The Concept of Defense Mechanisms in Contemporary Psychology

What is the scientific status and the "truth value" of the concept of defense mechanisms? Among contemporary psychologists, three types of answers to this question may be expected. Some would wholeheartedly endorse the theoretical, clinical, and research value of this notion; others would reject it outright. Between these two extremes, a large number of observers, perhaps the majority, would suspend their judgment. Their attitude, compounded of hope and doubt, would capitalize on defense as an i