Quote:
Originally Posted by blankall
I think it's 2 things:
1) We are evolutionarily programed to avoid bugs and spiders. Some are poisonous.
2) Spiders tend to jump out at people. You end up with a conditioned response where you are naturally startled when you see a spider, which creates a similar emotion to fear.
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It's passed down from mothers who scream hysterically when they see a spider in the bathtub.