 INFORMED CONSENT Only patients who are able to give informed consent, ie. Able to demonstrate an understanding of the objectives of the study and the implications of their role in it, will be recruited into the study. Patients who are extremely psychotic or disturbed will not be approached to enter the study. Involuntary patients who are able to give informed consent will be able to participate and where possible a guardian or relative will be contacted and notified of the patients involvement. Patients will be advised that their participation is voluntary and that they are free to withdraw from the study at any stage 