Transdiagnostic TreatmentNIA_Improving Function and Well-being by Improving Patient Memory: Transdiagnostic Sleep and Circadian Treatment

Inclusion criteria:

1. Aged 50 years and older;
2. English language fluency;
3. Experiencing a mobility impairment;
4. Low income;
5. Exhibit a sleep or circadian disturbance as determined by endorsing 4 "quite a bit" or 5 "very much" (or the equivalent for reverse scored items) on one or more PROMIS-SD questions.
6. 25-30 on the Montreal Cognitive Assessment, as a negative screen for cognitive impairment.
7. Able/willing to give informed consent.

Exclusion criteria:

1. Severe untreated sleep disordered breathing (AHI>30) or moderate untreated sleep disordered breathing with severe daytime sleepiness (AHI of 15-30 and Epworth Sleepiness Scale >10);
2. Medical conditions that prevent a participant from comprehending and following the basic tenants of treatment (e.g., dementia) or that interfere with sleep in a manner that can't be addressed by a cognitive behavioral treatment (e.g., the Structured Clinical Interview for Sleep Disorders will be used to screen for narcolepsy, REM sleep behavior disorder) or that may preclude full participation (e.g., receipt of end of life care);
3. Homelessness;
4. Night shift work >2 nights per week in the past 3 months;
5. Substance abuse/dependence only if it makes participation in the study unfeasible;
6. Suicide risk sufficient to preclude treatment on an outpatient basis.