In the sentence “[...] Because the behavior stems from needs...

The most powerful rewards are those that are intrinsically motivated within the learner. Because the behavior stems from needs, wants, or desires within oneself, the behavior itself is selfrewarding; therefore, no externally administered reward is necessary.

If all learners were intrinsically motivated to perform all classroom tasks, we might not even need teachers! But you can perform a great service to learners and to the overall learning process by first considering carefully the intrinsic motives of your students and then by designing classroom tasks that feed into those intrinsic drives. Classroom techniques have a much greater chance for success if they are self-rewarding in the perception of the learner. The learners perform the task because it is fun, interesting, useful, or challenging, and not because they anticipate some cognitive or affective rewards from the teacher.