Expert Testimony and Scientific Evidence

Abstract:     
This 40-page paper was prepared as a handout at a presentation for the Maryland Judicial Institute, with the Honorable Paul Grimm as a co-presenter. Issues and questions addressed are as follows: When is Expert Testimony Appropriate? Necessary?; When is Opinion Testimony Permitted, Whether Expert or Lay?; Opinions in Out-of-Court Statements; Who Is, and Who May Testify as, an Expert?; May/Must the Expert Testify at Trial to the Factual Basis of His/Her Opinion?; Opinions on Ultimate Issues; Sufficient Basis for Expert Testimony: Generally, 5-401, 5-702, and 5-403; Scientific Evidence; Frye-Reed vs. Daubert/Kumho Tire: How Do They Work? Which is Better?

Number of Pages in PDF File: 40

Keywords: Expert Testimony, Evidence, Opinion Testimony, Opinions in Out-of-Court Statements, Scientific Evidence, Frye-Reed, Daubert/Kumho Tire, Lay Witnesses, Opinions on Ultimate Issues

JEL Classification: K19, K29, K39, K49

working papers series