Rowe discovered that there are two wait-time intervals. The second is the interval after receiving a response and before saying anything. For the first interval, the average teacher waits 0.9 seconds. The wait for the second interval is usually much shorter. Speculative thinking increases.
Students ask more questions.
Students propose more investigations. Student achievement improves. Classroom discipline improves. Teachers ask fewer questions. Teachers ask better questions, requiring higher-order thinking skills.