Revising Carnap’s Semantic Conception of Modality

I provide a tableau system and completeness proof for a revised version of Carnap??s semantics for quantified modal logic. For Carnap, a sentence is possible if it is true in some first order model. However, in a similar fashion to second order logic, no sound and complete proof theory can be provided for this semantics. This factor contributed to the ultimate disappearance of Carnapian modal logic from contemporary philosophical discussion. The proof theory I discuss comes close to Carnap??s semantic vision and provides an interesting counterpoint to mainstream approaches to modal logic. Despite its historical origins, my intention is to demonstrate that this approach to modal logic is worthy of contemporary attention and that current debate is the poorer for its absence.     

When your face doesn't fit: employment discrimination against people with facial disfigurements

This study aimed to investigate the recruitment prospects of people with facial disfigurement and a contrasting group of wheelchair users, representing a functional impairment with little aesthetic impact. Three applications were made to each of 144 vacancies using three CVs and cover letters rotated around conditions in which one applicant was described as a wheelchair user, another had a noncontagious facial disfigurement, and the third (control condition) had neither. There was evidence of discrimination against people with facial disfigurement in jobs requiring high (but not low) levels of customer contact, and against wheelchair users for jobs entailing high or low‐customer contact. Aesthetic considerations, social norms, and the possibility of stigma by association are discussed as potential underlying factors.     

Immersive virtual reality as a rehabilitative technology for phantom limb experience: a protocol.

This paper describes a study protocol to investigate the use of immersive virtual reality as a treatment for amputees' phantom limb pain. This work builds upon prior research using mirror box therapy to induce vivid sensations of movement originating from the muscles and joints of amputees' phantom limbs. The present project transposes movements of amputees' anatomical limbs into movements of a virtual limb presented in the phenomenal space of their phantom limb. It is anticipated that the protocol described here will help reduce phantom limb pain.     

The Metaphysics of Causal Models

This paper presents an attempt to integrate theories of causal processes—of the kind developed by Wesley Salmon and Phil Dowe—into a theory of causal models using Bayesian networks. We suggest that arcs in causal models must correspond to possible causal processes. Moreover, we suggest that when processes are rendered physically impossible by what occurs on distinct paths, the original model must be restricted by removing the relevant arc. These two techniques suffice to explain cases of late pre?mption and other cases that have proved problematic for causal models.

Terrorism as technology: A discussion of the theoretical underpinnings

Conclusion This short article is intended as a brief discussion of the concept of terrorism as technology, and the impact of military thinking about new threat models on the theoretical analysis of terrorism. Many of the concepts developed in discussions of the RMA seem tailor-made to terrorism. Indeed, terrorism in its conventional, political form was one of the new threats that the RMA has been applied to. However, the thesis of this article is that the new form of terrorism that debuted so spectacularly on September 11 can also be theoretically analyzed within the prism of the RMA. Toby Blyth, BA (Japanese)/LLB (Western Australia), Solicitor - Supreme Court of England and Wales, Supreme Court of New South Wales, Federal and High Courts of Australia, ANZIIF (Fellow). The opinions and conclusions contained herein are solely those of the author and do not reflect policy, institutional opinion, or proprietary information of his employer. This paper is based in part on research carried out by the author for and on a paper published in 1999 by the Terrorism Research Centre, Inc.     

Counterlegals and Necessary Laws

Necessitarian accounts of the laws of nature meet an apparent difficulty: for them, counterlegal conditionals, despite appearing to be substantive, seem to come out as vacuous. I argue that the necessitarian may use the presuppositions of counterlegal discourse to explain this. If the typical presupposition that necessitarianism is false is made explicit in counterlegal utterances, we obtain sentences such as 'If it turns out that the laws of nature are contingent, then if the laws had been otherwise, then such and such would have been the case', which are non-vacuous and very often true. This goes a long way towards resolving the difficulty for necessitarianism.     

Empowerment, Performance, and Operational Uncertainty: A Theoretical Integration

L'accession au pouvoir est présentée comme une recette universelle pour améliorer la performance au travail. On défend ici l'idée qu'il existe déjà des arguments forts pour penser que cette conviction est des plus discutables, et que l'impact de la participation dépendra du degré de l'incertitude opérationnelle qui prévaut. Notre point de vue s'appuie sur une analyse des idées qui émergent conjointement de cinq domaines, à savoir les théories des organisations, la structuration du travail, le management "zéro défaut", le management des facteurs humains et celui des ressources humaines. On met en évidence les conséquences théoriques et pratiques de nos investigations et certaines des pistes à suivre pour approfondir la réflexion.
Empowerment is being promoted as a general recipe for enhancing work performance. We argue that there are already strong grounds for suggesting that this universalistic assumption is flawed, and that the effectiveness of empowerment practices will be contingent on the degree of operational uncertainty that prevails. This argument is supported by an analysis of ideas in common emerging from five different areas of inquiry, namely those concerned with organisational theory, work design, total quality management, human factors, and human resource management. We identify the theoretical and practical implications of our analysis, and some of the lines of investigation required to develop the ideas further.     

Independent effects of colour on object identification and memory

We examined the effects of colour on object identification and memory using a study-test priming procedure with a coloured-object decision task at test (i.e., deciding whether an object is correctly coloured). Objects were selected to have a single associated colour and were either correctly or incorrectly coloured. In addition, object shape and colour were either spatially integrated (i.e., colour fell on the object surface) or spatially separated (i.e., colour formed the background to the object). Transforming the colour of an object from study to test (e.g., from a yellow banana to a purple banana) reduced priming of response times, as compared to when the object was untransformed. This utilization of colour information in object memory was not contingent upon colour falling on the object surface or whether the resulting configuration was of a correctly or incorrectly coloured object. In addition, we observed independent effects of colour on response times, whereby coloured-object decisions were more efficient for correctly than for incorrectly coloured objects but only when colour fell on the object surface. These findings provide evidence for two distinct mechanisms of shape-colour binding in object processing.     

The computerized continuous performance task: A new measure of inattention

Attentional performance was measured using a computerized continuous performance task, several psychometric tasks, and ratings of classroom behavior. Subjects were 51 children in the inpatient and day hospital programs of a psychiatric hospital. The relationship between performance on the computerized task and all other measures was examined. Results indicated that the continuous performance task significantly correlated with several other psychometric measures of inattention, ratings of inattention, impulsivity, and hyperactivity. The CPT had slightly better sensitivity and the same specificity as the Conners Teacher Rating Scale in identifying Conduct and Attention Deficit Disordered children. Implications for the use of the computerized continuous performance task as a screening measure for attentional difficulties is discussed.