The current study aims to evaluate the effects of internet-delivered self-help CBT for insomnia through a randomised controlled trial. Adult persons with insomnia will be invited via a popular scientific website to fill out online questionnaires. Participants will be randomised into treatment groups or the waiting list. Participants will be measured 4, 16, and 40 weeks after intervention with the same questionnaires.
Inclusion Criteria:
Exclusion Criteria: