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The author integrates “psycho-digestive” metaphor with contemporary relational perspectives and developmental research to propose a way of thinking about the etiology and evolution of binge/purge eating disorders—including “purging anorexia,” bulimia, and “yo-yo” binge/dieting—and the personality organization that may underlie them. Focusing on the unifying, cyclical nature of these disorders, the author hypothesizes that an early-developing, fear-based form of somatopsychic perseveration may be set in motion from the beginning of life when a nursing infant is unable to achieve a psychic connection with a physically present and feeding (m)other. Without intervention, such a preattachment failure in (m)other/infant synchrony would inevitably impact all subsequent development. The author proposes that it may also lay the foundation for a uniquely intertwined somatopsychic personality organization—what she calls a “perseverant” personality—that fosters the development of binge/purge eating disorders. A perseverant personality is defined as a solitary and circular mode of being, thinking, and relating that is organized around a sustained physiological and psychological reliance on the feeding as a mode of thought-processing and affect regulation.