n. an ego defense in which apparently logical reasons are given to justify unacceptable behavior that is motivated by unconscious instinctual impulses. In psychoanalytic theory, such behavior is considered to be a defense mechanism. Examples are “Doesn’t everybody cheat?” or “You have to spank children to toughen them up.” Rationalizations are used to defend against feelings of guilt, maintain self-respect, and protect oneself from criticism. In psychotherapy, rationalization is considered counterproductive to deep exploration and confrontation of the client’s thoughts and feelings and their effect on behavior. —rationalizevb.