Shu (Violet) Xu, Ph.D.
Curriculum Vitae
Family Translational Research Group New York University 345 East 24th Street, 2S‐Library, New York, NY 10010 E‐mail: sx5@nyu.edu Phone: (cell) 530.220.2424 Education 2010 Ph.D. University of California at Davis Quantitative Psychology Dissertation: “Analysis of Longitudinal Data with Many Zeros: A Comparison of Bayesian and Frequentist Methods” Advisor: Shelley A. Blozis, Ph.D. 2007 M.A. 1998 B.S. University of California at Davis Quantitative Psychology Psychology East China Normal University, Shanghai, P. R. of China Professional Experience 2012 ‐ Present Assistant Research Scientist Family Translational Research Group, New York University Supervisor: Michael F. Lorber, Ph.D. 2010 ‐ 2012 Research Associate The Methodology Center, College of Health and Human Development, The Pennsylvania State University Advisors: Donna L. Coffman, Ph.D. 2007 ‐ 2010 Graduate Research Assistant Department of Psychology, The University of California at Davis Advisor: Shelley A. Blozis, Ph.D. 2005 ‐ 2007 Teaching Assistant Department of Psychology, The University of California at Davis Publications Published Xu, S. & Lorber, M. F. (In press) Interrater agreement statistics with skewed data: Alternatives to Cohen’s Kappa. Journal of Consulting and Clinical Psychology. Lorber, M. F., Slep, A. M. S., Heyman, R. E., Xu, S., Dasanayake, A. P. & Wolff, M. S. (In press) Hostile family environments are associated with adult and childhood caries. Journal of Dental Research. Lorber, M. F., Xu, S., Slep, A. M. S., Bulling, L., & O’Leary, S. G. (2014) A new look at the psychometrics of the parenting scale through the lens of item response theory. Journal of Clinical Child and Adolescent Psychology. Xu, S., Blozis, S. A., & Vanderwater, E. A. (2014). On fitting a multivariate two‐part latent growth model to longitudinal data. Structural Equation Modeling. Hopfer, S., Hecht, M. L., Lanza, S. T., Tan, X., & Xu, S. (2013). Preadolescent drug use resistance skill profiles, substance use, and substance use prevention. The Journal of Primary Prevention. Lanza, S. T., Coffman, D. L., & Xu, S. (2013). Causal inference in latent class analysis. Structural Equation Modeling, 20, 361‐383. Blozis, S. A., Ge, X. J., Xu, S., Natsuaki, M. N., Shaw, D. S., Neiderhiser, J. M., Leve, D. L., & Reiss, D. (2013). Sensitivity analysis in multiple informant analysis when data are not missing at random. Structural Equation Modeling, 20, 283‐298. Xu, S., & Blozis, S. A. (2011). Sensitivity analysis of mixed models for incomplete longitudinal data. Journal of Educational and Behavioral Statistics, 36(2), 237‐256. Blozis, S. A., Cho, Y. I., & Xu, S. (2010). Latent curve models: A structural equation perspective. Sociological Methods and Research, 39(2), 297‐304. Cui, L. J., Xu, S., & Wang, X. H. (2000). The belief and modeling of aging. Chinese Journal of Gerontology, 20, 3‐5. (崔丽娟, 徐恕, 王小慧. (2000). 老年人的养老观念与养老模式. 中国老年学杂
志, 20(1), 3-5.) Li, G. Y., & Xu, S. (1999). On the association between studying adaptability and family environment of middle school students. In Learning and Research (pp.45‐58). Huaxia Press,Shanghai. (李广扬，徐恕 (1999).初中生学习适应性水平与家庭环境关系的调查。当代
学生研究丛刊。华夏出版社)
Technical Reports Lanza, S. T., Dziak, J. J., Huang, L., Xu, S., & Collins, L. M. (2011). Proc LCA & Proc LTA Users’ Guide (version 1.2.7). State College, PA: The Methodology Center at The Pennsylvania State University. Lanza, S. T., Dziak, J. J., Huang, L., Xu, S., & Collins, L. M. (2011). Proc LCA & Proc LTA Users’ Guide (version 1.2.6). State College, PA: The Methodology Center at The Pennsylvania State University. Dziak, J. J., Lanza, S. T., & Xu, S. (2011). LcaBootstrap SAS Macro Users’ Guide (version 1.1.0). State College, PA: The Methodology Center at The Pennsylvania State University. Conference Presentations Xu, S., & Lorber, M. F. (2014, May) Interrater Agreement Statistics with Skewed Data: Evaluation of Alternatives to Cohen's Kappa. A Poster presentation at the Modern Modeling Methods Conference, Storrs, CT. Xu, S., & Lorber, M. F. (2014, May) Treatment Effects in Randomized Controlled Trials with Noncompliance and Missing Data. A Poster presentation at the Modern Modeling Methods Conference, Storrs, CT. Xu, S. (2013, September). Missing data in randomized controlled trials with noncompliance. Presentation at the Innovations in Latent Variable and Random‐Effects Models Conference, San Antonio, TX. Xu, S. & Watorek, V. (2013, May). Missing data methods for confounding variables in marginal structural models. Presentation at the Modern Modeling Methods Conference, Storrs, CT. Selp, A. M. S., Heyman, R. E., Lorber, M. F., Makin‐Byrd, K. N., Xu, S., Travis, W. J., Foster, R. E., & USAF Mental Health Division (2013, January). Barriers and attractors to mental health help‐
seeking in the U.S. Air Force. Presentation at the Air Force Mental Health Division Annual Research Meeting, San Antonio, TX. Harris, A. R., Beekman, C., Cox, J. A., Xu, S., & Zadazor, K. (2012, June). Transitions to high school and substance use: A story from the ASAP study. Presentation at the 20th Annual Meeting of the Society for Prevention Research, Sloboda & Bukoski SPR Cup, Washington, DC. Xu, S., Coffman, D. L., Smith, E. A., & Caldwell, L. L. (2012, June). A comparison of new causal inference approaches for assessing mediation in the HealthWise South Africa study. Paper presented at the 20th Annual Meeting of the Society for Prevention Research, Washington, DC. Coffman, D. L., Savage‐Williams, J., Xu, S., Lanza, S. L., Birch, L. L. (2012, June). Do mothers' eating behaviors cause daughters' dieting? Drawing causal inferences from the Early Dieting in Girls Study. Paper presented at the 20th Annual Meeting of the Society for Prevention Research, Washington, DC. Xu, S., Blozis, S. A., & Coffman, D. L. (2012, May). Modeling longitudinal continuous variables with many zeros. Paper presented at the Modern Modeling Methods Conference, Storrs, CT. Xu, S., Blozis, S. A., & Coffman, D. L. (2011, June). Alternative models for longitudinal data with many zeros. Paper presented at the 19th Annual Meeting of the Society for Prevention Research, Washington, DC. Lanza, S. T., Coffman, D. L., Xu, S., & Almirall, D. (2011, June). Causal inference in latent class analysis. Paper presented at the 19th Annual Meeting of the Society for Prevention Research, Washington, DC. Dziak, J., Huang, L., Tan, X., Lanza, S. T., Li, R., & Xu, S. (2011, June). Software advances from The Methodology Center at Penn State. Technology demonstration at 19th Annual Meeting of the Society for Prevention Research, Washington, DC. Blozis, S. A., Xu, S., Young, H., & Stuifbergen, A. (2011, May). Sensitivity analysis of a mixed‐
effects model for incomplete longitudinal data. Poster presented at the American Psychological Society Annual Convention, Washington, DC. Xu, S., & Blozis, S. A. (2008, July). A two‐part mixed‐effects model for time‐use data: A comparison of Maximum Likelihood and Bayesian estimation. Paper presented at the International Meeting of the Psychometric Society, Durham, NH. Xu, S., Blozis, S. A., & Conger, K. J. (2006, March). Tobacco smoking from adolescence to early adulthood: A longitudinal investigation. Poster presented at Society for Research on Adolescence, San Francisco, CA. Awards & Grants 2012 2012 2011 2005 – 2006 Sloboda & Bukoski Society for Prevention Research (SPR) Cup Winner (team) Society for Prevention Research Early Career Prevention Network (ECPN) Travel Award ($275) Society for Prevention Research Travel Award ($250) Pacific Rim Research Program Mini‐Grant University of California, Office of the President “A Pilot Study of a Web‐based Survey on Temperament of Chinese, American, and Chinese Immigrant Children” ($3000) Computer Skills SAS NORM Mplus WinBugs R Mx HLM Excel SPSS Microsoft Visio Professional Trainings 2012 Small Sample Methodology: Tools for Conducting Intervention Research with Small Samples (Linda Collins), pre‐conference workshop of the 20th Annual Meeting of the Society for Prevention Research, Washington DC. 2012 Cautiously Adding Dynamics to Longitudinal Analyses (Jack McArdle), post‐conference workshop of Modern Modeling Methods Conference, Storrs, CT. 2012 An Introduction to Multiple Imputation (Ofer Harel), pre‐conference workshop of Modern Modeling Methods Conference, Storrs, CT. 2012 A Taste of Methodology: The Multiphase Optimization Strategy (MOST) for Building and Evaluating Behavioral Interventions (Linda Collins), The Pennsylvania State University. 2011 Summer Institute in Statistics and Modeling of Infectious Diseases (Causal Inference, by Thomas Richardson & Michael Hudgens), University of Washington. 2011 The Why, When, and How of Propensity Score Methods for Estimating Causal Models (Elizabeth Stuart), pre‐conference workshop of the 19th Annual Meeting of the Society for Prevention Research, Washington DC. 2009 Longitudinal Structural Equation Modeling workshop (Jack J. McArdle, Emilio Ferrer, Kevin J. Grimm & Keith F. Widaman), The University of California, Davis. 2007 Missing Data Workshop (Paul Allison), University of Pennsylvania. Service 2012 ‐ Present SAS Customer Advisory Panel, SAS Institute Inc., Cary, NC Ad hoc reviewer for Peer‐Reviewed Journals: 2013 ‐ Present Behavior Research Methods, Journal of Dual Diagnosis, Psychology of Violence 2012 ‐ Present Journal of Family Psychology, American Journal of Preventive Medicine, Acta Psychologica Sinica (Chinese), International Journal of Public Health 2011‐ Present Journal of Biopharmaceutical Statistics, Journal of Clinical Psychology Conferences: 2011‐ Present Annual Meeting of the Society for Prevention Research (abstract reviewer, Thematic Review Subcommittee member: Innovative Methods and Statistics committee) Consulting Editor’s Board: 2013‐ Present Journal of Family Psychology
Current Professional Affiliations 2011 ‐ Present Society for Prevention Research