Reflections on Behaviorism and Society. Chapter 3: The Ethics of Helping People. Quote 5

“… Carl Rogers has suggested that the help given by the therapist (and one could also say teacher or friend) should be made carefully noncontingent on the behavior of the recipient. Unfortunately, reinforcers are always temporally contingent on some behavior, and they are effective, even though there is no causal connection.” (p. 35)