Jeff Naecker is a Ph.D. student in the Department of Economics at Stanford University, where he specializes in behavioral and experimental economics. Jeff’s research uses experiments to better understand how people make choices that affect others. This includes field experiments that show how small informational nudges can cause sizable increases in pro-social behavior. He also uses data collected in the laboratory and on-line to predict large-scale pro-social actions, such how many people in an entire state decide to sign up as organ donors. This combination of experimental and observational data can be used by governments and non-profits to predict the effect of policies and programs before they are implemented.Prior to coming to Stanford, he earned his B.A. in physics and economics from the University of California, Berkeley. When not studying human behavior, Jeff enjoys playing guitar, swimming, and cooking with his wife. He hails from Pasadena, California, and currently lives in Oakland.