This is a final report on a series of research studies conducted to determine the effects of videotaped testimony on information processing and decision making in jury trials. The report is divided into the following sections: descriptions of the research methodology and technological aspects of the videotaped stimuli; summaries of eleven studies under two general categories, information retention and trial-participant credibility; a discussion of the general conclusions; and the research team's efforts at grant information dissemination. The research team concludes that use of videotape does not adversely affect juror responses and can even result in higher retention levels. Appendixes provide information on the videotape equipment used and tables of data for both the information retention and the trial-participation credibility studies. (RL)