perhaps researchers need to look into differences in average lifestyle. there are plenty of male students who don't do very much except study at that age. they

perhaps researchers need to look into differences in average lifestyle. there are plenty of male students who don't do very much except study at that age. they are not very valuable at all. on the other hand, girls they get asked for all kinds of things, especially if they are in classes where they are already in the minority. I'd say it's pretty hard to combine calculus with a 'spare' time job promoting a good cause and a column in a magazine and sitting on the board of a student's association somewhere.