Bill Kanasky, Jr., Ph.D. continues discussing the importance of validity and reliability in jury research and specifically talks about the use of the clopening in jury research. The clopening is a combined opening and closing statement - basically a summary presentation of the case. The issue with the clopening is that it impacts your validity and reliability because jurors don't hear clopenings in a real trial so any feedback collected is skewed. Also, in order to get the most accurate data in jury research, you have to measure immediately after the presented stimulus/information. For example, if you want feedback on your opening, you must measure immediately after the delivery of the opening. If you want feedback on a witness, the measurement must come immediately after the mock jurors hear from that witness. Waiting to gather feedback until all witnesses have been shown will not provide an accurate measurement. The most scientifically sound methodology for conducting jury research is to take measurements immediately after completing delivery of each piece of content that you want feedback on. Any other process for data collection will compromise your validity.  Watch the video of this episode: https://www.courtroomsciences.com/r/ZBE