The present work is substantially a dissertation presented to the Faculty of the Graduate School of the University of Toronto. While aware of the numerous imperfections of the work I have decided, on the urging of many colleagues, to publish it at this time because of the current relevance of the subject-matter and especially of the collection of texts. I am happy to acknowledge my indebtedness to the faculty of the Pontifical Mediaeval Institute of Toronto and especially to the Reverend (...) Ignatius Eschmann, O.P., who first suggested the idea of this study and whose encouragement and assistance brought it to completion. My thanks are due also to the Reverend George Klubertanz, S.J., and Mr. Paul Mathews, both of the Department of Philosophy of Saint Louis University, and" for invaluable secretarial assistance, to Mrs. Savina Tonella and Miss Agnes Kutz. R. J. HENLE, S.j. Saint Louis December, 1954 TABLE OF CONTENTS GENERAL INTRODUCTION... (shrink)

THE MAIN THESIS OF THIS STUDY may be summarized as follows: In Schopenhauer's earliest work, The Fourfold Root of the Principle of Sufficient Reason, two different lines of philosophical thought can be identified, each arising from a different source. The first of these is the a priori Kantianism and idealism heavily emphasizing the function of the a priori principle of causality, and the forms of time and space. This line comes from Schopenhauer's study of Kantianism. The second line of thought (...) consists of an implicitly realistic analysis of perception which seems to arise from Schopenhauer's personal reflection on perceptual experience. This experiential analysis seems to be partially due to his medical studies, as his use of medical rather than philosophical authorities indicates. This realistically oriented element can be extricated from the totality of Schopenhauer's philosophy with the result that it can furnish new insights valuable for the understanding and confirmation of philosophical direct realism. (shrink)

INTRODUCTION An effort has been made to collect and list in this Part One every text from the works of Saint Thomas in which the terms 'Plato' or..

This book is available either individually, or as part of the specially-priced Arguments of the Philosphers Collection.

Psychopaths continue to be demonised by the media and estimates suggest that a disturbing percentage of the population has psychopathic tendencies. This timely and controversial new book summarises what we already know about psychopathy and antisocial behavior and puts forward a new case for its cause - with far-reaching implications. Presents the scientific facts of psychopathy and antisocial behavior. Addresses key questions, such as: What is psychopathy? Are there psychopaths amongst us? What is wrong with psychopaths? Is psychopathy due to (...) nature or nurture? And can we treat psychopaths? Reveals the authors' ground-breaking research into whether an underlying abnormality in brain development leaves psychopaths with an inability to feel emotion or fear. The resulting theory could lead to early diagnosis and revolutionize the way society, the media and the state both views and contends with the psychopaths in our midst. (shrink)

Empathy is a lay term that is becoming increasingly viewed as a unitary function within the field of cognitive neuroscience. In this paper, a selective review of the empathy literature is provided. It is argued from this literature that empathy is not a unitary system but rather a loose collection of partially dissociable neurocognitive systems. In particular, three main divisions can be made: cognitive empathy , motor empathy, and emotional empathy. The two main psychiatric disorders associated with empathic dysfunction are (...) considered: autism and psychopathy. It is argued that individuals with autism show difficulties with cognitive and motor empathy but less clear difficulties with respect to emotional empathy. In contrast, individuals with psychopathy show clear difficulties with a specific form of emotional empathy but no indications of impairment with cognitive and motor empathy. (shrink)

Political liberals ask citizens not to appeal to certain considerations, including religious and philosophical convictions, in political deliberation. We argue that political liberals must include a demanding requirement of intellectual modesty in their ideal of citizenship in order to motivate this deliberative restraint. The requirement calls on each citizen to believe that the best reasoners disagree about the considerations that she is barred from appealing to. Along the way, we clarify how requirements of intellectual modesty relate to moral reasons for (...) deliberative restraint. And we argue against attempts to weaken our requirement of intellectual modesty by emphasizing those moral reasons. (shrink)

This study investigated the performance of boys with psychopathic tendencies and comparison boys, aged 9 to 17 years, on two tasks believed to be sensitive to amygdala and orbitofrontal cortex func- tioning. Fifty-one boys were divided into two groups according to the Psychopathy Screening Device (PSD, P. J. Frick & R. D. Hare, in press) and presented with two tasks. The tasks were the gambling task (A. Bechara, A. R. Damasio, H. Damasio, & S. W. Anderson, 1994) and the Intradimensional/ (...) Extradimensional (ID/ED) shift task (R. Dias, T. W. Robbins, & A. C. Roberts, 1996). The boys with psychopathic tendencies showed impaired performance on the gambling task. However, there were no group differences on the ID/ED task either for response reversal or extradimensional set shifting. The implications of these results for models of psychopathy are discussed. (shrink)

This study investigates the ability of individuals with psychopathy to perform passive avoidance learning and whether this ability is modulated by level of reinforcement/punishment. Nineteen psychopathic and 21 comparison individuals, as defined by the Hare Psychopathy Checklist Revised (Hare, 1991), were given a passive avoidance task with a graded reinforcement schedule. Response to each rewarding number gained a point reward specific to that number (i.e., 1, 700, 1400 or 2000 points). Response to each punishing number lost a point punishment specific (...) to that number (i.e., the loss of 1, 700, 1400 or 2000 points). In line with predictions, individuals with psychopathy made more passive avoidance errors than the comparison individuals. In addition, while the performance of both groups was modulated by level of reward, only the performance of the comparison population was modulated by level of punishment. The results are interpreted with reference to a computational account of the emotional learning impairment in individuals with psychopathy. (shrink)