This chapter deals with empirical methods as applied in behavioral law and economics. It first reflects on the traditional use of a behavioral perspective in legal psychology and criminal law, as well as how behavioral law and economics differs from traditional law and economics. It also emphasizes the importance of scientific empirical evidence to law and economics. The chapter then discusses empirical methods for behavioral legal analysis by using data from the Journal of Empirical Legal Studies, focusing on the use of field data, surveys, vignettes, and lab experiments, along with alternative approaches such as field experiments and simulations. It describes and analyzes the methodological variance and cites publications from other peer-reviewed legal journals. In conclusion, it outlines potential paths for future methodological development.