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Which of the following findings do NOT provide evidence for a biological basis for personality?
Identical twins have more similar personalities than fraternal twins.
Adoption studies show that siblings adopted into different homes have more similar personalities than siblings reared together.
Distinctive temperaments are apparent early in infancy, often differ from caregiver's personalities, and are highly predictive of later traits.
People who travel more tend to be higher on the Big Five traits of conscientiousness and openness than those who do not.
Studies have identified distinct personality traits in many animal species.