“…On the other hand, if the defense is used primarily to ward off anxiety, strong instinctual demands, and unconscious conflict, then it serves an abnormal function. Mahler and McDevitt (1968) have suggested that the dual functions of defenses may occur more or less simultaneously, and they give several case descriptions of this from their longitudinal study of infants and toddlers. For example, "Peter" was unusually aggressive as an infant and small toddler, but during his third year, the aggression was repressed.…”