State of Delaware v. Bradley Green - Exclusion of Expert Testimony

The Delaware Superior Court addressed the State's motion to exclude the testimony of a defendant's proposed expert forensic psychologist in a child sexual abuse case. The core issue was whether the expert's testimony, particularly regarding the reliability of children's reports and the circumstances of interviews, would constitute impermissible commentary on witness credibility. The court reviewed the expert's report and revised disclosures, which aimed to educate the jury on general empirical findings related to the reliability of children's accounts, memory formation, and interviewing techniques, while explicitly stating the expert would not opine on credibility.

This ruling has implications for how expert testimony is presented in child abuse cases within Delaware's court system. Legal professionals and courts must carefully scrutinize expert disclosures to ensure they adhere to evidentiary rules, particularly concerning witness credibility and the proper scope of expert opinion. While the expert's testimony was intended to inform the jury on relevant scientific findings, the court's gatekeeping function requires a strict assessment of its admissibility to prevent undue prejudice or improper influence on the jury's determination of witness believability. The decision highlights the importance of precise expert disclosures and adherence to established legal standards for expert evidence.