A Complete Axiom System for Polygonal Mereotopology of the Real Plane

This paper presents a calculus for mereotopological reasoning in which two-dimensional spatial regions are treated as primitive entities. A first order predicate language with a distinguished unary predicate c(x), function-symbols , · and – and constants 0 and 1 is defined. An interpretation for is provided in which polygonal open subsets of the real plane serve as elements of the domain. Under this interpretation the predicate c(x) is read as region x is connected and the function-symbols and constants are given their meaning in terms of a Boolean algebra of polygons. We give an alternative interpretation based on the real closed plane which turns out to be isomorphic to A set of axioms and a rule of inference are introduced. We prove the soundness and completeness of the calculus with respect to the given interpretation.     

Decisions as statistical evidence and Birnbaum's ‘confidence concept’

Conclusion To whatever extent the use of a behavioral, not an evidential, interpretation of decisions in the Lindley-Savage argument for Bayesian theory undermines its cogency as a criticism of typical standard practice, it also undermines the Neyman-Pearson theory as a support for typical standard practice. This leaves standard practice with far less theoretical support than Bayesian methods. It does nothing to resolve the anomalies and paradoxes of standard methods. (Similar statements apply to the common protestation that the models are not real anyway.) The appropriate interpretation of tests as evidence, if possible at all, is difficult and counterintuitive. Any attempt to support tests as more than rules of thumb is doomed to failure.     

Predicting Generative Concern in Young Adulthood from Narrative Intimacy: A 5-Year Follow-Up

According to Erikson’s developmental model, achieving intimacy in young adulthood should predict higher levels of generativity later in life. This mixed quantitative and qualitative, longitudinal study examined the relationship between generative concern and intimacy in young adulthood (from ages 26–32). Participants (N = 147; 69 % female; 74.1 % college educated) told a narrative about a “relationship defining moment” with a same-sex friend, and completed self-report questionnaires of optimism and generative concern at ages 26 and 32. Optimism and generative concern had strong stability over time, while friendship intimacy did not exhibit test–retest stability. Most participants (88.6 %) disclosed a different story at each time point, which contributed to the lack of rank-order stability for friendship intimacy in the present study. Friendship intimacy was positively correlated with age 26 and age 32 generative concern. Both sex and optimism predicted longitudinal increases in generative concern over 5 years, with women and people higher in optimism seeing larger increases. Friendship intimacy coded from narratives at 26 predicted (p = .052) increases in generative concern at 32. The present study extended prior research by examining the relationship between intimacy and generative concern as people develop from emerging to young adulthood. Following Erikson, developing close relationships with others, exhibiting an optimistic outlook on life, and being female appear to facilitate greater generative concern in young adults.     

Pluralism,Postmodernism and Interreligious Dialogue

Interreligious dialogue does not take place in a vacuum, nor is it a matter of casual conversation. Dialogue is a contested phenomenon, advocated and embraced on one hand, eschewed and discarded on the other. By way of an exploration of the fact of plurality, the notions of modernism and postmodernism, and a brief discussion of select pertinent issues (unity, truth, and the very idea of theology), the paradigmatic context of pluralism will be critically discussed. Contemporary engagement in interreligious dialogue and interfaith relations requires to be underpinned by a carefully thought-out conceptualising of the context in which it can authentically occur. This paper seeks to contribute to the understanding of the context of and for interreligious dialogue.

The effect of previous trial type on inhibition of return

Inhibition of return (IOR) refers to the finding that targets appearing at previously cued locations are more slowly responded to than targets appearing at previously uncued locations when a relatively long temporal interval occurs between the cue and target. This experiment was conducted to determine whether the magnitude of IOR is influenced by the type of preceding trial (cued or uncued) and/or the location of the cue/target on the previous trial. Although no effect of cue/target location is observed, there was a marked effect of previous trial type, as IOR was greater following an uncued trial relative to a cued trial. This effect was attributable to differences in the response time as a function of previous trial type: specifically, participants were faster to respond to cued and uncued trials when the previous trial type was identical.     

When do response-related episodic retrieval effects co-occur with inhibition of return?

Attention, Perception, & Psychophysics - At some point, spatial priming effects more faithfully reflect response selection processes than they do attentional orienting or sensory processes....     

Visual layout modulates Fitts’s law: The importance of first and last positions

When a target in the last position of a structured visual array is aimed for, movement times (MTs) are shorter than predicted by Fitts’s law (Adam, Mol, Pratt, & Fischer, 2006). That study, however, confounded relative target position with absolute target location. To determine whether target position does, indeed, produce changes in the speed-accuracy trade-off function, the present experiment manipulated relative target position (e.g., first or last) independently of absolute target location (e.g., nearest or farthest). This was accomplished by presenting connected placeholders at three adjacent locations from a set of five possible locations (i.e., the middle location could be the first, middle, or last placeholder position in an array). The results of a speeded manual-pointing task showed that relative position is important for Fitts’s law; when absolute location was held constant, shorter MTs were found for last-position than for middle-position targets. In addition, a similar effect was found for first-position targets. These results suggest that Fitts’s law holds within, but not between, relative target positions in visible structured arrays.     

Examining inhibition of return with multiple sequential cues in younger and older adults

Studies with younger adults have shown that when multiple peripheral cues are presented sequentially, inhibition of return (IOR) occurs at several locations with the greatest IOR at the most recently cued location and the least at the earliest cued location. The inhibitory ability needed to tag multiple locations requires visuospatial working memory, and it is thought that this type of memory may be vulnerable to the effects of aging. The present experiments examined whether older adults would show less IOR at multiple cued locations than younger adults when placeholders were present (Experiment 1) and absent (Experiment 2). Of interest, in both experiments older adults showed an almost identical pattern of IOR, in both magnitude and number of inhibited locations, to that of younger adults. This finding, in conjunction with research on memory-guided saccades, suggests that there may be a form of visuospatial working memory, specific to oculomotor and visual attention processes, that is relatively resistant to the effects of aging.