## GOING THE DISTANCE

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### Research focus and central findings
- Identified long-run "channels of persistence" linking historical institutions to contemporary outcomes.
- Peru mita study (published in Econometrica in 2010) — colonial-era forced labor (the "mita") left enduring imprints:
  - Mita area had fewer paved roads, higher poverty, and greater likelihood of subsistence farming than neighboring areas.
  - Mechanism: fewer haciendas inside the mita reduced political push for road construction, limiting market access.
- Vietnam administrative history study (with Nathan Lane and Pablo Querubin):
  - Compared former Dai Viet (strong, centralized state) and former-Khmer (patron-client) regions.
  - Found household consumption in former Dai Viet lands was about one-third higher than in the former Khmer region.
  - Citizens of former Dai Viet villages were twice as likely to participate in local civic institutions, were better educated, and had better access to health care.
- Vietnam bombing study (with Querubin):
  - Used recreated raw security scores to show that overwhelming bombing made villagers more likely to support the communist insurgency and weakened noncommunist civic activities.

### Methods and methodological contributions
- Refined and popularized geographic regression discontinuity designs:
  - Extended classic discontinuity regression (e.g., Medicare at age 65) to geographic spaces (villages on either side of boundaries).
  - Applied GIS mapping to precisely locate villages relative to historical boundaries.
- Archival recovery and data reconstruction:
  - Located conditional probability matrices for Vietnam village security scores after exhaustive archival searches, enabling recreation of unrounded scores.
  - Noted the original security scores ranged continuously from 1 to 5 but were rounded to the nearest integer, creating a discontinuity (example raw values: 2.49 and 2.51).
- Developed tools for historical document processing:
  - Created a package called Layout Parser (based on open-source software) to scan documents with unusual formats and thousands of obsolete characters.
  - Working on an alternative to commercial optical character recognition software aimed at greater simplicity and accuracy for historians' documents.

### Empirical data highlights
- Vietnam village surveys:
  - Surveys covered 18,000 hamlets.
  - Conducted from 1969 to 1973.
  - Collected responses to 169 questions on local politics, economics, and security.
  - Security scores originally computed from monthly and quarterly surveys; scores ranged from 1 to 5.
- Publication and recognition:
  - Mita paper published in Econometrica in 2010.
  - Awarded the John Bates Clark Medal in 2020.

### Scholarly approach and broader impact
- Emphasizes micro-level, local comparisons to uncover granular causal mechanisms behind long-run development differences.
- Combines meticulous archival research, computational skills, and econometric innovation.
- Methods (geographic regression discontinuity, Layout Parser, improved OCR approaches) are positioned to unlock further research in economic history, political science, and related fields.
- Colleagues highlight persistence, thoroughness, and willingness to invest in long-term, labor-intensive projects that yield high payoffs.

### Biography and personal notes
- Background:
  - Grew up in Enid, Oklahoma, a city of about 50,000.
  - Studied economics at Harvard; later pursued a PhD at MIT.
  - Senior thesis on the mita; continued research with a two-year fellowship at the University of Oxford.
- Personal life:
  - Married to Austin Huang; three children ranging in age from four months to four years.
  - Long-distance running (including ultramarathons previously) informs her persistence in research.

*Source: Finance & Development, June 2022 — "People in Economics" profile of Melissa Dell.*

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_Source: https://www.imf.org/-/media/files/publications/fandd/article/2022/june/pie.pdf_