Hypothesis and options are used in the description of beliefs.
This is just a brief example of scientific method.
Consistent with the predictions of the theory, the empirical analysis findsthat the level of genetic diversity within a society has a hump-shaped effect ondevelopment outcomes in the pre-colonial as well as in the modern era, reflectingthe trade-off between the beneficial and the detrimental effects of diversity onproductivity. While the intermediate level of genetic diversity prevalent among theAsian and European populations has been conducive for development, the high degreeof diversity among African populations and the low degree of diversity among NativeAmerican populations have been a detrimental force in the development of theseregions. This paper thus highlights one of the deepest channels in comparativedevelopment, pertaining not to factors associated with the dawn of complexagricultural societies as in influential hypothesis, but to conditions innately related to thevery dawn of mankind itself.
Testing the Ecosystem Productivity- Diversity Hypothesis in a ..
This paper argues that deep-rooted factors, determined tens of thousands ofyears ago, have had a significant effect on the course of economic development fromthe dawn of human civilization to the contemporary era. It advances and empiricallyestablishes the hypothesis that, in the course of the exodus of Homosapiens out of Africa, variation in migratory distance from the cradleof humankind in East Africa to various settlements across the globe affected geneticdiversity and has had a long-lasting hump-shaped effect on the pattern ofcomparative economic development that is not captured by geographical,institutional, and cultural factors.
Ecology/Species Richness and Diversity
This section demonstrates the robustness of the effects of geneticdiversity to additional controls for the Neolithic transition timingchannel. In particular, the analysis is intended to alleviate concerns thatthe significant effects of genetic diversity presented in Section 4.2.2,although estimated while controlling for the timing of the NeolithicRevolution, may still capture some latent influence of this otherexplanatory channel if spurious correlations exist between migratorydistance from East Africa and exogenous factors governing the timing of theNeolithic transition. The results from estimating some extendedspecifications, constructed by augmenting with controls for the ultimatedeterminants in the Diamond hypothesis, for log population density in 1500CE are presented in .