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Cognitive-behavioral therapy (CBT) is the first-line treatment for insomnia, which is clinically important in as much as 20% of the population, but few trained therapists are available. To determine the usefulness of an automated, Internet-based version of CBT for insomnia (Sleep Healthy Using the Internet [SHUTi]), researchers recruited 303 people with insomnia over the Internet and randomized them to a 9-week course of SHUTi or an automated insomnia education program. Insomnia was defined by self-reports of taking >30 minutes to fall asleep initially (sleep latency), >30 minutes of wake time after sleep onset (WASO), sleeping ≤6.5 hours/night, and sleep disturbances or daytime symptoms producing considerable distress or impaired function.…