Seeking Director for Penn State’s Prevention Research Center

December 18, 2013: Penn State is looking for the next director of the Bennett Pierce Prevention Research Center for the Promotion of Human Development (PRC). The PRC, established in 1998, focuses on etiological and translational research examining how families, schools, and communities can work together to promote healthy children, youth, … Continue reading

Featured Article: Will Quitting Smokers Lapse?


November 15, 2013: In an article in a forthcoming special issue of Nicotine and Tobacco Research, a team of Methodology Center scientists examines the changing relationships between factors that predict relapse for smokers who are quitting. The researchers, led by Research Associate Sara Vasilenko, used time-varying effect models to analyze … Continue reading

Researcher Profile: Sara Vasilenko


November 14, 2013: Three years ago, as Methodology Center Research Associate Sara Vasilenko was finishing her Ph.D. in Human Development and Family Studies at Penn State, she knew she wanted to explore and expand the methods available for researching sexual risk behavior—she just didn’t know how to pursue her goal. … Continue reading

Accepting Postdoc Applications


November 12, 2013: A postdoctoral fellowship will be available in the Prevention and Methodology Training (PAMT) program starting in summer 2014. PAMT, a joint effort between Penn State’s Prevention Research Center and The Methodology Center, cross-trains postdoctoral researchers as prevention scientists and methodologists. Through the program, prevention researchers become comfortable … Continue reading

Featured Article: How to Use Propensity Scores for Causal Inference


October 21, 2013: Researchers often would like to draw causal inferences from observational data; however, confounders, variables related to both the predictors and the outcome, typically undermine the validity of these inferences. In a recent article in American Journal of Community Psychology, Methodology Center Scientific Director Stephanie Lanza and her … Continue reading

Symposium: How to Get New Insights from Cross Sectional and Panel Studies


October 19, 2013: On November 13, The Methodology Center and The Prevention Research Center will co-host a symposium, “The Future of Regression: Time-Varying Effect Models to Explore Historical and Developmental Shifts in Coefficients,” featuring former and current Prevention and Methodology Training (PAMT) fellows Sara Vasilenko and Rebecca Evans-Polce and Methodology … Continue reading

2013 Summer Institute Trains Scientists on Latent Class Models


July 10, 2013: Last month, Drs. Stephanie Lanza and Bethany Bray presented the 2013 Summer Institute on Innovative Methods, “Introduction to Latent Class Analysis (LCA).” The two-day session covered basic and advanced LCA topics including LCA with groups, LCA with covariates, and LCA with a distal outcome. Participants received training … Continue reading

Come See Us at SPR!


May 28, 2013: Society for Prevention Research (SPR) Annual Meeting San Francisco, CA, May 28-31, 2013 The Methodology Center will be active at the upcoming annual meeting of the Society for Prevention Research (SPR).  At this year’s conference, The Science of Prevention: Building a Comprehensive National Strategy for Well-Being, we … Continue reading

Debashis Ghosh to Chair NIH Study Section


May 15, 2013: It’s been a good spring for Debashsis Ghosh, who has accepted an invitation to serve as chairperson of the Biostatistical Methods and Research Design Study Section at NIH’s Center for Scientific Review for the next two years. Members of study sections are selected on the basis of … Continue reading

Debashis Ghosh awarded the Mortimer Spiegelman Award


May 6, 2013: Debashis Ghosh has been awarded the 2013 Mortimer Spiegelman Award. The award was created in 1970 by the Applied Public Health Statistics Section of the American Public Health Association (APHA) to honor a statistician, 40 years of age or younger, who has made outstanding contributions to health … Continue reading

Software: New Version of PROC LCA


April 16, 2013: The Methodology Center is pleased to release the latest version (1.3.0) of the SAS procedure PROC LCA for conducting latent class analysis (LCA). The software is available for download free of charge. The download also contains PROC LTA, the SAS Procedure for latent transition analysis. For an … Continue reading

Innovation: Power Curves for Latent Class Analysis


March 28, 2013: Latent class analysis (LCA) is a tool used by behavioral scientists to identify subgroups within a population. When conducting LCA, choosing the number of classes (subgroups) in the model is a critical step. Some software, like the Methodology Center’s Bootstrapping Macro for PROC LCA, allows users to … Continue reading