Michael L. Perlis
Carla Benson-Jungquist
Michael T. Smith
Donn A. Posner

2005

A Session-by-Session Guide

There is now an overwhelming preponderance of evidence that Cognitive Behavioral Therapy for Insomnia (CBT-I) is effective (1;2), as effective as sedative hypnotics during acute treatment (4–8 weeks) (3;4), and more effective in the long term (following treatment) (3). In general,CBT-I yields an average treatment effect of about 50% improvement, with large effect sizes that are reliably around 1.0 (1;2;4).