the twins study was interesting. my IQ has to be higher than my sisters' (they're twins) but I won't send this to my family for fear of insulting everyone. I always thought if it had something to do with my mom having less time to spend on them because there were 2, or if they had different learning styles (they do everything together and are more team players like that) that made it difficult for them to do independent work or do well on tests. Of course, my mom and stepdad used it against me many times, since they knew I was capable of getting good grades, so if I got Bs or Cs, I'd get in trouble. If they did, it was more okay because they had to work harder. hmph.