This study is a validation study to document the acceptability of the Tonic and Phasic Alertness Training (TAPAT) program in older adults with chronic late-life insomnia. The goal of this study is to employ a computerized attention-training program, TAPAT, designed for chronic late-life insomnia in a remote, randomized, controlled trial to assess feasibility and initial efficacy in this population.

Inclusion Criteria:

• Participant must be 55 years of age or older.
• Participant must meet criteria for clinical insomnia - moderate severity based on the Insomnia Severity Index.
• Participant must be a fluent English speaker.
• Participant must have adequate visual, auditory, and motor capacity to use computerized intervention.
• Participant must have a computer and access to the Internet.

Exclusion Criteria:

• 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 using computer-based cognitive training programs or has used them within a month of the consent date.