In this randomized, controlled trial, 150 older adults will be randomly assigned to CBT, TCC, or sleep hygiene/education control (EC) over 16 weeks and followed for one year. The aims of this project are to: 1) evaluate the effects of CBT vs TCC vs. EC on objective and subjective measures of sleep and on fatigue, mood, and health functioning in older adults with insomnia; 2) determine the effects of CBT vs.TCC vs. EC on measures of proinflammatory cytokine activity and sympathovagal balance, and whether these two biological mechanisms are related to changes of disordered sleep over the course of the treatment trial; and 3) evaluate whether circulating levels of proinflammatory cytokines are associated with measures of sleep continuity in older adults with insomnia over the treatment trial. This study will advance psychobiological models of disordered sleep and the potential benefits of two readily exportable behavioral interventions for promoting improvements in sleep outcomes in the elderly.