9
Introduction (40 minutes)
Lab Experiment (37 minutes)
Field Experiment - Video 1 (43 minutes)
Field Experiment - Video 2 (14 minutes)
Practice Questions - Video 1 (32 minutes)
Practice Questions - Video 2 (13 minutes)
Natural Experiment (13 minutes)
Clues on Assumption 5 (24 minutes)
Practice Questions (22 minutes)
