Was this discrimination the result of some universal, innate tendency or were preschoolers subtly learning about discrimination?

WSJ: In Children, Bias Blooms Chillingly Early | Mind & Matter

He thinks the reason people believe in conspiracy theories is that humans have an innate tendency to try to link major events with major causes.

ECONOMIST: A possible explanation for conspiracy theories

Another Swiss trait is an innate and unquestioning tendency to identify with their country's institutions and sacred cows.

ECONOMIST: In old California

He called our tendency to truck and barter innate.

FORBES: Happy Father's Day