http://abcnews.go.com/Technology/afr...ry?id=12759901Fear of snakes, spiders and other creepy crawlers is so universal that most of us probably believe we must have been born with it. It's universal, so it must be innate.
Not necessarily, according to research at several major universities.
That work suggests that we learn which things can be harmful at a very young age -- even just a few months -- because we have an evolutionary bias that predisposes us to fear things that have posed a threat throughout human history.
"What we're suggesting is that we have these biases to detect things like snakes and spiders really quickly, and to associate them with things that are yucky or bad, like a fearful voice," developmental psychologist Vanessa LoBue of Rutgers University said in releasing the research.