SUMMARY Twelve male undergraduate students were deprived of sleep for o n e night and were tested with a series of cognitive tasks.

Detailed information, including dream reports and questionnaires on the dreams, was collected from 17 female and 11 male undergraduates (mean age = 20.6 years; range: 19-31 years) as part of a two week investigation into day-residue and dream-lag phenomena. Eligibility for participation was based upon a self-reported dream recall frequency of three or more dreams per week. It was hypothesized that the day-residue and dream-lag effects would be supported by an examination of subject-rated dreams and residues. In addition, it was hypothesized that subdivisions of the day-residue temporal rating would provide a more accurate representation of residue frequency. A last hypothesis explored the possibility that the dream experience-dream recording interval would be correlated with the number of residues reported. Results directly support the existence of a day-residue effect, while only indirectly supporting a dream-lag effect. The subdivisions of the day-residue temporal category implied that instantaneous incorporations of physical stimuli do occur and that a period of 2 hours before bed yields a high hourly rate of incorporation. No correlation between the dream experience-dream recording interval and the number of residues reported was found. Implications for mnemonic dream sources are discussed.

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15 women and 3 men enrolled in a first-year undergraduate psychology course participated in a study concerned with evaluating the home use of a behavioral response monitor of sleep/wakefulness. The subjects, representing a range of fairly poor to good sleepers, used the device for three consecutive nights in their own homes. The 1967 Monroe Questionnaire was used to differentiate "good" sleepers from "poorer" sleepers. The behavioral response system indicated that subjects could adequately report how long they slept but consistently underestimated their number of arousals and could not reliably specify sleep-onset latency. The behavioral response measure was an effective and economical means of obtaining in-home objective sleep data and holds potential for clinical evaluation of disorders of initiating and maintaining sleep.

There exist two perspectives which have examined the concept of bizarreness in sleep mentation. One perspective holds that most dreams are bizarre whereas the other view holds that most are mundane. However, neither one of these perspectives haveadequately considered the issue of bizarreness in nightmares. To fulfill a course requirement, 43 university students from a first year psychology course were asked to record one home-recalled dream and two home-recalled nightmares (one "typical" nightmare and one "worst" nightmare). Two bizarreness scales were used to analyze the 129 sleep mentation reports for bizarreness. There was no support for the hypothesis that "worst" nightmares would possess the most bizarreness. When the length of dreams and nightmares was held constant no differences were found in bizarreness or realism. The finding that bizarreness is not a feature common to all dream reports is not consistent with the activation-synthesis hypothesis.