“The Gender-Equality Paradox in Science, Technology, Engineering, and Mathematics Education” by Gijsbert Stoet and David C. Geary,
▻http://journals.sagepub.com/doi/abs/10.1177/0956797617741719
The paradox is that countries with greater gender equality (Scandinavia, for instance) have a lower percentage of female STEM (Science, Technicques, Engineering, Mathematics) graduates, and also higher intraindividual differences in abilities (measured with #PISA).
▻https://doi.org/10.1177/0956797617741719
An hypothesis of the authors is that, in countries with lower gender equality (arabic-muslim countries, for instance), women are more eager to go to relatively well-paid STEM jobs, to secure some independance. In more egalitarian countries, it is not so necessary so women go to other areas. It’s just an hypothesis: as often in social sciences, there are few certainties.
The paper is not officially on-line, it seems, but is available on Sci-Hub ▻http://sci-hub.tw/10.1177/0956797617741719