Validating Econometric Design: A Case Study from James Habyarimana's Updates to his 2003 Job Market Paper

This substack takes a closer look at a significant yet subtle transition in economic research methodology using James Habyarimana’s 2005 revision of his 2003 job market paper as a case study. James, who graduated from Harvard and is now a professor at Georgetown, initially presented a difference-in-differences (diff-in-diff) analysis (including an event…