When someone agrees with a request due to a favorable opinion of the requester, what concept does this illustrate?

The concept illustrated by someone agreeing with a request due to a favorable opinion of the requester is compliance. Compliance refers to the act of conforming or yielding to a request or demand, often influenced by the perception of the requester. When individuals have a positive view of someone — perhaps due to a relationship, respect, or admiration — they are more likely to follow that person's requests, reflecting a willingness to acquiesce based on that favorable opinion.

In this scenario, the individual's decision to comply is significantly shaped not just by the request itself, but by their personal feelings toward the requester, underscoring the relational dynamics at play. This highlights how interpersonal relationships can play a critical role in decision-making and adherence to requests.