Two boys, ages 3 and 4, are playing with cars, and both boys want the bigger red car. As the first boy reaches for the red car, the second boy strikes him, knocking it out of his hand and taking the red car for himself. This is an example of aggression.

Instrumental aggression.

Explanation:

Instrumental aggression is type of hostile behavior in which a person is full of confidence and aggressiveness to attain something such as victory, reward , prize etc.This behavior is usually made against other person to whom a person is competing .

According to the question, example of instrumental aggression is shown as the second boy his displaying his aggressive behavior to attain the red car as an achievement and thus, he is striked and banged the first boy with his hands to achieve it.

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