(1) International Statistical Classification of Illness and related Health Problems.   Volume 10 (ICD 10).   The World Health Organisation.   Geneva: 1992-1994.

(2) Mental Health Act 1983.   London: Her Majesty's Stationary Office.

(3) The "Consentiam" effect: Are your joint ratings really independent?   Robinson M, Cookson I and White K.   1982.   British Journal of Medical Psychology, volume 55, pages 285-286.

(4) Pathogenesis of schizophrenia: a psychopathological perspective.   Cunningham Owens DG, Miller P, Lawrie SM and Johnstone EC.   2005.   British Journal of Psychiatry, volume 186, pages 386-393.

(5) Neuropsychological impairments in people with schizophrenia or bipolar disorder and their unaffected relatives.   McIntosh AM, Harrison LK, Forrester K, Lawrie SM and Johnstone EC.   2005.   British Journal of Psychiatry, volume 186, pages 378-385.

(6) Regional volume deviations of brain structure in schizophrenia and psychotic bipolar disorder.   McDonald C, Bullmore E, Sham P, Chitnis X, Suckling J, MacCabe J, Walshe M and Murray RM.   2005.   British Journal of Psychiatry, volume 186, pages 369-377.

(7) The neuropathology of primary mood disorder.   Harrison PJ.   2002.   Brain, volume 125, pages 1428-1449.

(8) A proposed mechanism of emotion.   Papez JW.   1937.   Archives of Neurology and Psychiatry, volume 38, pages 725-743.

(9) The genetical evolution of social behaviour, 1 and 2.   Hamilton WD.   1964.   Journal of Theoretical Biology, volume 7, pages 1-52.

(10) Is your "double-blind" design truly double-blind?   Oxtoby A, Jones A and Robinson M.   1989.   British Journal of Psychiatry, volume 155, pages 700-701.