A version of the IAT developed for children shows that children as young as six years old have the same kind of race-based biases as adults. And, rather amazingly, an IAT developed for monkeys shows that they, too, exhibit implicit preferences for in-group members, associating good things like fruit with in-group members and bad things like spiders with out-group members.
Racism (as in in-group preferentialism) in monkeys
