A Behavioural Sleep Intervention for People With Mild Cognitive Impairment and Mild Dementia

Inclusion Criteria: * diagnosis of mild cognitive impairment or dementia with the global deterioration scale (GDS) score at 4 or lower; endorse one or more sleep problems; experience sleep issues an average of 3 or more nights per week over the past month; reachable by phone; ability to provide informed consent and willingness to participate in the study. Exclusion Criteria: * have a prior diagnosis of a primary sleep disorder (e.g., sleep apnoea); have a severe chronic illness that may cause sleep problems (e.g., emphysema); currently receiving medical, psychological, or psychiatric treatment for sleep disturbance or depression; severe visual or hearing impairment; uncontrolled medical conditions that may interfere with participation.