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201.
Denis Miéville 《Argumentation》1989,3(1):45-57
It is well known that classical logics are able to represent only some aspects of ordinary reasoning. In particular, by accepting the law of obversion, they remove the possibility of defining any but a propositional negation; certain natural uses of negation thus elude them. Logical theories do exist, however, that are exempt from such limitations. Among these theories are those of S. Leniewski, which differ profoundly from classical formal systems. Unlike the latter, they do not have a determined list of functors of syntactical-semantical categories. Due to formalized directives for definitions, the logics of Leniewski are constructed progressively, making new theses and consequently functors of new syntactical-semantical categories accessible. In this article we use some of these theses-definitions to define a principle of appropriateness. With this principle it is possible to represent certain logical subtleties that are used quite naturally but are neglected due to the law of obversion.
Lorsque la logique rencontre l'argumentation相似文献
202.
Jessica P. Greenwald Alan J. Tomkins Mary Kenning Denis Zavodny 《Behavioral sciences & the law》1990,8(2):171-180
Ewing (1987) has proposed a new legal doctrine called ‘Psychological Self-Defense,’ which is intended to provide a legal justification for a killing committed under the threat of extremely serious psychological injury. This study examines the effect of such an affirmative defense on the verdict in two vignette cases in which a battered woman killed her abuser. One-hundred ninety-six subjects issued verdicts after reading the case vignettes and a series of jury instructions which varied by self-defense instruction (Psychological Self-Defense Only, Physical Self-Defense Only, Psychological and Physical Self-Defense, or none of these). Only Psychological Self-Defense instructions significantly influenced verdict patterns, primarily by shifting would-be voluntary manslaughter convictions to acquittals. 相似文献
203.
We describe a stimulus pattern designed for use in test probe investigations of binocular rivalry. The pattern consists of a contour-free disk that is identical in luminance in both eyes surrounded by a dimmer annulus in one eye and a brighter annulus in the other. Temporal characteristics of rival alternations can be controlled by manipulating luminance of the annuli. Sensitivity to probes inserted in the rival region can be measured uncontaminated by differences in the adaptation state of the eyes or pattern masking. 相似文献
204.
The present paper reports a double-step analysis of a discrete aiming movement. A second target step was presented during the trajectory of the response to an initial step and represented an artificially induced movement error signal. Two stimulus patterns involving steps in the same direction (an undershoot error signal) and opposite direction (an overshoot error signal) to the initial step were examined. Moreover, in a random error condition the subject had no advance information regarding the direction of the error. In a deliberate error condition the subject knew in advance whether any subsequent error would be an undershoot or overshoot. Response parameters were considered as a function of the interstep interval which was randomly varied across trials. In terms of movement time, the standard deviations and a constant amendments score of double-step trials, subjects could respond more appropriately and effectively to a deliberate rather than a random error, and an undershoot error rather than an overshoot error. These results are discussed in terms of a mixed-mode of visuo-spatial error updating and related to the generalized motor program hypothesis. 相似文献
205.
The present study examines the effects of speed constraints (target velocity) and time constraints (target duration) on performance on a coincident timing task by 5-, 7- and 9-year-old children and adults. The results showed that the young children significantly improved their performance (per cent of hits) and response accuracy CE, |CE| when given longer time to perform the task. The adults were just as successful for both durations. All subjects showed better performance (per cent of hits) with slower targets, however, for the children this effect was only noticeable with targets of long duration. Target duration also revealed development changes in response control and execution, with the younger children producing different response patterns for IRT, MT and IP measures. The developmental differences at this task are discussed in terms of the control mechanisms involved and the use of strategies in responding. 相似文献
206.
207.
208.
The present study focuses on the interplay between the linguistic principles and the psycholinguistic processes involved in
reading. Results from 56 participants on a letter detection task reveal that readers do not process all function words in
the same manner. Omission rates were highest for function words occupying the head of maximal projections such as complementizers
and determiners. Prepositions were shown to occupy an intermediary position between content and function words, with omission
rates varying depending on their semantic load. Together these results appear to bolster and offer a finer grained picture
of the role of function words within the framework of both the Guidance Organization (Greenberg et al. in Psychon Bull Rev
11(3):428–433, 2004) and Attentional Disengagement (Roy-Charland et al. in Percept Psychophys 69(3):324–337, 2007) reading models. The results of the present study are discussed using an X-bar theory approach with the goal of refining
the structural account of letter detection errors. 相似文献
209.
Scherer LC Fonseca RP Giroux F Senhadji N Marcotte K Tomitch LM Benali H Lesage F Ska B Joanette Y 《Brain and language》2012,121(2):174-184
Relatively few studies have analyzed the mechanisms underlying the cognitive changes that affect language in the elderly, and fewer have done so for narrative discourse. The goal of this study was to explore the neurofunctional changes associated with aging for different components of narrative discourse. Functional near-infrared spectroscopy (fNIRS) and behavioral data on 10 younger adults and 10 healthy elderly participants were collected. Ten younger adults in a non-proficient second language condition were included to explore the possibility that the age-related neurofunctional reorganization partly expresses demanding resource allocation. Results show within- and across-hemispheric differences in the neurofunctional pattern of activation in the older participants with reference to the younger ones, partially shared with the low-proficiency young adults, providing support for the recognized mechanisms underlying neural reserve and compensation. fNIRS was shown to be appropriate for studying the age-related neurofunctional reorganization of complex cognitive abilities. 相似文献
210.
Marja Laasonen Jonna Salomaa Denis Cousineau Sami Leppämäki Pekka Tani Laura Hokkanen Matthew Dye 《Brain and cognition》2012
In this study of the project DyAdd, three aspects of visual attention were investigated in adults (18–55 years) with dyslexia (n = 35) or attention deficit/hyperactivity disorder (ADHD, n = 22), and in healthy controls (n = 35). Temporal characteristics of visual attention were assessed with Attentional Blink (AB), capacity of visual attention with Multiple Object Tracking (MOT), and spatial aspects of visual attention with Useful Field of View (UFOV) task. Results showed that adults with dyslexia had difficulties performing the AB and UFOV tasks, which were explained by an impaired ability to process dual targets, longer AB recovery time, and deficits in processing rapidly changing visual displays. The ADHD group did not have difficulties in any of the tasks. Further, performance in the visual attention tasks predicted variation in measures of phonological processing and reading when all of the participants were considered together. Thus, difficulties in tasks of visual attention were related to dyslexia and variation of visual attention had a role in the reading ability of the general population. 相似文献