Lol nevermind, I just went to some other site and this was what it said.
"The ladder theory is a funny, scientific explanation of how men and women
are attracted to each other. It also covers such topics as why women
sometimes just want to be friends but men always want sex. It is based upon
many years of sociological field testing, and was first conceptualized in
1994 in Exeter, CA by Dallas Lynn with acknowledgements to Jared Whitson for
his role in formalizing the theory."
must have went to a wrong site when I said it was just about nice guys don't get girls and stuff like that.
There's more from just a simple google search.
http://www.laddertheory.com/