It's technique that works very well. Although this study itself? Is a bit of bullshit too if you look at it tongue emoticon They studied 200 students over two semesters at a single university, about 3/4 girls, 1/4 boys. I mean it's not that it's invalid - but it's just a study telling us what we already suspect. Another one with different metrics (ie - ppl) could easily come up with different results. But that's why I critique science harder than non-science.. 'cause when they tell us what we already believe we go, "See? Science says it!" Interesting fun though smile emoticon - and it's likely true enough smile emoticon