When one person inaccurately perceives a second person and the resulting expectations cause the second person to behave in ways consistent with the original perception?

This phenomenon is known as the "self-fulfilling prophecy." It occurs when an individual's beliefs or expectations about another person lead them to act in ways that inadvertently encourage the other person to confirm those beliefs. For example, if a teacher expects certain students to Excel, they may provide more support and attention to them, which boosts the students' performance. Conversely, negative perceptions can hinder the second person's abilities and reinforce the original misjudgment.