Any general statement as to whether the secular trend of a society is eugenic or dysgenic depends upon a reliable calibration of the measurement of general intelligence. Richard Lynn set the mean IQ of the United Kingdom at 100 with a standard deviation of 15, and he calculated the mean IQs of...

One considers a model of accumulation of the human capital in the presence of the international migration offers. One shows that under certain conditions,this option can support the increase in the stock of the national human capital by taking of account the externalities. Thus the `brain drain'...