Semantic foundations for conditional permission

Conclusion The principal aim of the present paper has been the presentation of a semantical foundation for an important species of deontic logic (viz., the conditional variety). This semantical approach to the problem is essentially new and has the advantage of providing a complex of conceptual machinery by means of which this branch of applied logic can be placed upon a more rigorous and solid foundation. Above all, it makes available a logically rigorous criterion of acceptability for deontic principles by means of which questions in this sphere can be treated and resolved upon other than intuitive grounds.     

On ‘there is’

Philosophical Studies -     

Measuring the impact of informal caring

A factor-analysis of caregiving impact appraisals amongst a community-derived sample of informal carers of elderly people revealed two negative (care work strain and relationship dissatisfaction) and two positive (care work satisfaction and care lifestyle satisfaction) scales. Validity was assessed by means of concurrent correlations with levels of assistance with daily living tasks provided by carers and levels of behaviour problems exhibited by elderly dependents. Criterion validity was considered in relation to two important carer outcomes; willingness to care and a standardized measure of strain. Each of the four scales was significantly associated with concurrently assessed willingness to care. Care work strain and relationship dissatisfaction were associated with concurrently measured strain symptomology. Evidence of 6-month predictive validity was obtained for the care work strain scale.     

A logic of intentions and beliefs

Intentions are an important concept in Artificial Intelligence and Cognitive Science. We present a formal theory of intentions and beliefs based on Discourse Representation Theory that captures many of their important logical properties. Unlike possible worlds approaches, this theory does not assume that agents are perfect reasoners, and gives a realistic view of their internal architecture; unlike most representational approaches, it has anobjective semantics, and does not rely on anad hoc labeling of the internal states of agents. We describe a minimal logic for intentions and beliefs that is sound and complete relative to our semantics. We discuss several additional axioms, and the constraints on the models that validate them.     

The role of compliance in hypnotic and nonhypnotic analgesia

We modified the standard procedure for administering finger pressure pain in order to assess the extent to which subjects biased their reports of pain reduction when exposed to compliance-inducing instructions. Experiment 1 used only highly hypnotizable subjects and found that compliance-induced reductions in reported pain were about half as large as the reported reductions produced by hypnotic analgesia suggestions. Experiment 2 used low as well as high hypnotizables and administered hypnotic or nonhypnotic analgesia instructions and compliance instructions to the same subjects on separate pain trials. Reported pain reductions produced by hypnotic and nonhypnotic analgesia suggestions and those produced by compliance instructions were substantially and significantly correlated. Furthermore, hypnotizability correlated with compliance-induced reported pain reductions as highly as it correlated with the reported reductions produced by hypnotic analgesia suggestions. Among high hypnotizables (but not low hypnotizables) compliant responding was predicted by social desirability. The findings of both studies indicate that compliance strongly influences the reports of hypnotic and nonhypnotic analgesia proffered by high hypnotizables. The role of compliance in the pain reductions reported by low hypnotizables is less clear-cut.     

Shrinkage estimation of linear combinations of true scores

This paper is concerned with combining observed scores from sections of tests. It is demonstrated that in the presence of population information a linear combination of true scores can be estimated more efficiently than by the same linear combination of the observed scores. Three criteria for optimality are discussed, but they yield the same solution which can be described and motivated as a multivariate shrinkage estimator.Input from Eric Bradlow, Charles Lewis, and Linda Zeger is acknowledged. Research for this paper was funded by the Program Research Council (ETS). Suggestions of the Editor and of anonymous referees were instrumental in several improvements of the paper.     

Bain on Neural Networks

In his bookMind and body(1873), Bain set out an account in which he related the processes of associative memory to the distribution of activity in neural groupings—or neural networks as they are now termed. In the course of this account, Bain anticipated certain aspects of connectionist ideas that are normally attributed to 20th-century authors—most notably Hebb (1949). In this paper we reproduce Bain's arguments relating neural activity to the workings of associative memory which include an early version of the principles enshrined in Hebb's neurophysiological postulate. Nonetheless, despite their prescience, these specific contributions to the connectionist case have been almost entirely ignored. Eventually, Bain came to doubt the practicality of his own arguments and, in so doing, he seems to have ensured that his ideas concerning neural groupings exerted little or no influence on the subsequent course of theorizing in this area.     

SENSATION,INTENTIONALITY, AND ANIMAL CONSCIOUSNESS: MALEBRANCHE'S THEORY OF THE MIND

In general, seventeenth-century philosophers seem to have assumed that intentionality is an essential characteristic of our mental life. Malebranche is perhaps the only philosopher in the period who stands out clearly against the prevailing orthodoxy; he is committed to the thesis that there is a large class of mental items - sensations - which have no representational content. In this paper I argue that due attention to this fact makes it possible to mount at least a partial defence of his notorious doctrine of ‘the rainbow-coloured soul’; Malebranche's doctrine is a striking anticipation of modern adverbial theories of sensation. I then argue that failure to appreciate the non-intentional character of sensations for Malebranche vitiates one recent attempt to explain why he accepted the Cartesian doctrine of the beastmachine; in contrast to the Radners, I suggest that Malebranche has the philosophical resources to offer an interesting theory of animal consciousness, and that his failure to develop such a theory rests largely on his acceptance of certain theological arguments. The paper ends by speculating about how Malebranche's theological commitments may have encouraged him to adopt the philosophically important thesis that intentionality is not the mark of the mental.     

CHOICES FROM IDENTICAL OPTIONS

Abstract— Many of the decisions that people must make involve selections from arrays of identical options The studies presented explored people's preferences in two contexts choosing one Item from rows of identical items and choosing a route from a series of identical routes The first three studies examined preferences for items in particular positions Whether people were choosing a product from a grocery shelf, deciding which bathroom stall to use, or marking a box on a questionnaire, they avoided the ends and tended to make their selection from the middle For example, when there were four rows of a product in the supermarket, only 29% of the purchases were from the first and last rows, and 71% were from the middle two The last three studies examined whether a similar preference exists in picking a route when all of the available routes are the same length and require same number of turns In solving mazes, planning routes on maps, and walking around campus, people showed the pattern opposite to that found for choosing Items in rows They avoided the middle routes and tended to take either the first or the last one Overall, the last available route was the favorite The notion that these behaviors may minimize mental effort is explored