Guided Eight-week Online Acceptance and Commitment Therapy for Distressed Family Caregivers of People With Dementia

Inclusion Criteria: * community-dwelling adults (age 18 or over) who are currently taking the primary responsibility for the care of a relative with dementia living in the community * devoting at least four hours daily to the care of the relative with dementia * having at least mild symptoms of psychological distress as measured by the Depression, Anxiety and Stress Scale (DASS-21; Antony et al., 1988) * having a computer or a smartphone with the internet access at home and * being able to provide informed consent. Exclusion Criteria: * having cognitive, physical, or sensory deficits or language barriers (non-English communicator) that impede study participation * currently receiving a psychological therapy * having a prior experience in ACT * having psychiatric hospitalizations or diagnoses of mental illness in the previous two years * taking antipsychotic or anticonvulsant medication at the time of recruitment * considering or planning to place family members of PwD in a nursing home within four months or * having the possibility of study dropouts due to other medical conditions of family members with dementia (e.g., conditions that may impede study participation due to frequent hospitalization or death)