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AbstractThe inpatient treatment of severe personality disorders requires a multidisciplinary clinical approach based on an understanding of the patient's personality organization, predominant personality traits, and comorbid psychiatric disorders.

What was the environmental complex in which the Plio‐Pleistocene hominids were evolving? What situations selected f o r increasing variation in hominid morphology? A n ap‐preciation of ecological dynamics is important to develop answers to those questions. The circumstances that accompany periodically more severe semiarid successions appear to have promoted a shqt in early australopithecine morphology toward hyper‐robust forms. Successional dynamics (including ameliorated conditions) may have resulted in repeated sympat y of potentially competing lines. Through the process of character divergence, some earliergracile populations appear to have emerged more Homo‐like by the end of the Pliocene. Palaeodemographic analysis combined with detailed ecological modeling offers new possibilities f o r explorato y retrodictions concerned with common and divergent hominid adaptations. [australopithecines. palaeoecology, early Homo]