Which of the following describes the 'teacher-expectancy effect'?

The teacher-expectancy effect refers to the phenomenon where a teacher's expectations about a student's performance can significantly influence that student's actual performance. When teachers hold high expectations for their students, students are more likely to perform well, demonstrating the powerful impact of belief on student outcomes. Conversely, if teachers harbor low expectations, they may inadvertently hinder students' performance by providing less encouragement or support, ultimately leading to poorer outcomes.

Understanding this concept underscores the importance of positive reinforcement and high expectations in educational settings. It highlights how the attitudes and perceptions of educators can shape the learning experiences and achievements of their students, regardless of the students' actual abilities or backgrounds.