In Africa, boundaries delineated during the colonial era now divide young in-dependent states. By applying regression discontinuity designs to a large set of surveys covering the 1986-2001 period, this paper identities many large and significant jumps in welfare at the borders between five...

Regression discontinuity designs applied to a set of household surveys from the 1980-90s allow to examine whether Cote d'Ivoire's aggregate wealth was translated at the borders of neighboring countries. At the border of Ghana and at the end of the 1980s, large discontinuities are detected for...