STATE Trial: SusTained Attention Training to Enhance Sleep

Inclusion Criteria: * Participant must be between ages 55 and 80. * Participant must meet current diagnostic criteria for Primary Insomnia Disorder based on the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). * Participant with hypertension must be undergoing treatment for this condition and on a stable medication regimen for hypertension for ≥ 8 weeks prior to screening. * Participant must be a fluent English speaker * Participant must have adequate visual, auditory, and motor capacity to use computerized intervention * Participant must be willing to wear Microsoft Band 2 watch to track sleep patterns Exclusion Criteria: * Participants with cognitive impairment, delirium or dementia, or evidence of cognitive impairment from a pre-existing cause. * Participants with untreated psychiatric conditions, including substance abuse/dependence disorders, untreated obstructive sleep apnea, diagnosis of other sleep disorders (e.g., restless legs syndrome), recent hospitalization, ongoing chemotherapy or other cancer treatment, and concurrent engagement in another insomnia treatment. * Participants enrolled in another concurrent research study. * Participants who have difficulty performing assessments or comprehending or following spoken instructions, in the judgment of the screening clinician. * Participants using computer-based cognitive training programs or has used them within a month of the consent date.