Dr. Angell conducts research on mental health services for people with serious mental illnesses, particularly on issues of engagement in and adherence to treatment. Her past and current studies in this area have examined how legal and informal strategies are used to promote treatment adherence, as well as the role of the consumer-provider relationship and consumer self-determination in that process. In other completed work, she has conducted studies related to police interactions, stigma, and social networks in relation to people with serious mental illness.