Prof. Peter Menzies: principal supervisor from the second half of the first year until thesis submission. I would like to thank Prof. Peter Menzies for his excellent supervision, for asking me the hard questions, and for persuading me to pursue challenges I would have otherwise avoided. I would also like to thank him for his personal support during my treatment for cancer.Dr. Mitch Parsell: principal supervisor for the first six months, and associate supervisor for the remainder of my candidature. I would like to thank Dr. Mitch Parsell for being there for my entire candidature, for always being supportive, encouraging and generous with his time. I would also like to thank him for being a friend when times were challenging.Dr. Robert Sinnerbrink: associate supervisor for the first six months of my candidature. I would like to thank Dr. Robert Sinnerbrink for his support, and for generously reading relevant section of the original German edition of Jaspers' General Psychopathology, and for helping me clarify Jaspers' concepts.Prof. Jeanette Kennett: associate supervisor from the second year of my candidature to submission. I would like to thank Prof. Jeanette Kennett for her advice, her friendly support, and for her reassurance in my moments of doubt.I would also like to express my appreciation to the following academics for their generosity in spending time advising me in an un-official capacity.Dr. Lisa Bortolotti: I would like to thank Dr. Lisa Bortolotti for regularly meeting with me and my principal supervisor during her three months sabbatical at Macquarie University, during the first year of my candidature. Her advice in the early stages of my candidature was extremely valuable.x Assoc. Prof. Robyn Langdon: I would like to thank Assoc. Prof. Robyn Langdon for meeting with me and with my supervisors, and for offering invaluable advice on the cognitive science aspects of my thesis. I would also like to thank her for reading and commenting on several drafts of Chapter 6. She has continued to be encouraging and supportive, and always generous with her time. Prof. Max Coltheart: I would like to thank Prof. Max Coltheart for inviting me to join the Australian Research Council of Excellence in Cognition and its Disorders (CCD) Belief Group at Macquarie University, and for his patience in answering my many questions. I would also like to thank all members of the CCD Belief Group for their regular stimulating and informative discussions, without which this thesis could not have been written in its present form. 1 Revision Washington, DC: American Psychiatric Association, 2000, pxxx "It is something of as fantasy, to use Dennett's term, to suggest that neuroscience or psychology are best done by averaging out, reducing, and re-engineering first-person data so that it looks like third-person data."