The effects of episode spacing on adult's reports of a repeated event

Witnesses' reports of repeated events have been the focus of much research; however, the spacing interval between each episode of the event has differed greatly. The aim of the current study was to determine whether spacing interval affects participants' memory reports. Adults (N = 217) watched one (n = 52) or four videos depicting workplace bullying. The repeated event participants watched the four videos all in one day (n = 55), one per day over four consecutive days (n = 60), or one every three days over 12 days (n = 50). One week after the last (or only) video, participants reported on that video and answered some reflective questions about the procedure. Repeated-event participants also reported on what usually happens across the videos. Single-event participants reported proportionally more accurate information about the target video than repeated-event participants, and spacing interval did not affect repeated event participants' accuracy. However, accuracy scores were close to ceiling while errors rates were at floor levels, preventing us from drawing strong conclusions. We found some evidence that episode spacing affected participants' perceptions of their memory performance. Overall, spacing may have a minimal effect on adults' memory for repeated events, but further research is required.