Brainwashing or Genetics?
It's hard to judge what has more of an effect on human behavior.
People sense physical pain, and obviously that's a biological reaction.
People also sense pride and shame; that's pretty much a social construct.
Sexual arousal is a bit more difficult to deconstruct - obviously the need for reproduction has hard-wired the desire for sex, but is there a gene that makes most men more attracted to women with a "woman's haircut" rather than a "man's haircut"? That sounds more like cultural brainwashing to me.