What style of parenting causes over/under achievers?

to be honest parenting has nothing to do with it. most things are genetic, even intelligence and ambition. for instance my parents were really strict on my brother who is 7 years older than me and he was an overachiever at princeton to become an author and then my parents didnt do crap to me, i was allowed to do anything, stay up, wear what i wanted and i still had the genes to be an overachiever and work my @ss off. now im a premed student. just look at yourself and your husband or boyfriend, are you both very driven with big goals, if not you may just have an underachiever. you can never really know but alot of things are set in stone just by genetics, you cant change a tigers stripes you know, same thing.