This article explores the ways in which experts can assist the jury to assess the credibility of other witnesses and suggests analytical approaches to such expert testimony. The article argues that the courts should be more receptive to expert testimony bearing on witness credibility and engage in a more nuanced consideration of the role played by proffered expert testimony and how the role of the evidence affects its admissibility. Doing so should lead the courts to embrace the promise of the modern rules of evidence and permit experts to assist juries as they assess credibility.