Answer: Internal
Explanation: The internal attribution error can best be explained as a erroneous or unfair interpretation of an individual's decision, character or behavior about a certain situation, whereby judgment or decision is largely pronounced or made based on the individual's personality while placing less emphasis on the scenario or circumstance which triggered or resulted in such behavior or attitude. In the scenario above, judgment was made based on perry's initial personality while downplaying the circumstances which might have triggered or resulted in perry's yelling.