Students who note that their instructor answers a preponderance of his own questions without waiting for a response soon grow dependent upon the teacher to do their thinking for them. In like manner, an answer too rapidly accepted has the effect of cutting off further information-processing and analysis by the rest of the class. Instructors may attest verbally to their aim of encouraging independent thinking, but unless they consciously work to expand their wait-time, they will have rhetoric with little resultant change in behavior.