 This research also suggests that thought substitution, while used as a suppression strategy during the no think phase, may work differently than suppression.Some researchers argue that thinking of something different during the no think phase forms a new association with the first word than the original word pair, which results in interference when using this strategy, which is different than the inhibition that results from simply not thinking about something.Dreams occur mainly during the rapid eye movement (REM) sleep and are composed of images, ideas, emotions, and sensations.