Income and inequality in the Aztec Empire on the eve of the Spanish conquest
Has this study been replicated?
The atlas records 1 reproduction of this study. Recorded outcomes: 1 failed.
Reproductions
- A comment on "Income and inequality in the Aztec Empire on the eve of the Spanish conquest" [Working paper], Hammar (2025). Outcome recorded: computational issues, robustness challenges.
Computational: A coding error was found in the main IV analysis (Model 2), which used the reg and predict commands in Stata. In this analysis, the restriction of the natural logarithm of population density having to be greater than or equal to zero was only imposed in the first stage and not in the second stage. Moreover, estimating the IV model in two steps, instead of using a single command such as ivregress, resulted in different standard errors.
Outcome read from Computational: p. 4, fulltext.
Cite this record
Alfani, G., & Carballo, A. (2023). Income and inequality in the Aztec Empire on the eve of the Spanish conquest. Nature Human Behaviour, 7(8), 1265–1274. https://doi.org/10.1038/s41562-023-01636-3
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