. A. (2007). Constructing evidence-based treatment strategies using methods from computer science. Drug and Alcohol Dependence, 88(s2), s52-s60.

Rivera, D. E., Pew, M. D., & Collins, L. M. (2007). Using engineering control principles to inform the design of adaptive interventions. Drug and Alcohol Dependence, 88, s31-s40.

Rusby, J. C., Taylor, T. K., & Foster, E. M. (2007). A descriptive study of school discipline referrals in first grade. Psychology in the Schools, 44, 333-350.

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.

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.

Petrin, R. A. (2006, September). Integrating prevention science and methodology. Paper presented at the Prevention Research Center Seminar Series, University Park, PA.

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.

Lanza, S. T. (2006, October). An introduction to latent class analysis and several extensions. Paper presented at the Ouantitative Social Sciences Initiative Seminar Series, The Pennsylvania State University, University Park, PA.

Petrin, R. A. (2006, October). Analyzing school production. Paper presented at the Methodology Center Seminar Series, University Park, PA.

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.

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.

Li, R. (2006, November). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA.

Li, R. (2006, November). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Department of Health Evaluation Sciences, Penn State University, University Park, PA.

Maldonado-Molina, M. M., Collins, L. M., Lanza, S. T., Ramírez, R., & Canino, G. (2006, November). Patterns of substance use onset among Hispanic adolescents. Paper presented at the Critical Research Issues in Latino Mental Health, Special Topics in Latino Mental Health Research: Robert Wood Johnson Medical School, Santa Fe, New Mexico.

Murphy, S. A., Oslin, D., Rush, A. J., & Zhu, J. (2006, November). Methodological Challenges in Constructing Effective Treatment Sequences for Chronic Disorders [Electronic Version]. Neuropsychopharmacology,

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.

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.

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.

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

Lemmon, D., Chung, H., & Schafer, J. L. (2006, May, May 31, 2006). A SAS procedure for latent class analysis with covariates. Paper presented at the 14th Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Lemmon, D. R. (2006, May). A Latent Class Model Estimation Engine for R and SAS. Paper presented at the 14th Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Schafer, J. L. (2006, May). Missing-data methods for causal inference. Paper presented at the 14th Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Kang, J. D. Y., & Schafer, J. L. (2006, March ). Demystifying double robustness: A comparison of alternative strategies for estimating a population mean from incomplete data. Paper presented at the Department of Statistics, The University of Michigan, Ann Arbor, MI.

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.

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.

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.

Gottschall, A. C., & Collins, L. M. (2006, March). Predicting condom use at first intercourse: utilizing multiple imputation and auxiliary variables, Society for Research on Adolescence Biennial Meeting. San Francisco, CA.

Jones, D. E. (2006, March). Accommodating endogenous predictors in analyses of developmental trends, Society for Research on Adolescence. San Francisco, CA.

Maldonado-Molina, M. M., & Collins, L. M. (2006, March). The Gateway Hypothesis of Substance Use: An operational definition, 2006 Society for Research on Adolescence Biennial Meeting. San Francisco, California.

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.

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.

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.

Jung, H., Schafer, L. S., & Ridenour, T. A. (2006, June). Multiple Imputation for incomplete multivariate data. Paper presented at the 14th Annual Meeting of the Society for Prevention Research, San Antonio, TX.

Lanza, S. T. (2006, June). Advances in latent class and latent transition analysis. Paper presented at the Society for Prevention Research conference, San Antonio, TX.

Lemmon, D., & Lanza, S. T. (2006, June). PROC LCA: A SAS procedure for latent class analysis. Paper presented at the Society for Prevention Research conference, San Antonio, TX.

Murphy, S. A. (2006, June). AdaptiveTreatment Design. Paper presented at the 46th Annual New Clinical Drug Evaluation Unit Meeting, Boca Raton, FL.

Ridenour, T. A., & Bray, B. C. (2006, June). Do correlates of preadolescent gambling resemble correlates of early substance use targeted in prevention programs? Paper presented at the Society for Prevention Research 14th Annual Conference: “Applying Prevention Science to Reduce Health Disparities”, San Antonio, TX.

Root, T. L., Sinton, M. M., Collins, L. M., von Ranson, K. M., Marmorstein, N. R., & Iacono, W. G. (2006, June). Disordered eating and the onset of drug use in females during late adolescence. Paper presented at the International Conference on Eating Disorders, Barcelona, Spain.

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.

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.

Li, R. (2006, July). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Conference of International Biometrics Society, Montreal, Canada.

Schafer, J. L. (2006, July). An overview of modern techniques for missing data and causal inference from an applied perspective. Paper presented at the Society for Multivariate Analysis, Budapest, Hungary.

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.

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

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.

Li, R. (2006, December). Variable selection in semiparametric modeling. Paper presented at the Department of Statistics, University of Missouri, Columbia, MO.

Murphy, S. A. (2006, December). SMART designs for developing dynamic treatment regimes. Paper presented at the MD Anderson.

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

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.

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.

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.

Jung, H., & Schafer, J. L. (2006, August). Multiple Imputation for incomplete multivariate data under a latent-class selection model. Paper presented at the 2006 Joint Statistical Meeting, Seattle, WA.

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

Li, R. (2006, August). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Joint Statistical Meeting, Seattle, WA.

Petrin, R. A. (2006, August). Item nonresponse and multiple imputation for hierarchical linear models. Paper presented at the Annual Meeting of the American Sociological Association, Montreal, Quebec.

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.

Kang, J. D. Y., & Schafer, J. L. (2006, April). Demystifying double robustness: A comparison of alternative strategies for estimating a population mean from incomplete data. Paper presented at the Department of Statistics, The Pennsylvania State University, University Park, PA.

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

Li, R. (2006, April). Variable selection in semiparametric modeling. Paper presented at the Department of Statistics, Purdue University, West Lafayette, IN.

Murphy, S. A. (2006, April-a). Experiments and dynamic treatment regimes. Paper presented at the Department of Statistics, Harvard University, Cambridge, MA.

Murphy, S. A. (2006, April-b). SMART designs for developing adaptive treatment strategies. Paper presented at the National Development and Research Institutes, New York, NY.

Root, T. L., Sinton, M. M., Collins, L. M., Von Ranson, K. M., Marmorstein, N. R., & Iacono, W. G. (2006, April). Using latent transition analysis to examine the relation between disordered eating and the onset of substance use in females during late adolescence, NIDA Research Training Institute. Bethesda, MD.

Schafer, J. L., Jung, H., & Ridenour, T. A. (2006 ). Multiple Imputation for incomplete multivariate data. Paper presented at the 2006 Spring Meetings of The International Biometric Society Eastern North American Region (ENAR), Tampa, 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.

Bierman, K. L., Nix, R. L., Maples, J. J., Murphy, S. A., & Group, 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.

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.

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.

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

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.

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.

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

Erath, S. A., Bierman, K. L., & Group, 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.

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).

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

Foster, E. M., Jones, D. E., & Group, Conduct Problems Prevention Research Group(2006). Can a costly intervention be cost-effective?: An analysis of violence prevention. Archives of General Psychiatry, 63(11), 1284-1291.

Gibson-Davis, C., & Foster, E. M. (2006). A cautionary tale: Using propensity scores to estimate the impact of food stamps on food insufficiency. Social Services Review, 80 93-126.

Hofer, S. M., Flaherty, B. P., & Hoffman, L. (2006). Cross-sectional analysis of time-dependent data: Mean-induced association in age-heterogeneous samples and an alternative method based on sequential narrow age-cohort samples. Multivariate Behavioral Research, 41(2), 165-187.

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(4), 552-561.

Lanza, S. T., Lemmon, D. R., Schafer, J. L., & Collins, L. M. (2006). PROC LCA User’s Guide. University Park, PA.

Li, R., Root, T. L., & Shiffman, S. (2006). A local linear estimation procedure for functional multilevel modeling. In T. A. Walls & J. L. Schafer (Eds.), Models for intensive longitudinal data (pp. 63-83). New York: Oxford University Press.

Maldonado-Molina, M. M., Reyes, N., & Espinosa-Hernández, G. (2006). Prevention research and Latino families: Resources for researchers and practitioners. Family Relations, 55, 403-414.

Maydeu-Olivares, A., & Coffman, D. L. (2006). Random intercept item factor analysis. Psychological Methods, 11 (4), 344-362.

Milan, S., Pinderhughes, E. E., & Group, Conduct Problems Prevention Research Group(2006). Family instability and child maladjustment trajectories during elementary school. Journal of Adolescent and Child Psychology(34), 43-45.

Mithas, S., Almirall, D., & Krishnan, M. S. (2006). Using propensity scores for causal inference: Do CRM systems cause one-to-one marketing effectiveness? . Statistical Science 21(2), 223-233.

Nichter, M., Nichter, M., Lloyd-Richardson, E. E., Flaherty, B. P., Carkoglu, A., & Taylor, N. (2006). Gendered dimensions of smoking among college students. Journal of Adolescent Research, 21, 215--243.

Preacher, K. L., & Coffman, D. L. (2006). Computing Power and Minimum Sample Size for RMSEA [Computer software]. Available from http://www.quantpsy.org.

Qu, A. P., & Li, R. (2006). Quadratic inference functions for varying-coefficient models with longitudinal data. Biometrics, 62, 379-391.

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.

Rovine, M. J., & Walls, T. A. (2006). Multilevel autoregressive modeling of interindividual differences in the stability of a process. In T. A. Walls & J. L. Schafer (Eds.), Models for intensive longitudinal data (pp. 124-147). New York: Oxford University Press.

Schafer, J. L. (2006). Marginal modeling of intensive longitudinal data by generalized estimating equations. In T. A. Walls & J. L. Schafer (Eds.), Models for intensive longitudinal data (pp. 38-62). New York: Oxford University Press.

Tang, Z. (2006). Modeling Reciprocal Relations in Longitudinal Developmental Data (No. 06-80). University Park: Pennsylvania State University, The Methodology Center

Walls, T. A., Jung, H., & Schwartz, J. E. (2006). Multilevel models for intensive longitudinal data. In T. A. Walls & J. L. Schafer (Eds.), Models for intensive longitudinal data (pp. 3-37). New York: Oxford University Press.

Walls, T. A., & Schafer, J. L. (Eds.). (2006). Models for intensive longitudinal data. New York: Oxford University Press.

Zafra-Cabeza, A., Rivera, D. E., Collins, L. M., Ridao, M. A., & Camacho, E. F. (2006). A risk-based model predicitive control approach to adaptive interventions in behavioral health. Paper presented at the 45th IEEE Conference on Decision and Control, San Diego, CA.

Li, R. (2005, September). Variable selection for high-dimensional data. Paper presented at the Department of Statistics, Colorado State University.

Maldonado-Molina, M. M. (2005, September). Examining Patterns of Substance Use Onset among Puerto Rican Youth. Paper presented at the 2005 National Hispanic Science Network, Coral Gables, FL.

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.

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.

Lanza, S. T. (2005, October-a). Latent class and latent transition analysis for substance use research. Paper presented at the Oregon Research Institute, Eugene, OR.

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

Maldonado-Molina, M. M. (2005, October). Pattern of substance use onset among Latinos. Paper presented at the NIDA Health Disparities Conference, Atlanta, Georgia.

Maldonado-Molina, M. M., Collins, L. M., Ramírez, R., & Canino, G. (2005, October). Patterns of Substance Use Onset among Puerto Rican Youth, 2nd NIDA Conference on Health Disparities. Atlanta, Georgia.

Maldonado-Molina, M. M., Collins, L. M., Ramirez, R. R., & Canino, G. (2005, October). Using Latent Transition Analysis to examine the Gateway Hypothesis of substance use onset. Paper presented at the College on Problems of Drug Dependence, Orlando, Florida.

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

Li, R. (2005, November). Variable selection in semiparametric modeling. Paper presented at the Department of Mathematics and Statistics, York University.

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., & 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.

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.

Li, R. (2005, March-a). Model selection for multivariate failure data. Paper presented at the ENAR 2005, Austin, Texas.

Li, R. (2005, March-b). Variable selection for high-dimensional data. Paper presented at the Department of Statistics, Texas A & M University.

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.

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

Lanza, S. T., & Foster, E. M. (2005, June). Using a behavioral problems checklist to assess risk of substance use: An IRT analysis of differential item functioning across gender, Society for Prevention Research conference. Washington, DC.

Jones, D. E. (2005, July). The economic analysis of prevention: An illustration using the Fast Track project. Paper presented at the Conference on Mental Health Services Research, Bethesda, MD.

Li, R. (2005, July-a). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Conference of International Biometrics Society, Montreal, Canada.

Li, R. (2005, July-b). Semiparametric estimation of covariance function for longitudinal data. Paper presented at the The joint meeting of the Chinese Society of Probability and Statistics (CSPS) and the Institute of Mathematical Statistics (IMS), Beijing, China.

Li, R. (2005, July-c). Variable selection in semiparametric regression modeling. Paper presented at the Institute of Applied Mathematics, Chinese Academy of Sciences, Beijing, China.

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.

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.

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.

Tanner, J. L., Lanza, S. T., Reinherz, H. Z., & Leis, J. A. (2005, February). Emerging adulthood: An era of well-being or risk for poor mental health? Paper presented at the Conference on Emerging Adulthood, Miami, FL.

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”.

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

Li, R. (2005, August-a). Analysis of longitudinal data with semiparametric estimation of covariance function. Paper presented at the Nonparametric Models for Complex Biological Data, University of California, CA.

Li, R. (2005, August-b). Partially nonlinear model and its application. Paper presented at the JSM 2005, Minneapolis, Minnesota.

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.

Li, R. (2005, April). Modeling computer experiments with functional response. Paper presented at the Society of Automobile Engineering 2005 congress, Detroit, MI.

Maldonado-Molina, M. M. (2005, April). Latent Class and Latent Transition Analysis. Paper presented at the Cambridge Health Alliance, Center for Multicultural Mental Health Research, Harvard Medical School.

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

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

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

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., 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.

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.

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.

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

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).

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., 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.

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. (2005a). Developmental psychology and public policy: Progress and prospects. Developmental Psychology, 41, 827-832.

Foster, E. M. (2005b). An episode-based framework for analyzing health care expenditures: An application of reward renewal models. Health Services Research, 14 1953-1971.

Foster, E. M., & Connor, T. (2005a). Public costs of better mental health services for children and adolescents. Psychiatric Services, 56(1), 50-55.

Foster, E. M., & Connor, T. (2005b). A road map for costs analyses of systems of care. In M. Epstein, K. Kutash & A. Duchnowski (Eds.), Outcomes for children and youth with emotional and behavioral disorders and their families: Programs and evaluation best practice (2nd ed., pp. 225-246). Austin, TX: Pro-Ed.

Foster, E. M., & Gifford, E. (2005a). Developmental and administrative transitions among special populations: Policies, outcomes and research challenges. In R. A. Settersten, F. Furstenberg & R. Rumbaut (Eds.), On the frontier of adulthood: Theory, research, and public policy (pp. 501-553). Chicago, IL: University of Chicago Press.

Foster, E. M., & Gifford, E. (2005b). The transition to adulthood for youth leaving public systems: Challenges to policies and research. In R. A. Settersten, F. Furstenberg & R. Rumbaut (Eds.), On the frontier of adulthood: Theory, research, and public policy (pp. 501-533). Chicago, IL: University of Chicago Press.

Foster, E. M., Heinrichs, B., Lanza, S. T., & Group, Conduct Problems Prevention Research Group(2005). Measuring delinquency in different racial groups (No. 05-69). University Park, PA: The Pennsylvania State University

Foster, E. M., Jensen, P., & Schlander, M. (2005). Treatment for ADHD: Is More Complex Treatment Cost-Effective for More Complex Cases? (No. 05-66). University Park: Pennsylvania State University, The Methodology Center

Foster, E. M., Jiang, M., Lochman, J., & Group, Conduct Problems Prevention Research Group(2005). Assessing a Screening Tool for Child Behavior Problems in the Absence of a Gold Standard: A Latent Class Analysis (No. 05-76). University Park: Pennsylvania State University, The Methodology Center

Foster, E. M., Johnson-Shelton, D., & Taylor, T. K. (2005). Measuring Time Costs in Interventions Designed to Reduce Behavior Problems among Children and Youth (No. 05-67). University Park: Pennsylvania State University, The Methodology Center

Foster, E. M., Jones, D. E., & Group, Conduct Problems Prevention Research Group(2005a). The high costs of aggression: Public expenditures resulting from Conduct Disorder. American Journal of Public Health, 95, 1767-1772.

Foster, E. M., Jones, D. E., & Group, Conduct Problems Prevention Research Group(2005b). The High Costs of Bad Behavior: Public Expenditures on Conduct Disorder (No. 05-70). University Park: Pennsylvania State University, The Methodology Center

Gifford, E., & Foster, E. M. (2005). Provider-level Influences on Receipt of Aftercare Services: A Multilevel Hazard Model (No. 05-77). University Park: Pennsylvania State University, The Methodology Center

Group, C. P. R. (2005). The Long-Term Prevention of Antisocial Behavior (No. 05-78). University Park: Pennsylvania State University, The Methodology Center

Hunter, D. R., & Li, R. (2005). Variable selection using MM algorithms. Annals of Statistics, 33(4), 1617-1642.

Jensen, P. S., Garcia, J. A., Glied, S., Crowe, M., Foster, E. M., & Group, M. C. (2005). Cost effectiveness of ADHD Treatments: Findings from the MTA Study. American Journal of Psychiatry, 162(9), 1628-1636.

Jones, D. E., Foster, E. M., & Gottschall, A. (2005). The Public Costs of Attention Problems (No. 05-68). University Park: Pennsylvania State University, The Methodology Center

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(1), 84-100.

Lanza, S. T., Foster, E. M., Taylor, T. K., & Burns, L. (2005). Assessing the Impact of Measurement Specificity in a Behavior Problems Checklist: An IRT Analysis (No. 05-75). University Park: Pennsylvania State University, The Methodology Center

Lavallee, K. L., Bierman, K. L., Nix, R. L., & Group, Conduct Problems Prevention Research Group(2005). The impact of first-grade ‘friendship group’ experiences on child social outcomes in the Fast Track Program. Journal of Abnormal Child Psychology, 33(3), 307-324.

Lemmon, D., & Schafer, J. L. (2005). Developing statistical software in Fortran 95. New York: Springer.

Lemmon, D. R., & Bray, B. C. (2005). Parallelization Strategies for a Statistical Model of Adolescent Development. Paper presented at the Computation Day Conference, Penn State University, University Park, PA.

Lemmon, D. R., & Schafer, J. L. (2005). Developing Statistical COM Servers. Paper presented at the Joint Annual Meeting of the Interface and the Classification Society of North America, St. Louis, MO.

Li, R., & Chow, M. (2005). Evaluation of reproducibility for paired functional data. Journal of Multivariate Analysis, 93(1), 81-101.

Li, R., & Marron, J. S. (2005). Local likelihood SiZer map. Sankhya: The Indian Journal of Statistics, 67(3), 476-498.

McCarty, C. A., McMahon, R. J., & Group, Conduct Problems Prevention Research Group(2005). Domains of risk in the developmental continuity of firesetting. Behavior Therapy, 36(2), 185-195.

Morris, D., & Foster, E. M. (2005). A stochastic dymanic model of the mental health of children. International Economic Review, 46(3), 837-866.

Murphy, S. A. (2005a). An experimental design for the development of adaptive treatment strategies. Statistics in Medicine, 24(10), 1455-1481.

Murphy, S. A. (2005b). A generalization error for Q-learning. Journal of machine learning research, 6, 1073--1097.

Murphy, S. A., Lynch, K. G., McKay, J. R., Oslin, D. W., & Have, T. R. T. (2005). Developing Adaptive Treatment Strategies in Substance Abuse Research (No. 05-71). University Park: Pennsylvania State University, The Methodology Center

Nix, R. L., Pinderhughes, E. E., Bierman, K. L., Maples, J. J., & Group, Conduct Problems Prevention Research Group(2005). Decoupling the relation between risk factors for conduct problems and the receipt of intervention services: Participation across multiple components of a prevention program. American Journal of Community Psychology, 36, 307-325.

Olchowski, A. E., Foster, E. M., & Webster-Stratton, C. H. (2005). Differential Cost-Effectiveness of Behavioral Intervention Components: An Assessment of the Incredible Years Program (No. 05-65). University Park: Pennsylvania State University, The Methodology Center

Osgood, D. W., Foster, E. M., Flanagan, C., & Ruth, G. R. (Eds.). (2005). On your own without a net. Chicago: University of Chicago Press.

Ridenour, T. A., Maldonado-Molina, M. M., Compton, W. M., Spitznagel, E. L., & Cottler, L. B. (2005). Factors associated with the transition from abuse to dependence among substance abusers: Implications for a measure of addictive liablility. Drug and Alcohol Dependence, 80(1), 1-14.

Rivera, D. E., Pew, M. D., Collins, L. M., & Murphy, S. A. (2005). Engineering Control Approaches for the Design and Analysis of Adaptive, Time-Varying Interventions (No. 05-73). University Park: Pennsylvania State University, The Methodology Center

Schafer, J. L., & Kang, J. D. Y. (2005). Comment on "Semiparametric estimation of treatment effect in a pretest-posttest study with missing data". Statistical Science, 20(3), 292-295.

Stephens, R. L., Connor, T., Hoang, N., Holden, E. W., Greenbaum, P., & Foster, E. M. (2005). The longitudinal comparison study of the national evaluation of the comprehensive community mental health services for children and their families program. In M. Epstein, K. Kutash & A. Duchnowski (Eds.), Outcomes for children and youth with emotional and behavioral disorders and their families: Programs and evaluation best practice (2nd ed., pp. 525-550). Austin, TX: Pro-Ed.

Stephens, R. L., Connor, T., Nguyen, H., Holden, E. W., Greenbaum, P., & Foster, E. M. (2005). The Longitudinal Comparison study of the National Evaluation of the Comprehensive Community Mental Health Services for Children and Their Families Program. In M. Epstein, K. Kutash & A. Duchnowski (Eds.), Outcomes for children and youth with emotional and behavioral disorders and their families: Programs and evaluation best practice (2nd edition ed., pp. 525-550). Austin, TX: Pro-Ed.

Walls, T. A., & Sorkin, A. (2005). Review of Control Systems Possibilities for Modeling Smoking Behavior (No. 05-79). University Park: Pennsylvania State University, The Methodology Center

Foster, E. M. (2004, September). Are complex treatments cost-effective for complex cases? Paper presented at the Health Economics Research Center, York, England.

Maldonado-Molina, M., & Coatsworth, D. (2004, October). Modeling acculturation using latent class cluster analysis. Paper presented at the NIMH/NIDA New Investigator Panel, 2004 National Hispanic Science Network Conference, San Antonio, TX.

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.

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.

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.

Foster, E. M. (2004, May-a). Allocation of resources for school-based prevention interventions. Paper presented at the Roundtable discussion at the Society for Prevention Research meetings, Quebec City, Quebec, Canada.

Foster, E. M. (2004, May-b). From early childhood to emerging adulthood: New research perspectives for public policy (invited discussant. Paper presented at the Forum sponsored by Chapin Hall Center for children and the Harris School of Public Policy, Chicago, IL.

Foster, E. M. (2004, May-c). Preventing child and adolescent mental disorders: Research roundtable on economic burden and cost effectiveness (invited participant), Rockville, MD.

Foster, E. M. (2004, May-d). Second NIMH Pharmacoeconomics Research Directions Workshop (invited participant), Washington, DC.

Foster, E. M., Ayers, T., & Porter, M. (2004, May). The cost effectiveness of a preventive intervention: The family bereavement program. Paper presented at the Society for Prevention Research meetings, Quebec City, Quebec, Canada.

Foster, E. M., Shelton-Johnson, D., Porter, M., & Ayers, T. (2004, May). Estimating of the costs of prevention interventions: An illustration using two large studies. Paper presented at the Society for Prevention Research meetings, Quebec City, Quebec, Canada.

Gottschall, A. C., Collins, L. M., & Maldonado-Molina, M. (2004, May). Psychological predictors of condom use at first intercourse, Society for Prevention Research meetings. Quebec City, Quebec, Canada.

Jones, D. E. (2004, May). Estimating of the costs of prevention interventions: An illustration using two large studies. Paper presented at the 12th Annual Meeting of the Society for Prevention Research, Quebec City, Canada.

Li, R. (2004, May). Variable selection for semiparametric regression models. Paper presented at the Department of Mathematics, Hong Kong, China.

Maldonado-Molina, M. M., & Collins, L. M. (2004, May). Dieting as a prospective risk factor for initiation of regular smoking among females and males Organized poster symposia at the Society for Prevention Research. Quebec City, Quebec, Canada.

Olchowski, A., Foster, E. M., & Webster-Stratton, C. (2004, May). Is “stacking” intervention components cost-effective? Paper presented at the Society for Prevention Research meetings, Quebec City, Quebec, Canada.

Root, T. L., Collins, L. M., & Clayton, R. R. (2004, May). Smokeless tobacco: A gateway drug?, Society for Prevention Research meetings. Quebec City, Quebec, Canada.

Rusby, J. R., & Foster, E. M. (2004, May). Observed teacher management practices and student behavior in first grade classrooms, Society for Prevention Research meetings. Quebec City, Quebec, Canada.

Taylor, T. K., Shelton-Johnson, D., & Foster, E. M. (2004, May). A randomized prevention trial in 19 elementary schools: Successful school recruitment strategies, Society for Prevention Research meetings. Quebec City, Quebec, Canada.

Walls, T. A. (2004, May-a). Advances in multi-level modeling of intensive longitudinal data. Paper presented at the Case Studies in Real-time Data Collection: Innovation in Practice and Methods.

Walls, T. A. (2004, May-b). Issues in intensive longitudinal data analysis. Paper presented at the Issues in Data Analysis Symposium conducted at the Compliance in Health Care and Research Conference Hosted by the American Heart Association Washington DC.

Walls, T. A., Schwartz, J. E., & Jung, H. (2004, May). Directions in intensive longitudinal data analysis. Paper presented at the 12th Annual Meeting of the Society for Prevention Research, Quebec, Canada.

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.

Li, R., & Root, T. L. (2004, March). Models and methods for analysis of intensively collected data. Paper presented at the International Biometric Society - ENAR Spring meeting, Pittsburgh, PA.

Walls, T. A. (2004, March). Scientific Issues Driving Model Development for Intensive Longitudinal Data. Paper presented at the Analysis of Intensively Collected Data. Symposium conducted at the Annual Meeting of the Eastern North American Region of the International Biometric Society, Pittsburgh, PA.

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

Foster, E. M., & Jensen, P. (2004, June). Are complex treatment cost-effective for complex cases? Paper presented at the NIMH-sponsored conference; Complexities of Co-Occurring Conditions, Washington, DC.

Gifford, E. J., & Foster, E. M. (2004, June). Contrasting service costs of children with and without conduct disorder, ADD and Comorbid diagnoses, NIMH-sponsored conference; Complexities of Co-Occurring Conditions. Washington, DC.

Graham, J. W. (2004, June). Missing data in longitudinal research. Paper presented at the Mak Planck Institute, Berlin, Germany.

Jones, D. E. (2004, June). The costs of illness among children diagnosed with conduct disorder and/or ADHD. Paper presented at the Conference on Complexities of Co-Occurring Conditions, Washington, D.C.

Jones, D. E., & Foster, E. M. (2004, June). Co