Judges Commons^™

Unspringing The Witness Memory And Demeanor Trap: What Every Judge And Juror Needs To Know About Cognitive Psychology And Witness Credibility, Mark W. Bennett

American University Law Review

The soul of America's civil and criminal justice systems is the ability of jurors and judges to accurately determine the facts of a dispute. This invariably implicates the credibility of witnesses. In making credibility determinations, jurors and judges necessarily decide the accuracy of witnesses' memories and the effect of the witnesses' demeanor on their credibility. Almost all jurisdictions' pattern jury instructions about witness credibility explain nothing about how a witness's memories for events and conversations work-and how startlingly fallible memories actually are. They simply instruct the jurors to consider the witness's "memory" with no additional guidance. Similarly, the same pattern …