No matter how correct or incorrect a student response to a question, their effort to respond is an open door for the instructor to respond. First I point out the positives or the correct line of his/her thought process. Even if the response is incorrect the instructor can lead with additional questions and turn it into a group discussion. This gives in my opinion the original student the feeling of leadership in the discussion since they were the first to make the attempt to repond. I find it makes them more secure in the classroom and more willing to continue to stay involved and motivated.