Sleep Restriction Treatment for Insomnia

"Treatment consists of sleep restriction treatment for insomnia. In this treatment, participants limit their bedtimes to the time they actually sleep. If they sleep most of the time in bed again then bedtimes are slowly built up again. This treatment technique has already been studied in several trials and found to be effective.~Mode of delivery is an online booklet, online exercises and weekly telephone support"

As an active control condition people monitor their sleep with a sleep diary (also included in the sleep restriction intervention)