The initial phase of the research, Stage I, focuses on the development and evaluation of the telepsychiatry link between Parkhurst Prison and Ravenswood House. This includes an inter-rater reliability study of prisoner interviews to compare ratings of psychopathology using the Comprehensive Psychopathology Rating Scale (Asberg et al,1978) recorded simultaneously by two researchers one interviewing over the AV link, whilst the other is in the room with the patient at Parkhurst Prison, observes the patient directly.