Methods of Empirical Analysis Experiments- Although difficult, it is not impossible to run policy experiments Requires random assignment Pitfalls of experiments Selection issues, even if initial random assignment Subjects know they are in experiment Cost11 Methods of Empirical Analysis • Experiments – Although difficult, it is not impossible to run policy experiments. – Requires random assignment. • Pitfalls of experiments – Selection issues, even if initial random assignment. – Subjects know they are in experiment. – Cost