Out with the new,in with the old: Exogenous orienting to locations with physically constant stimulation

Dominant methods of investigating exogenous orienting presume that attention is captured most effectively at locations containing new events. This is evidenced by the ubiquitous use of transient stimuli as cues in the literature on exogenous orienting. In the present study, we showed that attention can be oriented exogenously toward a location containing a completely unchanging stimulus by modifying Posner’s landmark exogenous spatial-cueing paradigm. Observers searched a six-element array of placeholder stimuli for an onset target. The target was preceded by a decrement in luminance to five of the six placeholders, such that one location remained physically constant. This “nonset” stimulus (so named to distinguish it from a traditional onsetting transient) acted as an exogenous cue, eliciting patterns of facilitation and inhibition at the nonset location and demonstrating that exogenous orienting is not always evident at the location of a visual transient. This method eliminates the decades-long confounding of orienting to a location with the processing of new events at that location, permitting alternative considerations of the nature of attentional selection.     

Continuous hand movement induces a far-hand bias in attentional priority

Previous research on the interaction between manual action and visual perception has focused on discrete movements or static postures and discovered better performance near the hands (the near-hand effect). However, in everyday behaviors, the hands are usually moving continuously between possible targets. Therefore, the current study explored the effects of continuous hand motion on the allocation of visual attention. Eleven healthy adults performed a visual discrimination task during cyclical concealed hand movements underneath a display. Both the current hand position and its movement direction systematically contributed to participants’ visual sensitivity. Discrimination performance increased substantially when the hand was distant from but moving toward the visual probe location (a far-hand effect). Implications of this novel observation are discussed.     

Towards a Theological Metaphysics of Death

Death is an inescapable event. It defines our existence as mortal. It is both a marker of our finitude and a portal to a deeper mystery: what awaits us in, through, and beyond this moment of ending? In thinking about death in the context of a theological dialogue, I identify two key questions: the phenomenological ‘What is death?’ and the philosophical ‘What is the meaning of death?’ as the beginning points of reflection. In general, it is the function of religion to provide some sort of answer to these questions, to give death both coherent definition and adequate understanding. The primary religious response is to articulate appropriate beliefs. But in their intellectual formation and construction, beliefs draw on metaphysics—the structures of logic, language, conceptuality and general worldview presuppositions by which we render all things intelligible and communicable. In this article I shall undertake an exploration of Christian viewpoints on death, which will require noting antecedents and corollaries in Judaism, then discuss possible metaphysical readings of death, that is, philosophical understandings of death that lie within and under, as it were, the otherwise stated religious beliefs about death. The aim of this article is not to present a fully developed ‘theological metaphysics of death’ as such; rather, in the context of an inter-religious dialogical engagement, to raise issues and perspectives from a Christian point of view that might contribute to a wider, more encompassing, theistically oriented understanding of death.     

Sex crimes and the new punitiveness

In the last few years, new ways of punishing sex offenders have been introduced in many modern societies. However, these sanctions have a broader significance than this: they are part of a broader set of penal arrangements-directed at the criminal population as a whole-which represents a new punitiveness. This seems to be moving the direction of legal punishment beyond the established parameters that had hitherto been set for it in modern society. This had involved punishment becoming increasingly administered by penal bureaucracies, to the exclusion of the general public, being influenced by the opinion of penal experts, and becoming more tempered, consistent and purposeful in form. Sanctions that did not fit these criteria faded out of modern penality. The indeterminate prison sentence was introduced at its outer limits as a residual measure of control to be used against those offenders-frequently sex criminals-for whom the existing penal framework was thought inappropriate. Even so, by the 1970s, these special penal measures were falling into disuse. However, the new punitiveness has not only given new life to them, but has also led to the introduction of measures which seem to reverse or move beyond modernpenal parameters. The article argues that the reasons for these shifts lie in the profound economic and social changes that have taken place in Western societies over the course of the last two decades or so.     

Attending to eye movements and retinal eccentricity: evidence for the activity distribution model of attention reconsidered

When testing between spotlight and activity distribution models of visual attention, D. LaBerge, R. L. Carlson, J. K. Williams, and B. G. Bunney (1997) used an experimental paradigm in which targets are embedded in 3 brief displays. This paradigm, however, may be confounded by retinal eccentricity effects and saccadic eye movements. When the retinal eccentricities of the targets are equated and eye position is monitored, the pattern of results reported by LaBerge et al., which supported the activity distribution model, is not found. This result underscores the importance of considering targets' eccentricity and people's inclination to make saccadic eye movements in certain types of visual cognition tasks. ((c) 2005 APA, all rights reserved).     

Dynamic algebras: Examples,constructions, applications

Dynamic algebras combine the classes of Boolean (B 0) and regular (R ; *) algebras into a single finitely axiomatized variety (B R ) resembling an R-module with scalar multiplication . The basic result is that * is reflexive transitive closure, contrary to the intuition that this concept should require quantifiers for its definition. Using this result we give several examples of dynamic algebras arising naturally in connection with additive functions, binary relations, state trajectories, languages, and flowcharts. The main result is that free dynamic algebras are residually finite (i.e. factor as a subdirect product of finite dynamic algebras), important because finite separable dynamic algebras are isomorphic to Kripke structures. Applications include a new completeness proof for the Segerberg axiomatization of prepositional dynamic logic, and yet another notion of regular algebra.Dept. of Computer Science, Stanford, CA 94305 This research was supported by the National Science Foundation under NSF grant no. MCS78-04338. Preparation of the present version was supported by the National Science Foundation under NSF grant number CCR-8814921.This paper originally appeared as Technical Memo #138, Laboratory for Computer Science, MIT, July 1979, and was subsequently revised, shortened, retitled, and published as [Pra80b]. After more than a decade of armtwisting I. Németi and H. Andréka finally persuaded the author to publish TM#138 itself on the ground that it contained a substantial body of interesting material that for the sake of brevity had been deleted from the STOC-80 version. The principal changes here to TM#138 are the addition of footnotes and the sections at the end on retrospective citations and reflections.     

Life's little (and big) lessons: identity statuses and meaning-making in the turning point narratives of emerging adults

A longitudinal study examined relations between 2 approaches to identity development: the identity status model and the narrative life story model. Turning point narratives were collected from emerging adults at age 23 years. Identity statuses were collected at several points across adolescence and emerging adulthood, as were measures of generativity and optimism. Narratives were coded for the sophistication of meaning-making reported, the event type in the narrative, and the emotional tone of the narrative. Meaning-making was defined as connecting the turning point to some aspect of or understanding of oneself. Results showed that less sophisticated meaning was associated particularly with the less advanced diffusion and foreclosure statuses, and that more sophisticated meaning was associated with an overall identity maturity index. Meaning was also positively associated with generativity and optimism at age 23, with stories focused on mortality experiences, and with a redemptive story sequence. Meaning was negatively associated with achievement stories. Results are discussed in terms of the similarities and differences in the 2 approaches to identity development and the elaboration of meaning-making as an important component of narrative identity.