Answer: This research suggests that aggressive instincts can be modified through experience.
Zing Yang Kuo was a renowned psychologist famous for his works in the behaviorism school.
He was famous for his research on animals mainly to determine the origin of the formation of the behaviour of animals.
In one of his research works, he demonstrated that behaviour can be modified. He did this by raising a cat and a rat together from birth. The cat was not aggressive to the rat as opposed to the normal aggression of cats towards rats.