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We are born with only two fears, the fear of falling and loud sounds, all other fears are learned.

" We are born with only two innate fears: the fear of falling and the fear of loud sounds.

A 1960 study evaluated depth perception among 6- to14-month-old infants, as well as young animals. Researchers placed the subjects on a platform that had plexiglass just beyond its edge to it to see how many of the subjects would actually step over the “visual cliff.” Most of the subjects – both children and animals – didn’t go “over” and step out on to the plexiglass. The fear of falling is an instinct necessary for the survival of many species.

When you hear loud sounds, you most likely will react with a fight or flight type response. It’s called “your acoustic startle reflex,” said Seth Norrholm, a translational neuroscientist at Emory University. Norrholm explained that if a sound is loud enough “you’re going to duck down your head. Loud noises typically means startling. That circuitry is innate.” It’s a response we have, that signals something dangerous may be around the corner. "

Source: https://edition.cnn.com/2015/10/29/health/science-of-fear/index.html


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