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John M. Berecz, a clinical psychologist who himself has Tourette's syndrome, has written a book with the goal of "spacious theorizing" about Tourette's syndrome and obsessive-compulsive disorder. He believes both have been overinterpreted from a specious biologic perspective that neglects psychosocial factors in considering etiology. From the premise that Tourette's syndrome and obsessive-compulsive disorder are actually the same "functional biopsychosocial" condition, he invokes catastrophe theory as a unifying and explanatory framework for his speculations. Catastrophe theory is based on topology, a branch of mathematics in which multidimensional geometric forms describe complex relations among variables. The approach is comparative and qualitative,
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