"Rationality: Contexts and Constraints" is an interdisciplinary reappraisal of the nature of rationality. In method, it is pluralistic, drawing upon the analytic approaches of philosophy, linguistics, neuroscience, and more. These methods guide exploration of the intersection between traditional scholarship and cutting-edge philosophical or scientific research. In this way, the book contributes to development of a suitably revised, comprehensive understanding of rationality, one that befits the 21st century, one that is adequately informed by recent investigations of science, pathology, non-human thought, emotion, (...) and even enigmatic Chinese texts that might previously have seemed to be expressions of irrationalism. Addresses recent challenges and Identifies a direction for future research on rationalityInvestigates the relationship between rationality and mental disorders, such as delusion and depressionAssesses reasoning in artificial intelligence and nonhuman animalsReflects on ancient Chinese Philosophy and possible cultural differences in human psychology Employs philosophical reflection, along with linguistic, probabilistic, and logical techniques. (shrink)

How many factors, i.e. departures from normality, are necessary to explain a delusion? Maher’s classic one-factor theory argues that the only factor is the patient’s anomalous experience, and a delusion arises as a normal explanation of this experience. The more recent two-factor theory, on the other hand, contends that a second factor is also needed, with reasoning abnormality being a potential candidate, and a delusion arises as an abnormal explanation of the anomalous experience. In the past few years, although there (...) has been an increasing number of scholars offering a variety of arguments in defence of Maher’s one-factor theory, these arguments have not been adequately addressed by two-factor theorists. This paper aims to address this gap by critically examining the arguments on three crucial issues: the intelligibility of delusions, the dissociation between anomalous experiences and delusions, and the empirical evidence of a second factor. I will argue that the Maherian notion of anomalous experience is not sufficient for explaining delusions and the two-factor theory is on the right track in its search for the missing factor in the aetiology of delusions. (shrink)

Nietzsche’s cardinal ideas - God is Dead, Übermensch and Eternal Return of the Same - are approached here from the perspective of psychiatric phenomenology rather than that of philosophy. A revised diagnosis of the philosopher’s mental illness as manic-depressive psychosis forms the premise for discussion. Nietzsche conceived the above thoughts in close proximity to his first manic psychotic episode, in the summer of 1881, while staying in Sils-Maria (Swiss Alps). It was the anniversary of his father’s death, and also of (...) the break-up of his friendship with Wagner, the most important relationship in his life. Despite having been acquainted with these ideas from reading philosophy and literature, Nietzsche created them de novo and imbued them with very personal meaning. Surprisingly, he never defined or explained his cardinal thoughts in his published writings, perhaps because rationally he could not. A resultant hermeneutic vacuum provoked an avalanche of interpretations in secondary literature. But could these ideas be delusions? A current definition of delusion is challenged, and an attempt is made at a limited comparison between delusion, scientific/philosophical doctrine and poetic creation. It is also argued that psychosis is a way of re-living trauma, and delusions can therefore be seen as a form of reasoning that helps to make sense of the world in a state of psychotic disintegration. Far from being false beliefs, delusions are a true expression of one’s innermost feelings and pain, albeit indirectly. The relationship between early parental loss and repeated trauma, psychosis and creativity is also explored. Indo-Pacific Journal of Phenomenology , Volume 8, Edition 1 May 2008. (shrink)