Date of Award

Summer 2023

Degree Type


Degree Name

Doctor of Philosophy (PhD)



Committee Chair

Dr. Craig Warlick

Committee Chair School


Committee Member 2

Dr. Melanie Leuty

Committee Member 2 School


Committee Member 3

Dr. Don Sacco

Committee Member 3 School


Committee Member 4

Dr. William Johnson

Committee Member 4 School

Criminal Justice, Forensic Science, and Security

Committee Member 5

Dr. Ashley Batastini

Committee Member 5 School



Legal cases involving expert testimony, especially by forensic mental health professionals, is increasingly relying on remote testimony to reduce associated costs and increase availability of such services. There is some evidence to show that expert testimony delivered via videoconference (VC) is comparable to expert testimony delivered in person; however, the most compelling evidence for this claim is unpublished. Other evidence across disciplines showed relative comparability between VC and in-person modalities across various types of outcomes. Based on both unpublished and published findings, this study tested the hypothesis that minimal differences in measures of expert credibility, efficacy, and weight assigned to testimony evidence would be found when testimony was delivered in person and via VC, with significant differences when testimony was delivered by telephone. To test this hypothesis, jury-eligible M-Turk workers provided their perceptions about a forensic psychological expert witness after viewing a videotaped mock court scenario. The videotaped scenario showed the witness testifying either physically in the courtroom, by telephone (audio-only), or using a two-way video conference system. MANOVA and ordinal regression tests demonstrated negligible differences in perceptions of the expert as well as decisions made based on their testimony. These findings provide clearer support for the implementation of remote testimony in courts. Recommendations for psychological expert witnesses are made based on these findings to better serve justice-involved persons and incorporate research-supported techniques into practice.