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Unformatted text preview: ln y between 1400 and 1900 normalized by land area and the natural
log of per capita GDP in 2000.7 As shown in the ﬁgure, a negative
7. Because the natural log of zero is undeﬁned, I take the natural log of 0.1. As
I show in the Appendix, the results are robust to the omission of these zeroexport
countries. Estimation Equation is per capita GDP in country i
is vector of variables reflecting origin of colonizer prior to
independence
is vector of variables reflecting geography and climate THE LONGTERM EFFECTS OF AFRICA’S SLAVE TRADES 155 TABLE III
RELATIONSHIP BETWEEN SLAVE EXPORTS AND INCOME
Dependent variable is log real per capita GDP in 2000, ln y
(1) (2) −0.112∗∗∗ −0.076∗∗∗
(0.024)
(0.029)
Distance from
0.016
equator
(0.017)
Longitude
0.001
(0.005)
Lowest monthly
−0.001
rainfall
(0.007)
Avg max humidity
0.009
(0.012)
Avg min
−0.019
temperature
(0.028)
ln(coastline/area)
0.085∗∗
(0.039)
Island indicator (3) (4) (5) (6) −0.108∗∗∗
(0.037)
−0.005...
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 Spring '14
 PatrickFrancois

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