The effect of time of night on wake–dream continuity.

Research has demonstrated a number of time-of-night and stage-of-sleep differences dream content, such as that dreams from later in the night are longer, more emotional, more bizarre. It was hypothesized that time of night may therefore demonstrate in the continuity of waking life into dreams. Participants (N � 16) were awoken 4 times a night for 2 nights and rated their dreams for wake- –dream continuity on a number of dimensions. It was found that time of night affects –dream continuity overall, particularly showing an increase of bizarreness over ; that there were more references to waking-life media in the early than late night; that were more references to waking-life activities and objects in the late than early night; that the ways in which different types of wake–dream continuity correlate (such as with present, past, and future waking life) change from the early to the late . No stage-of-sleep effects were able to be demonstrated. The results support the that time of night affects wake–dream continuity.