Objectives: Quality of life among Hong Kong's family dementia caregivers is a current heightened public health concern. This was one of the first East Asian studies to examine the role of family expressed emotion (EE) in the negative caregiver outcomes associated with dementia caregiving. EE comprises overinvolved and critical communications in families of people with mental illness. In this research, caregiver EE was evaluated as a mediator of the relationship between behavioral and psychological problems associated with dementia (BPSD) and negative caregiver outcomes.