A psychiatric assessment is an evaluation performed to determine if there is evidence of mental illness. Often as a result of a psychiatric assessment, a diagnosis is given. The assessment often includes face-to-face evaluation, review of collateral sources, and may include testing. In addition, when done in a treatment context (which has a different set of ethics), a psychiatrist performs an evaluation for the purposes of providing treatment to the individual requesting help. As a forensic psychiatrist, the psychiatric assessment is done to answer a specific legal question in a legal context. As an expert witness (vs. a correctional treatment role for forensic psychiatry), the purpose of a psychiatric assessment is not to provide treatment, but to reach an opinion that may be helpful to the court (or other interested party).