Read the article and answer questions?
1. Summarize the article 2. What economic question(s) is the paper concerned? 3. What economic policy issues in the paper concerned? 4. What type of data does the paper use to tests its hypotheses (observational, social experiment, laboratory experiment, field experiment)? 5. What should be on the agenda for future research in this area? 6. What are the strengths and weaknesses of these analyses?
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