What Impact Does Teacher Wait Time Have on Students' Classroom

What impact does teacher wait time have on students' classroom performance?

A) When wait time is several seconds, students are more likely to answer questions.
B) If wait time is increased beyond two seconds, students will be embarrassed by the awkward silence and not answer.
C) Wait time of about one second is optimal.If it is much longer, students will get distracted and forget the question.
D) Increased wait time is only necessary when working with low-ability learners.Average and above-average learners don't need much wait time.