The teacher understands how children learn and develop, and provides learning opportunities that support their intellectual, social, and personal development. I believe that extrinsic benefits are appropriate for younger aged students. Five to eight year olds, in my opinion, require much more extrinsic motivation than a 13 year old. As they get older intrinsic motivation should progressively replace the extrinsic benefits they were receiving.
Intrinsic motivation deals with what the person is feeling inside.
If the student feels good about what they are doing, there will more likely develop a long lasting commitment to the learning process. My reactions to Kohn's proposition is the same as his. I was raised in school with a majority of extrinsic motivation and I do not believe that I have a long-lasting learning desire that intrinsic motivation leaves behind.