Inequality Amidst Nutritional Abundance: Native Americans on the Great Plains
研究大平原游牧民族的身高差异，发现其随纬度呈倒U形分布，并引入狩猎采集努力价格、生物量、降雨量等新变量解释部落间身高差异。
The heights of Plains nomads collected by Franz Boas varied by 9 centimeters, following an inverted U-shape by latitude, a pattern also found among Union Army soldiers born east of the Plains. To understand tribal differences, I bring new explanatory variables to the table in the study of historical heights: proxies for effort prices in hunting and gathering food, including biomass, rainfall estimated from tree rings, and tribal area, as well as proximity to trails used by western settlers and movement to reservations. Collectively, these variables explain a substantial share of the systematic variation in average height across tribes.