Week 7

Agenda 2/25

Natural Experiments

1. How do natural experiments differ from lab experiments?
2. How are natural experiments conducted in political science?
   1. Estimating the Impact of the Hajj: Religion and Tolerance in Islam's Global Gathering
      1. To what part of the treatment do we attribute the observed effects? What’s the causal mechanism?
      2. Is the study externally valid?

Agenda 2/27

1. Midterm review
   1. Q&A
   2. Practice questions
2. Midterm FRIDAY
   1. Bring a green book!