“The fact that men display wider variations in most biological and psychological valuations has been known for a long time. The pertinent question is how much this can explain differences in for instance study habits and learning results, and the degrees to which this is a matter of biological potential, with psychological and social factors, or whether it is an intricate mix.”
“As regards the individual this is of course always a matter of a mix. But it’s a new ball game when you talk about average gender differences. Statistical gender differences do not necessarily have a basis in biology