Abstract
Sixty-three female and 43 male undergraduates responded to a "worry" scale, a trait anxiety measure, and a question asking preferred length of sleep to clarify conflicting findings regarding the relationship between worry and anxiety and length of sleep (e.g., Hartmann, 1973; Hicks & Pellegrini, 1977; Kumar & Vaidya, 1984). Worry and length of sleep were positively correlated, supporting Hartmann's contentions. Anxiety was related to sleep in a U-shaped curvilinear fashion. Anxiety and worry were substantially correlated (r = .60) for subjects above the median on worry but were not correlated for subjects below the median. Worry may be the underlying construct in the positive relationship between anxiety and length of sleep for highly anxious persons. Comparison of high worry-low anxiety and low worry-high anxiety groups also suggests that our understanding of the relationships among sleep, anxiety, and worry may benefit from the simultaneous consideration of worry and anxiety factors.
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