کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
902370 916157 2007 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Night-time thoughts in high and low worriers: Reaction to caffeine-induced sleeplessness
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی روانپزشکی و بهداشت روانی
پیش نمایش صفحه اول مقاله
Night-time thoughts in high and low worriers: Reaction to caffeine-induced sleeplessness
چکیده انگلیسی

There is ample evidence for the existence of an association between sleeplessness and worry. Not much is known, however, concerning the nature of this relationship. Therefore, a study was conducted investigating the causal relationship between sleeplessness and nocturnal worry. A 2×2 (Worry×Induced sleeplessness) analysis of covariance design was used. The first factor consisted of a subject variable defined by scoring either high or low on a trait measure of worry (the Penn State Worry Questionnaire) and the second factor consisted of 300 mg caffeine or placebo. A total of 96 female undergraduate students participated. The dependent variables comprised measures of nocturnal worry (the Night-Time Thoughts Questionnaire) and subjective and objective sleep parameters. Overall, caffeine caused an increase in nocturnal worry and sleeplessness. A significant interaction effect occurred between Worry and Induced sleeplessness on one of the objective sleep parameters, but no other interaction effects were significant. The results suggest that worry may occur as an epiphenomenon of sleeplessness.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behaviour Research and Therapy - Volume 45, Issue 4, April 2007, Pages 715–727
نویسندگان
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