Zachary Fisher is an Assistant Professor in the Department of Human Development and Family Studies at the Pennsylvania State University and the Principal Investigator of the Time Dependent Systems Lab. Dr. Fisher’s research is focused on methods development to help researchers better understand and intervene on complex time-dependent processes. His current work addresses the analysis of time-varying measures of physiology and behavior, intensive longitudinal data (ILD), the joint modeling of behavioral and biological data, time-varying parameter models, the synthesis of multi-way data (e.g. cross-sectional and time-series) and statistical programming.


  • Ph.D., Quantitative Psychology, University of North Carolina at Chapel Hill
  • M.S., Applied Statistics, Columbia University