© D.L. Crumbley
Helpfulness to the trier of the facts is the ultimate touchstone for the admissibility of expert testimony. To be helpful the (1) witness must be qualified as an expert, (2) expert must have a reasonable factual basis for the testimony, (3) testimony must be based upon reliable methods, and (4) testimony must be relevant to the facts in dispute. Accounting testimony can be the subject of expert testimony.
Sources: In Re Paoli Railroad Yard PCB Litigation, 916 F.2d 857 (CA-3, 1990).
Fed. Rul. Evidence 702 and 703; General Electric Co. v. Joiner, 522 U.S. 136 (1997).
Computer Systems Engineering, Inc. v. Qantel Corp., 740 F.2d 67 (CA-1 1984).