Photo: Jan Von Holleben

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What Makes Up Your Personality? 5 Surprising Factors
Some people eat all their blue M&M's first. Some seek wisdom in tea leaves. Some are the sort to never leave a dish in the sink, while others are lifelong breeders of dust bunnies. Some flee from pigeons, while others keep pet iguanas. Though these behaviors may seem odd at first glance, they are the very idiosyncrasies that make us human. Rising from the bedrock of our personality and shaped by our varied environments, these quirks ensure that we are all peculiar—and, as such, not peculiar at all.

—Hannah Holmes

The personality traits that everyone has in common