Co-witness's Effects Of Misleading Post-event Information

The research aims to explore the differential effects that the true and the false of post-event information on recall for co-witness event. We analyzed of memory accuracy and memory confidence. In Study 1, participants received post-event, and then completed 20-item cued-recall questionnaire, The result declares: the effect to memory accuracy and confidence is indifference for participants who received the true post-event information. Whereas, participants who received the false post-event information are less accuracy than no discussion, and the answer is consistent with the false post-event information, but the confidence have no change. In study 2, participants were warned that they have received the post-event information may be wrong, so, they should recall the event based on themselves memory. The result showed: the memory accuracy of participants who received the warning have been significantly affected. The memory confidence of participants who received the true post-event information was higher than participants received the false post-event information. The current research had proved the warning eliminated effects of misleading post-event information.