NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Jacob Moscona

Department of Economics
M.I.T.
E52-380, 50 Memorial Drive
Cambridge MA 02142

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NBER Working Papers and Publications

February 2017Keeping It in the Family: Lineage Organization and the Scope of Trust in Sub-Saharan Africa
with Nathan Nunn, James A. Robinson: w23196
We present evidence that the traditional structure of society is an important determinant of the scope of trust today. Within Africa, individuals belonging to ethnic groups that organized society using segmentary lineages exhibit a more limited scope of trust, measured by the gap between trust in relatives and trust in non-relatives. This trust gap arises because of lower levels of trust in non-relatives and not higher levels of trust in relatives. A causal interpretation of these correlations is supported by the fact that the effects are primarily found in rural areas where these forms of organization are still prevalent.

Published: Jacob Moscona & Nathan Nunn & James A. Robinson, 2017. "Keeping It in the Family: Lineage Organization and the Scope of Trust in Sub-Saharan Africa," American Economic Review, American Economic Association, vol. 107(5), pages 565-571, May. citation courtesy of

January 2016State Capacity and American Technology: Evidence from the 19th Century
with Daron Acemoglu, James A. Robinson: w21932
Robert Gordon's The Rise and Fall of American Economic Growth provides a compelling interpretation of how technical change and innovation has radically changed the living standards of the citizens of the US in the past 150 years. Lying behind these changes are the institutions which have allowed the country to harness its human potential. In this paper we conduct an empirical investigation of the impact of one key set of institutions, the capacity of the US state as proxied by the presence of post offices in a county, on innovation. We show that between 1804 and 1899, the time when the US became the world technological leader, there is a strong association between the presence and number of post offices in a county and patenting activity, and it appears that it is the opening of postal off...
 
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