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Expert Testimony

  1. Steven C. Bank Ph.D.

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0334

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Bank, S. C. 2010. Expert Testimony. Corsini Encyclopedia of Psychology. 1–3.

Author Information

  1. Center for Forensic Psychiatry, Ann Arbor, Michigan

Publication History

  1. Published Online: 30 JAN 2010


As the world becomes more complex, expert testimony assumes an increasingly important and controversial role in the Anglo-American judicial system. The Federal Rules of Evidence specify that expert testimony occurs when a witness, qualified as an expert by knowledge, skill, experience, training, or education, testifies by providing opinions or facts that assist the judge to understand evidence or to determine a fact in issue. For justice to be served, expert witnesses present unbiased opinions and facts based on sound science or technical knowledge.


  • expert witness testimony;
  • expert witness;
  • expert testimony