The goal of the study is to investigate whether treating insomnia using app-based cognitive behavioral therapy for insomnia (CBT-I) can improve cognitive impairment in breast cancer survivors compared to an active control group (sleep hygiene education). The study will also explore if CBT-I is associated with changes in the brain and in inflammation. The investigators will recruit approximately 84 participants with insomnia and cognitive impairment who have completed breast cancer treatment within 1-5 years.
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Conners continuous performance test 3rd edition
Timeframe: Baseline (week 0), post-treatment (approximately week 9), 6-months follow-up (approximately week 33)
Insomnia Severity Index (ISI)
Timeframe: Baseline (week 0), post-treatment (approximately week 9), 6-months follow-up (approximately week 33)