Abstract
The present study prospectively investigated the relationship between nightmare prevalence, nightmare distress, and waking imaginative involvement. One hundred and sixteen individuals completed self-report indices of fantasy proneness, psychological absorption, and daydreaming as well as a sleep and dreaming questionnaire and a nightmare distress measure. Participants then kept a dreaming and nightmare log for 21 consecutive nights. As predicted, both nightmare prevalence and nightmare distress were associated with higher levels of fantasy proneness, psychological absorption, and a guilty-dysphoric daydreaming style but not with positively-toned daydreams or a highly distractible daydreaming style. Further, these results were not due to higher levels of overall dream recall. Last, these effects were additive as high scores on either fantasy proneness or absorption added significantly higher incremental validity to the prediction of nightmare prevalence and distress than just from the dysphoric daydreaming measure alone. The results are discussed within the context of emerging etiological theories of nightmare production.
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