Dr. Charlotte Gerth Haanen has worked in the field of psychology with a variety of populations, including children, adolescents, and adults. This has involved work with at risk and adjudicated adolescents, children with emotional and behavioral disorders, adults with serious and persistent mental illness, and both adults and children with developmental disabilities. Services provided have included individual and group therapy, testing, and clinical assessments. Dr. Gerth Haanen has worked for the Minnesota Department of Corrections as a psychologist since 2005. This began in a maximum-security prison completing forensic and neuropsychological assessments for the mental health unit and included providing expert testimony on a regular basis for civil commitments as mentally ill and also mentally ill and dangerous. Dr. Gerth Haanen worked at the state’s only female prison facility providing mental health and chemical dependency assessments along with group and individual counseling and crisis intervention. Neuropsychological evaluations as well as staff training regarding traumatic brain injury were recently conducted at a close custody facility as part of a federal grant. She is currently employed at a medium custody facility completing psychosexual assessments and making treatment recommendations for a sex offender treatment program. She has also worked as an adjunct professor for online educational programs since 2007.