“…One might say that much of the intent of behaviorism, both as a philosophy and a science, has been to show how mentalistic concepts can be avoided in the development of psychology as a science. Intentionality and "purpose" have long been at the heart of this problem, and whether behaviorism and/or operant conditioning has, or even in principle can, successfully deal with intentionality remains a bone of contention (Dennett, 1978;Putnam, 1988;Skinner, 1957Skinner, , 1989Timberlake, 1988;Wittgenstein, 1953).…”