Susanne Hempel is an adjunct behavioral scientist at the RAND Corporation. She is the director of the Southern California Evidence-based Practice Center (EPC), leading contracts for the Agency for Healthcare Research and Quality (AHRQ) and other federal agencies, and she holds an indefinite delivery/indefinite quantity (IDIQ) to provide the Patient-Centered Outcomes Research Institute (PCORI) with literature reviews. She carries out systematic reviews in health care research and methodological projects aiming to improve evidence syntheses. She teaches systematic review methodology and applied psychometrics at the Pardee RAND Graduate School (PRGS). She is a professor at the University of Southern California. Prior to joining RAND, she worked at the Center for Reviews and Dissemination (CRD), University of York, in the United Kingdom. She earned her Ph.D. in psychology from the University of Halle-Wittenberg, Germany.