What behavior involves changing one's opinions or actions to align with those of a group?

The behavior that involves changing one's opinions or actions to align with those of a group is referred to as conformity. This social influence phenomenon occurs when individuals adjust their beliefs or behaviors to fit in with the norms or expectations of a group, even in the absence of direct pressure or commands. Conformity is often driven by the desire for acceptance, social approval, or the belief that the group possesses more knowledge or insight.

In contrast, obedience involves following direct orders or commands from an authority figure, while compliance refers to changing one's behavior in response to a request from another person. Peer pressure can influence conformity but is more specific to the pressure exerted by peers to behave in a certain way. Thus, while all these concepts relate to social influence, conformity most accurately describes the process of aligning oneself with group behaviors or opinions.