Seen on Marginal Revolution:
As I pointed out in my post, Do Boys Have a Comparative Advantage in Math and Science? results like this can explain why there are proportionately fewer women entering STEM fields in richer and more gender-equal countries than in poorer and less gender-equal countries.
One point which many people are missing is that small but growing gender differences with development are only one minor effect of a much bigger phenomena. In a primitive economy, everyone does more or less the same thing, subsistence farming. Only in a market economy under the division of labor can people specialize. Specialization reflects and amplifies diverse personalities and interests. People sometimes complain about “excess” variety in a market economy but do they extend that complaint to careers, arts, and lifestyles? In a market society we get Corn Flakes, Frosted Flakes and Coconut Flakes and we get cardiologists, dermatologists and otolaryngologists and we get Chicago Blues, dub step, and K-Pop and we also get a flowering of sexual preferences and lifestyles. As Mises once said the very idea of personality as we know it today is a result of the market economy. The small gender differences some people focus on are merely the averaging by gender of much larger individual differences. Thus, I would revise the authors:
In sum, greater availability of material and social resources facilitates the independent development and expression of individual-specific preferences, and hence may lead to an expansion of individual differences in more developed and equal-opportunity countries.