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171.
In two experiments, we investigated hemispheric electroencephalography (EEG) differences in 9(12) healthy volunteers during pointing to lateral and central targets. The questions addressed were whether horizontal pointing direction and the predictability of pointing direction modulated hemispheric differences (event-related lateralizations of the EEG = ERLs). To vary pointing direction predictability, targets were displayed either randomly at one of nine different positions on a screen (random) or at the same horizontal position in five subsequent trials (sequenced) while vertical positions varied randomly. Event-related lateralizations (ERLs) varied with pointing direction. This was true across changes in target eccentricity and pointing distance. Foci of the ERLs were in premotor and posterior parietal cortex, which might reflect the critical involvement of these areas in the control of visually guided reaching. Direction predictability reduced the parietal and premotor ERL before pointing onset, probably reflecting a lesser effort in visuomotor transformation. Predictability also added an overlying N2pc component to the early ERL after target onset and increased direction effects during movement. 相似文献
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Howe EG 《The Journal of clinical ethics》2003,14(3):137-151
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Katarzyna Kostyrka-Allchorne Sam V. Wass Hodo Yusuf Vidya Rao Chloé Bertini Edmund J. S. Sonuga-Barke 《The British journal of developmental psychology》2023,41(1):50-65
Separate studies with clinical and community-based samples have identified an association between symptoms of attention-deficit hyperactivity disorder (ADHD) and inhibitory control deficits and ADHD and weak effortful control. We tested whether differences in effortful control explained the associations between ADHD symptoms and inhibitory control deficits, controlling for conduct problems. In a community sample, parents rated ADHD symptoms, conduct problems, effortful control, surgency and negative affect in 77 4-7-year-olds (47 girls), who performed an inhibitory control task. ADHD symptoms, deficient inhibitory control and low effortful control were correlated. Controlling for conduct problems, path analysis showed the ADHD symptoms – inhibitory control link was mediated statistically by effortful control. This focuses attention on cognitive-energetic factors associated with ADHD-related executive deficits. 相似文献
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Edmund Nierlich 《Erkenntnis》1988,29(1):1-33
In this paper an attempt is made at developing the notion of a real and complete empirical explanation as excluding all forms of potential or incomplete explanations. This explanation is, however, no longer conceived as the proper aim of empirical science, for it can certainly be gleaned from recent epistemological publications that no comprehensive notion of a real and complete scientific explanation is likely to be constructed from within empirical science. Contrary to common understanding the empirical explanation, deductive-nomological as well as statistical explanation, is considered here only as motive of scientific activities, i.e., as common aim of a transcending cooperation of scientific and non-scientific social practice. Following from this the proper aim of empirical science now consists in the development of practically relevant explanatory theories.This redetermination of the aim of scientific activities of empirical science also means criticism of the unification of deductive-nomological and statistical explanations, as it has been proposed by Wolfgang Stegmüller in his pragmatisch-epistemische Wende. For both forms of empirical explanation must be referred to fundamentally different kinds of practical relevance, the former playing a more important role in the advancement of social practice. Stegmüller's development of a comprehensive probabilistic notion of empirical explanation, as tied up to pragmatic knowledge-situations, in a way already transcends a scientifically immanent determination of it, but he seems to have stopped halfway on the road to practically relevant empirical explanations. Several insufficiencies with his probabilistic notion of empirical explanation are shown up in this paper as a consequence of his abiding by pragmatic, and not penetrating to practical, knowledge-situations. The final result of it, however, consists in a clarification and a modification of the concept of deductive-nomological explanation, originally developed by Hempel and Oppenheim. 相似文献
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The certainty and severity of punishment for crimes are commonly given credence as determinants of deterrence value, whereas celerity of punishment is not. Moreover, data are sparse and divided on the question of how certainty and severity components combine algebraically. Two experiments inspected the effects of certainty, severity and celerity of hypothetical punishments on judged deterrence value, and the form of their factorial combination. Judged deterrence scale values were obtained for eight hypothetical conditions of punishment for serious crimes. These conditions of punishment consisted of orthogonal combinations of two levels each of certainty, severity, and celerity and were administered to independent subjects. Strong effects of certainty and severity and moderate effects of celerity were found, and there were no interactions among the three variables. Thus, celerity is pertinent to judged deterrence value, and the three components of punishment clearly combine additively rather than multiplicatively. It is argued that despite the empirical results, certainty, severity, and celerity must, however, ultimately be showp to combine according to a multiplying rule. The Discussion centers largely on an analysis and justification for that argument. 相似文献