I think we are all conditioned to some degree to associate credibility with things like confidence, authority, sexual energy etc... or at least the appearance of them. When we meet people, we typically have to decide quite quickly whether we trust them or not, and if so, how much.
I don't know how much of this is biological and how much is social though... I expect that aspects tied in with biological function are instinctive (such as wanting to believe people who are attractive to us), but maybe the attractiveness is instinctual and the self-deception aspect is learned.
|