Altering misperception of sleep in insomnia: behavioral experiment versus verbal feedback.

Department of Psychology, Institute of Psychiatry, King's College London, England.
Journal of Consulting and Clinical Psychology (Impact Factor: 4.85). 09/2006; 74(4):767-76. DOI: 10.1037/0022-006X.74.4.767
Source: PubMed

ABSTRACT Forty-eight individuals with insomnia were asked to wear an actigraph and keep a sleep diary for 2 nights. On the following day, half were shown the discrepancy between the data recorded on the actigraph and their sleep diary via a behavioral experiment, whereas the other half were told of the discrepancy verbally. Participants were then asked to monitor their sleep for 2 further nights to index the effect of these interventions. Although both reduced sleep misperception, the behavioral experiment (effect size: 0.79 to 1.25) led to greater reduction in self-reported sleep impairment, insomnia symptoms, and sleep-related anxiety and distress compared with verbal feedback (effect size: -0.06 to 0.31). Further, the patients regarded the behavioral experiment as a more beneficial and acceptable intervention strategy than verbal feedback.

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