As part of this series, Martin Davies (Wilde Professor of Mental Philosophy at the University of Oxford and a Fellow of Corpus Christi College) kindly agreed to answer some questions about delusions. The interview will be published in three parts.
LB: Thank you for helping us launch PERFECT! When you started working on delusions, philosophical literature on the topic was scarce. Why did you find delusions interesting to start with?
MKD: Congratulations, Lisa, on the launch of your new research project, supported by an ERC Consolidator Grant of nearly two million euros! Perfect, indeed. And thank you for the opportunity to answer some questions on your blog.
I started to learn about delusions in the early 1990s from talks that Andy Young (now Professor of Neuropsychology at the University of York) gave at early meetings of the European Society for Philosophy and Psychology.
The phenomenology and the theories were of evident interest to philosophers and psychologists and Tony Stone (a philosopher) joined with Andy Young to write a seminal interdisciplinary paper about monothematic and circumscribed delusions following brain injury (Stone and Young, 1997). My first paper on delusions was a long editorial introduction, written with Max Coltheart, for a special issue of Mind & Language, reprinted as Pathologies of Belief. Our discussion was organised around two questions: (1) Can the delusional idea or hypothesis be understood as arising in a folk psychologically intelligible way from the subject’s experience? (2) Why is that hypothesis adopted and maintained as a belief despite its utter implausibility and the uniform scepticism with which other people greet it?