Final answer:
The tendency to overestimate internal factors in others' behaviors is known as the fundamental attribution error, a type of perceptual bias that contrasts with the self-serving bias in how we interpret our own actions.
Step-by-step explanation:
The tendency to overestimate the contribution of internal factors is part of the perceptual bias known as the fundamental attribution error. This cognitive bias leads people to place undue emphasis on internal characteristics to explain someone else's behavior in a given situation, rather than considering the external factors that may have influenced the behavior. The fundamental attribution error is closely related to the concept of the actor-observer bias, where people tend to attribute their own actions to external situations, while attributing others' actions to their dispositions. Moreover, when considering one's own success or failure, the self-serving bias may play a role, where individuals attribute successes to internal factors like their own abilities or effort and blame failures on external factors such as situational elements or bad luck.