The Interdisciplinary Experimental Laboratory (IELab) at Indiana University is devoted to cutting-edge experimental research in the behavioral sciences. The laboratory enables faculty, graduate students, and undergraduates at Indiana University, as well as other universities and agencies, to participate in the exploration of social science theories related to individual and group behaviors, with the purpose of developing more powerful theories of social interaction. A primary mission of the laboratory is the pursuit of spatially explicit research that can analyze how complex social and environmental stimuli affect human behavior. Funding for the laboratory facility and support staff is provided by the National Science Foundation, and by Indiana University.