Time perspective and sleep problems.

@article{Vranesh1999TimePA,
  title={Time perspective and sleep problems.},
  author={Jon G. Vranesh and Gilma Madrid and Juan Jorge Rodr{\'i}guez Bautista and Pamela L.Y.H. Ching and Robert A. Hicks},
  journal={Perceptual and motor skills},
  year={1999},
  volume={88 1},
  pages={
          23-4
        }
}
In this study of 137 university students, we examined the relationships among the five dimensions of the Zimbardo Time Perspective Inventory and three scales that measure aspects of sleep problems. All of the Zimbardo Inventory dimensions correlated significantly with each of the sleep problem-related scales. These data suggest that concern about time, regardless of the specific nature of individuals' time perspective, and certain sleep problems are significantly related. 
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