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Conflicts Of Interest In Scientific Expert Testimony, Mark R. Patterson
Conflicts Of Interest In Scientific Expert Testimony, Mark R. Patterson
Faculty Scholarship
Conflicts of interest have significant implications for the reliability of scientific expert testimony. However, the courts' treatment of conflicts is not always in accord either with the treatment of conflicts in scientific practice or with the particular problems that scientists' conflicts present in court. In response, this Article proposes two basic changes in the treatment of scientific expert testimony. First, courts should strive to separate issues of bias from issues of scientific validity-the two sets of issues are now conflated at times. Second, courts should pay more attention to biases of scientists who perform the research underlying expert testimony, whereas …
Uncertain Rule Of Certainty: An Analysis And Proposal For A Federal Evidence Rule, The , Michael M. Martin
Uncertain Rule Of Certainty: An Analysis And Proposal For A Federal Evidence Rule, The , Michael M. Martin
Faculty Scholarship
Two characteristic principles of Anglo-American evidence law are the requirement that witnesses testify only to their personal observations (the "first-hand knowledge" rule) and the prohibition against witnesses testifying to their inferences (the "opinion" rule). However, a longstanding exception to these principles permits witnesses possessed of skill or learning to draw inferences, often from facts they have not personally observed. Because such expert opinion testimony is exceptional, it is hedged about with various restrictions in addition to those such as relevancy which apply to all testimony. The predicate for admission of expert opinion testimony generally consists of two elements. First, the …