Comparison of Efficacy of Behavioral Approaches for Treatment of Insomnia

Inclusion Criteria: * Male and female outpatients who are 18 or older to 72 years. Insomnia Severity Index \> or = 10 * Meet diagnostic criteria for Insomnia Disorder per DSM-5 Willing and able to sign Informed consent form Not planning on moving away from the area for the subsequent 12 weeks. Exclusion Criteria: * Participants who answer "yes" to any of the following will be excluded: * Females who are lactating or who are pregnant * Night shift workers, and individuals who nap 3 or more times per week over the preceding month * Consumption of caffeine beverages (i.e. tea, coffee, or cola) comprising usually more than 5 cups or glasses per day * Participation in another trial for insomnia * Persons unable to complete the study questionnaires and psychological tests * Persons who are unable to participate for the entire duration of the study, or in the opinion of the investigators, are likely to be non-compliant with the obligations inherent in the trial participation * Persons self-describing with severe anxiety or severe depression (BDI score of 29 or higher) or severe anxiety (BAI score of 36 or higher). * Persons with a history of epilepsy, seizures, or dementia * Any significant, severe or unstable, acute or chronically progressive medical or surgical condition * Serious head injury or stroke within the past year * Current alcohol or substance abuse/dependence (must have \>90 days of sobriety) * Presence of other neurological disorders (e.g., multiple sclerosis, Parki…