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The borderline syndrome is a clinical concept gaining increasing acceptance and consensus by clinicians. The consensus is that it can be differentiated from schizophrenia. However, it is still used synonymously by many with such terms as latent and ambulatory schizophrenia49 and psychotic character disorder.14 Grinker, Werble, and Drye18 give experimental evidence for a delineation of the borderline which differentiates it more clearly from other forms of psycho-pathology. They strongly suggest that the borderline is a specific syndrome which is not characterized by regression. Rather, it involves an arrest of the development of ego-function. Its consistency is marked by what Schmideberg39 has called a “stable instability.” Grinker et al. cite the observations of clinicians who have recognized the borderline syndrome as a confusing combination of psychotic, neurotic, and character disturbances fused with many normal or healthy elements. Using a factorial analysis of psychopathology within the continuum defined by the psychotic and neurotic border as exhibited by inpatients, he designated four subgroups of borderline patients: (1) a psychotic borderline group, (2) a neurotic borderline group, (3) a core borderline group, and (4) an “as if” borderline group. The psychotic borderline is characterized by inappropriate behavior, deficient sense of reality and self-identity, angry or negative behavior, and depression. The neurotic borderline is characterized by overt anxiety, child-like clinging, depression, feelings of worthlessness, and well-entrenched narcissistic tendencies. The core borderline group is characterized not so much by consistent psychotic-like behavior, but rather by confusion, inconsistent self-identity, and vacillating