We extend results of Harizanov and Barker. For a relation R on a recursive structure /oA, we give conditions guaranteeing that the image of R in a recursive copy of /oA can be made to have arbitrary ∑α0 degree over Δα0. We give stronger conditions under which the image of R can be made ∑α0 degree as well. The degrees over Δα0 can be replaced by certain more general classes. We also generalize the Friedberg-Muchnik Theorem, giving conditions on a pair (...) of relations R and S under which the images of R and S can be made ∑α0 and independent over Δα0 in a recursive copy of /oA. (shrink)

Let be a recursive structure, and let R be a recursive relation on . Harizanov isolated a syntactical condition which is necessary and sufficient for to have recursive copies in which the image of R is r.e. of arbitrary r.e. degree. We had conjectured that a certain extension of Harizanov's syntactical condition would be necessary and sufficient for to have recursive copies in which the image of R is ∑α0 of arbitrary ∑α0 degree, but this is not the case. Here (...) we give examples illustrating some restrictions on the possible ∑α0 degrees. In these examples, the image of R cannot be ∑α0 of degree d unless d possesses an “α-table”. (shrink)

Two notions from philosophical logic and linguistics are brought together and applied to the psychological study of defeasible conditional reasoning. The distinction between disabling conditions and alternative causes is shown to be a special case of Pollock's (1987) distinction between ‘rebutting' and ‘undercutting' defeaters. ‘Inferential' conditionals are shown to come in two types, one that is sensitive to rebutters, the other to undercutters. It is thus predicted and demonstrated in two experiments that the type of inferential conditional used as the (...) major premise of conditional arguments can reverse the heretofore classic, distinctive effects of defeaters. (shrink)

Claparède′s report of a case of amnesic syndrome is an early example of the cognitive neuropsychology paradigm, by which studies of brain-damaged patients are used to shed light on the nature of normal mental processes. The case illustrates the selective impairment of episodic memory, with procedural and semantic memory remaining intact. Moreover, the several demonstrations of preserved learning during amnesia comprise an early illustration of the dissociation between explicit and implict memory. However, its greatest contemporary relevance is for theories of (...) conscious recollection. Claparède underscored the role of the self, viewed as a knowledge structure, in conscious mental life, and he drew attention to three different modes of recognition: remembering, inferring, and knowing. (shrink)

Orthodox bioethics is distinctive in how it reflects on issues in bioethics. This distinctiveness is found in the relationship of spirituality and liturgy to ethics. Eber's essay, however, treats the distinctiveness as absolute uniqueness. In so focusing on the incommensurability of Orthodox bioethics Eber fails to tell his reader what Orthodox bioethics is about. Furthermore, his description of Western Christian ethics is seriously inaccurate.

In prevention and health promotion interventions, screening methods and risk profile assessments are often used as tools for establishing the interventions’ effectiveness, for the selection and determination of the health status of participants. The role these instruments fulfil in the creation of effectiveness and the effects these instruments have themselves remain unexplored. In this paper, we have analysed the role screening methods and risk profile assessments fulfil as part of prevention and health promotion programmes in the selection, enrolment and participation (...) of participants. Our analysis showed, that screening methods and health risk assessments create effects as they objectify health risks and/or the health status of individuals, i.e., they select the individuals ‘at risk’ and indicate the lifestyle modifications these people are required to make in order to improve their health. Yet, these instruments also reduce the group of participants thereby decreasing the possible effect of interventions, as they provide the legitimisation for people to make choices to whether they enrol or not and what lifestyle changes they incorporate into their lives. In other words, they present a space of interaction, in which agency is distributed across the practice nurses, the participants and the instruments. Decisions were not just made upon the projection of the outcomes of these instruments; decisions that were made by both the patients and practice nurses were the resultant of their opinions on these outcomes that were formed in interaction with the instruments. (shrink)

Written in debate format, this book covers developing fields such as social cognition, as well as classic areas such as memory, learning, perception and categorization. The links between emotion and memory, learning, perception, categorization, social judgements, and behavior are addressed.

The author maintains that "man’s chief purpose in life consists in wanting to know the truth and to experience the real." But in the tradition of Kant and recent continental philosophy, he claims that one can know the real only as constituted by the mind, not as it is in itself. Rauche goes on to conclude, that all truths are perspectival and that the Truth can never be known—though it remains our highest aspiration. The perspectival character of truth is the (...) foundation upon which Rauche develops his position. He claims that truths, as perspectives, are in controversial relations to one another which state of affairs he calls a multiple of broken logos and which reveal a natural reference within the permanent state of crisis of human truth. Rauche puts it as follows: "... if man and his fellowman strive towards the Truth earnestly, they must accept each other’s truths as being complementary to each other." At this point men will become conscious of the fact that they are referred to one another. Thus the controversial relations of man’s truths are a permanent crisis which is the source both of individuality and of community. The experience of the permanent crisis of truths competing with one another is what Rauche means by "actuality." The positive acceptance of the permanent crisis of human truth is the empirical basis of the moral ought. Since human truths are complementary and refer to each other, it is "in their mutual willingness to respect each other’s claims and to see their existential needs and interests in the light of those of the other that [men] may be said to lead an ethical existence." The empirical ground of the moral ought is then seen to be the controversial relation existing between human truths. Rauche rejects in principle any attempt to constitute a theoretical ethics on a rationally conceived principle. Since the moral ought is grounded in the controversial relation existing between human truths, moral principles can be experienced only in our dealings with our fellow man, e.g., in the family and society—wherever the relationship of I-Thou is found. In effect, as in the case of truth, the moral ought appears in the field of actuality; and the crisis in truth is revealed as an ethical ground. The same permanent crisis which is the ground of truth and of the moral ought is regarded by Rauche as the basis of reality. Truth, moral existence, and reality are all conjoined in actuality. The permanent crisis of human truths is an empirical limit which has logical, epistemological, ethical and metaphysical significance. And, Rauche concludes, "... it becomes clear that man’s real existence can never be derived from a rationally conceived essence, but that essence is the way in which man realizes himself by projecting himself into his environment from the peculiar situation in which he happens to find himself, and which induces him to constitute the world in controversy with his fellowman." This is a tightly argued book and Rauche remains consistent with his assumptions throughout. One wishes, however, that the author would examine some of his assumptions. One looks in vain for a single argument which establishes that, e.g., the Truth which is unknowable and yet is the indispensable point to which men strive does in fact exist. If it does not, and Rauche has given us no reason to believe otherwise, then the basis of complementarity of conflicting human truths is lost.—J. J. F. (shrink)

_The Budapest School: Beyond Marxism_ develops a systematic reconstruction of the post-Marxist projects of the Budapest School. It charts the evolution of these thinkers from their beginnings in the ‘renaissance of Marxism’ through to their contemporary critical theories of modernity.

The posterior parietal cortex (PPC) is the most likely site where egocentric spatial relationships are represented in the brain. PPC cells receive visual, auditory, somaesthetic, and vestibular sensory inputs; oculomotor, head, limb, and body motor signals; and strong motivational projections from the limbic system. Their discharge increases not only when an animal moves towards a sensory target, but also when it directs its attention to it. PPC lesions have the opposite effect: sensory inattention and neglect. The PPC does not seem (...) to contain a “map” of the location of objects in space but a distributed neural network for transforming one set of sensory vectors into other sensory reference frames or into various motor coordinate systems. Which set of transformation rules is used probably depends on attention, which selectively enhances the synapses needed for making a particular sensory comparison or aiming a particular movement. (shrink)