Is There a Link Between Genetics and Intelligence?

i'm a social psychologist, so i'm interested in how people construct e sense of identity. The flyn effect has the increase in intelligence we've observed since intelligence tests were measured at the start of the twentieth century. Every decade or so, there seems to be a three point increase in intelligence. We become more liberalis societyis undoubtedly. And one of the reasons, and so this ismaybe because of better nutrition, better education.