理查德·贝尔，拥有美国伊利诺伊州立大学的精神病学医学博士学位，以及西北大学写作硕士学位；既有精神病理学领域的权威知识，又经过写作的专业训练。曾任美国伊利诺伊州心理学会的主席。现在是美国伊利诺伊州、印第安纳州、肯塔基州、俄亥俄州的医疗保险计划医疗部的负责人之一。

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"Switching Time is the first story centering on multiple personality disorder to be told by the treating physician. It is the incredible saga of a young woman stranded in unimaginable darkness who, in order to survive, created seventeen different versions of herself. In 1989, Karen Overhill walked into the office of psychiatrist Richard Baer complaining of depression. She poured out a litany of complaints, but in the disengaged way of someone who has experienced a terrible trauma. Slowly, Baer began to peel back the layers, eventually learning that Karen had been the victim of childhood sexual abuse. As time passed, though, his patient worsened and began to talk continually of suicide. Details of her abuse accumulated until he saw, via hypnosis, the true dimension of what Karen had suffered. Baer was at a loss to explain Karen's sanity, precarious though it was, until he received a letter from a little girl, Claire. One by one, Karen's ""alters"" began showing themselves -- men, women, young boys, a toddler, black, white, vicious, nurturing, prim, licentious. And their ""stepping out"" confronted Baer with the challenge of a lifetime. Somehow, to save Karen, he would have to gain the trust of her alters in order to destroy them."