MICHAEL H. SIMON, District Judge.
Defendants Dan Heine and Diana Yates are charged with conspiracy to commit bank fraud and making false bank entries, reports, and transactions during the time that they were the two highest ranking officers at The Bank of Oswego (the "Bank"). On November 8, 2017, the Court held a hearing pursuant to Rule 104 of the Federal Rules of Evidence ("FRE"), outside the presence of the jury, to consider the Government's objection to Defendant Yates's proposed expert witness on memory issues. The Court heard arguments from counsel and proffered testimony from Daniel Reisberg, Ph.D. For the following reasons, the Court sustains the Government's objection to the proffered expert witness testimony.
According to Defendant Yates's Amended Rule 16 Disclosure for Expert Witnesses (ECF 515), Defendant Yates seeks to offer expert testimony from Daniel Reisberg, Ph.D., regarding the functioning and fallibility of human memory. According to Defendant Yates, Dr. Reisberg will not offer any opinions regarding the functioning or fallibility of any particular witness's memory and "will not vouch for any particular witness or comment on his or her credibility." ECF 515 at 14. Instead, describes Defendant Yates, "Dr. Reisberg's testimony will be limited to general principles of human memory and cognition." Id. Both the Government and Defendant Heine objected to Yates's summary of expected expert testimony by Dr. Reisberg. ECF 407 (Heine's objections to Yates's original notice); ECF 524 (Heine's objections to Yates's amended notice); ECF 525 (Government's motion in limine). Yates responded (ECF 533), and Heine and the Government replied. ECF 540 (Heine); ECF 541 (Government). In addition, the Court allowed Yates to file a sur-reply, which she did. ECF 546. On November 8, 2017, the Court held a preliminary hearing pursuant to FRE 104 at which Dr. Reisberg testified in the form of a proffer. After that proffer, Defendant Heine appears to no longer object to Defendant Yates calling Dr. Reisberg as an expert witness.
The Court finds that Dr. Reisberg is eminently qualified as an expert in the field of human memory and its failings. See ECF 515-3 (vita). The only issue before the Court is whether Dr. Reisberg's specific proffered testimony in this case will be helpful to the jury. To be admissible, expert testimony must "help the trier of fact to understand the evidence or to determine a fact in issue." FRE 702(a). Among other things, the trial court must be satisfied that the expert testimony is "relevant to the task at hand." City of Pomona v. SQM N. Am. Corp., 750 F.3d 1036, 1043 (9th Cir. 2014). As the Supreme Court explained in Daubert v. Merrell Dow Pharm., Inc.,
509 U.S. 579, 591 (1993).
In United States v. Libby, the district court held that the defendant failed to satisfy his burden to establish that an expert witness's testimony regarding the science of memory would assist the jury in determining a fact in issue. In that case, the district court excluded the proffered testimony of Dr. Elizabeth Loftus and several general surveys, noting that "the questions asked in these surveys were posed in a vacuum and did not provide a valid assessment of whether any perceived failure to understand memory errors can be rectified by the normal trial process." 461 F.Supp.2d 3, 14 (D.D.C. 2006). The district court concluded that the proffered expert testimony on memory would not be "helpful to the jury" under FRE 702 because the theories are not "beyond the ken of the average juror" and the trial processes would serve the same purpose. Id. at 18. In addition, the district court ruled that the proffered expert testimony is inadmissible under FRE 403. The court found that the probative value of the testimony would be minimal and that the prejudicial effect of invading the jury's role in assessing the credibility of witnesses substantially outweighed any probative value. Id. Other courts have reached similar conclusions in considering the admission of expert testimony on memory in ordinary cases. See, e.g., United States v. Redwood, 216 F.Supp.3d 890, 891 (N.D. Ill. 2016) (excluding memory expert under FRE 702 and FRE 403 and noting that "[w]hile in unique circumstances expert testimony regarding memory and perception may be warranted, this is not one of those cases").
The same conclusions apply here. This trial does not involve issues of repressed or recovered memories. It also does not involve any issue of the effect of drug use on memory or the confusion of an imagined, dreamed, or hallucinated event with one that actually occurred.
Instead, Yates argues that the proffered expert testimony will show the jury that memories are fallible and may deteriorate over time. At this level of generality, this information is within the ken of the ordinary juror. Further, this case is both built and defended largely with documents. As of the close of the Government's case, more than 500 exhibits have been received in evidence from the Government, Defendant Heine, and Defendant Yates. Because the necessary fit between the proffered expert testimony and the facts of this case is lacking, the proffered evidence will not help the trier of fact understand the evidence or determine a fact in issue. FRE 702(a). Further, any minimally probative value that may be present would be substantially outweighed by the dangers of confusing the issues, misleading the jury, and usurping the jury's proper role in evaluating the credibility of the witnesses. FRE 403.
The Court sustains the Government's objection to the proffered testimony of Defendant Yates's expert witness on issues of human memory and its fallibility.