Weiwei Liu

Weiwei Liu is a Senior Research Scientist in Public Health with NORC at the University of Chicago. 

Liu has over 10 years of research experience in understanding the developmental etiology of risky and criminal behavior and evaluating intervention trials to target these behaviors using randomized control trials (RCT) or quasi-experimental design. Specifically, Liu’s research focuses on the following areas: (1) Understanding the developmental risk factors of problem behavior and health consequences particularly in vulnerable populations. Outcomes that she has examined include early childhood aggression, adolescence substance use, youth problem gambling, teen dating violence, criminal offending during adolescence and early adulthood, and substance use by women of reproductive age. (2) Evaluating preventive intervention trials targeting youth violence. She has led the evaluation effort of several large preventive intervention trials targeting early childhood aggression and teen dating violence. (3) Evaluating interventions targeting substance use and mental health problems in high risk populations.   She served as the lead analyst on several Screening, Brief Intervention, and Referral to Treatment (SBIRT) and Health Integration evaluation projects. 

Liu is proficient in all areas of modern statistics and methodology, including study design, sampling methodologies and advanced statistical analyses. She is, in particular, an expert in applying latent variable modeling to analyze large prospective longitudinal data, complex survey data, as well as analyzing experimental and quasi-experimental data to inform the efficacy and effectiveness of interventions. She is proficient in several statistical software packages, including SPSS, Stata, Mplus, and R.

Prior to joining NORC, Liu completed an internationally competitive NIH funded postdoctoral fellowship in Prevention Science at the Prevention and Early Intervention Research Center (PIRC) at Johns Hopkins University, where she received specialized training in the field of Prevention Science and worked closely with internationally renowned evaluation experts including Drs. Nick Ialongo, Liz Stuart, Sheppard Kellam, Hanno Petras, Katherine Masyn, Silvia Martins, Peg Ensminger and Carla Storr. She received her Ph.D. in Criminology and Criminal Justice from the University of Maryland, where she received strong training in in criminological theories and the criminal justice system in the U.S., and had the opportunity to work with renowned Criminologists, such as Drs. Dennis Gottfredson, Ray Paternoster, and Alex Piquero.  

Liu has published her work widely in leading peer-reviewed academic journals, and her scientific contribution has been recognized nationally.  She is an Associate Member of the College on Problems of Drug Dependence, and involved in committee and meeting planning work at Society of Prevention Science. She serves on the editorial board of Prevention Science, the official journal of Society for Prevention Research, and serves as a reviewer for over a dozen top ranking academic journals.