The study examines the interaction effect of sleep and emotion on false memory, focusing on the effects of sleep on false memory. The researchers used the Deese-Roediger-McDermott (DRM) task to study the effects of sleep and emotion on false memory. Participants were divided into a "sleep group" and a "wake group" and completed an initial learning session either in the evening or in the morning. After a learning session, participants in the sleep group slept at night and completed a recognition test in the morning, while participants in the wake group stayed awake during the daytime and completed their recognition test in the evening. The results showed that sleep modulated the emotional effect on false memory, while participants in either a positive or negative mood state showed more false recognition than those in a neutral state. The study concludes that sleep and emotion interactively affect false memory. The study highlights the importance of understanding the interaction between sleep and emotion in influencing false memory and the potential for enhancing memory accuracy.