Siwei Liu

Siwei Liu Portrait

Education

  • Ph.D., Human Development and Family Studies, The Pennsylvania State University, 2012
  • M.A.S., Statistics, The Pennsylvania State University, 2012
  • M.A., Human Development and Family Studies, The Pennsylvania State University, 2008
  • B.S., Psychology, Fudan University (Shanghai, China), 2006

About

In addition to her academic appointment in the Department of Human Ecology at UC Davis, Siwei Liu is a faculty member in the Psychology Graduate Group. Her research interests include methods to analyze longitudinal data, in particular intensive longitudinal measures such as physiological signals, ecological momentary assessments (EMA), daily diary data, and neuroimaging data. She currently serves as an associate editor for Psychological Methods.

Research Focus

Professor Liu is interested in methods to analyze longitudinal data and their applications in developmental and health psychology. Her work combines multiple statistical frameworks, including multilevel modeling, structural equation modeling, time series analysis, and functional data analysis. Her current research involves techniques for modeling synchrony and coregulatory processes in close relationships (e.g., parent-child, couples), and the applications of intensive longitudinal methods in health-related research (e.g., stress, physical activity, sleep).

Publications

  • Gates, K. M., & Liu, S. (2016). Methods for quantifying patterns of dynamic interactions in dyads. Assessment, 23(4), 459-471.
  • Liu, S., Zhou, Y., Palumbo, R., & Wang, J.-L. (2016). Dynamical correlation: A new method for quantifying synchrony with multivariate intensive longitudinal data. Psychological Methods, 21(3), 291-308.
  • Liu, S., & Molenaar, P. C. M. (2016). Testing for Granger causality in the frequency domain: A phase resampling method. Multivariate Behavioral Research, 51, 53-66.
  • Liu, S., & Molenaar, P. C. M. (2014). iVAR: A program for imputing missing data in multivariate time series using vector autoregressive models. Behavior Research Methods, 46, 1138-1148.
  • Liu, S., Rovine, M., Klein, L. C., & Almeida, D. (2013). Synchrony of diurnal cortisol pattern in couples. Journal of Family Psychology, 27, 579-588.
  • Liu, S., Rovine, M., & Molenaar, P. C. M. (2012). Selecting a linear mixed model for longitudinal data: Repeated measures ANOVA, covariance pattern model, and growth curve approaches. Psychological Methods, 17, 15-30.

Teaching

Professor Liu teaches courses in the area of developmental methodology. She currently teaches Research Methods in Human Growth and Development and Longitudinal Data Analysis.

Awards

Professor Liu has won several awards during her career. In 2015, she received the Faulty Development Award from UC Davis. In 2012, she won the Dissertation Award from the Society of Multivariate Experimental Psychology.