The effects of positive and negative pre-sleep stimuli on dream experiences

In this study, the emotional and physical content of dreams was examined with post-sleep reports. In the first phase of the study, 45 students were asked to keep a dream diary for a week. The next week, the students were asked to look at a picture with positive, neutral, or negative affect in the evening before going to bed and then to record their dreams the following morning. Results showed that the pictures produced corresponding affect in morning dream reports, though physical elements of dreams and pictorial stimuli were not related to affect.