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Illinois Supreme Court Clarified Admissibility of Opinion Testimony Under Frye Standard

For some time, the Frye standard has been the unequivocal test for the admission of expert testimony in Illinois. However, Illinois appellate jurisdictions have not uniformly applied the test. The proper method of applying the Frye test to determine the admissibility of expert testimony was set forth in the Illinois Supreme Court™s recent holding of Zachary Donaldson v. Central Illinois Public Service Co., No. 89679, 2002 WL 254042 (Feb. 22, 2002).
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