This course explores the use of experiments to make causal (evidence-based) claims in American political behavior research. The course begins with the foundational methodology of different types of experiments (including field, lab, and survey experiments) where students will develop the skills to critically analyze experimental designs. Topics in this part of the course include the importance of randomization, internal and external validity, strengths and weaknesses of each method, and interpretation of results. The remainder of the course focuses on innovative experimental designs that allow us to investigate political behavior research questions such as how political attitudes can vary with physiological traits, the effects of the media and political advertisements on political opinions and voting, the effects of non-political events on voters evaluations of the government, the effects of partisanship on non-political decisions and evaluations, and more.