This chapter describes the integration of psychological assessments into the psychiatric report and identifies ways to address inconsistent testing results from collateral sources. It begins with a brief discussion of the advantages and limitations of psychological testing and what should be expected from a psychological evaluation and report. The chapter then considers the advantages of different methods of including psychological assessments in psychiatric reports. Three issues that are common in forensic psychiatry in particular and in psychiatry in general cannot be answered by psychological testing: the etiology of the deficit, the veracity of the client's account, and the cause of a specific behavior in the past. On request by a psychiatrist, psychological testing is done by a psychologist who generates an independent signed report. Like diagnoses, psychological testing results create the psychiatric framework through which behaviors can be organized and explained.