Final answer:
The subject of this question is Psychology and the grade level is college. The question refers to the actor-observer bias, which is a defense mechanism that helps protect self-concept. It describes the tendency to attribute others' behavior to internal factors while attributing one's own behavior to situational forces.
Step-by-step explanation:
This refers to the actor-observer bias, which is a phenomenon in psychology where individuals tend to attribute others' behavior to internal factors while attributing their own behavior to situational forces. It is a defense mechanism that helps to protect their self-concept and self-esteem. When people lack all the necessary information to make a situational explanation for another person's behavior, they tend to default to making dispositional attributions.