Ten years ago we reported that Type A scoring students were twice as likely as their Type B peers to report sleep problems. In an exact 1992 replication of that study, no Type A-B differences in the frequency of self-reported sleep problems were observed; however, the over-all incidence of sleep problems among the 753 college students had increased substantially.
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References
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HicksR. A.MistryR.LuceroK.LeeL.PellegriniR. J. (1989) The sleep duration and sleep satisfaction of college students: Striking changes over the last decade (1978–1988). Perceptual and Motor Skills, 68, 806.
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