United States Supreme Court Rules on Expert Testimony
Many medical and legal commentators have expressed concern about the validity of scientific evidence that is proffered by expert witnesses at depositions and in courts of law.1,2 The sparse research that is available on the testimony of medical expert witnesses suggests that it is frequently flawed and erroneous.3 On June 28, 1993, the United States (US) Supreme Court ruled on the proper standard for admissibility of scientific evidence in the courtroom.4 Although the ruling establishes guidelines that are binding only in federal courts, it is expected that many state courts will follow the Court's ruling. This commentary reviews the Court's guidelines for admissibility of expert testimony, and expresses concern about their applicability in future cases involving scientific testimony.