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151.
Judging the laterality of a hand seen at unanticipated orientations evokes a robust feeling of bodily movement, even though no movement is produced. In two experiments, we tested a novel hypothesis to explain this phenomenon: A hand's laterality is determined via a multisensory binding of the visual representation of the seen hand and a proprioceptive representation of the observer's felt hand, and the felt "movement" is an obligatory aftereffect of intersensory recalibration. Consistent with the predictions implied by such a cross-modal mechanism, our results in Experiment 1 showed that manipulating observers' selective attention can evoke illusory feelings of movement in the "wrong" hand (i.e., the hand whose laterality does not match that of the stimulus). In Experiment 2, these illusions were readily extinguished in conditions in which binding was predicted to fail, a result indicating that cross-modal binding was necessary to produce them. These results are not explained by imagery, a mechanism widely assumed to account for how hand laterality is identified. 相似文献
152.
The authors simulated the vertical movements of a jumper and the force time courses by means of a 4-degrees-of-freedom model consisting of 4 masses, springs, and dampers. Of the motions simulated, only that of the mass imitating the trunk corresponded to the measured data. The best fit to the measured force curves were obtained in the simulation in which time-dependent model parameters were used. From the results, the authors concluded that at the beginning of the landing, a jumper behaves like a 2-mass model in which the leg segments (thighs, shanks, and feet) effectively combine into 1 mass. After approximately 60 ms, the connections between the leg segments become more compliant and the jumper behaves like a 4-mass model with a soft coupling between the leg segments. The process is equivalent to an increase of the degrees of freedom of the movements. At the end of the ground contact phase during hopping, the jumper has to contract the muscles in order to reach the envisaged jump height. In the model, that contraction could not be satisfactorily simulated. 相似文献
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James Fritz 《Pacific Philosophical Quarterly》2017,98(Z1):643-661
Subject‐sensitive invariantism posits surprising connections between a person's knowledge and features of her environment that are not paradigmatically epistemic features. But which features of a person's environment have this distinctive connection to knowledge? Traditional defenses of subject‐sensitive invariantism emphasize features that matter to the subject of the knowledge‐attribution. Call this pragmatic encroachment. A more radical thesis usually goes ignored: knowledge is sensitive to moral facts, whether or not those moral facts matter to the subject. Call this moral encroachment. This article argues that, insofar as there are good arguments for pragmatic encroachment, there are also good arguments for moral encroachment. 相似文献
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Christopher D. Nye Oleksandr S. Chernyshenko Stephen Stark Fritz Drasgow Henry L. Phillips Jeffrey B. Phillips Justin S. Campbell 《Psychologie appliquee》2020,69(2):302-324
Past research has consistently shown that tests measuring specific cognitive abilities provide little if any incremental validity over tests of general mental ability when predicting performance on the job. In this study, we suggest that the seeming lack of incremental validity may have been due to the type of content that has traditionally been assessed. Therefore, we hypothesised that incremental validity can be obtained using specific cognitive abilities that are less highly correlated with g and are matched to the tasks performed on the job. To test this, we examined a recently developed performance-based measure that assesses a number of cognitive abilities related to training performance. In a sample of 310 US Navy student pilots, results indicated that performance-based scores added sizeable incremental validity to a measure of g. The significant increases in R2 ranged from .08 to .10 across criteria. Similar results were obtained after correcting correlations for range restriction, though the magnitude of incremental validity was slightly smaller (ΔR2 ranged from .05 to .07). 相似文献
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Fritz Allhoff 《Science and engineering ethics》2011,17(1):1-19
This paper explores the relationships that various applied ethics bear to each other, both in particular disciplines and more
generally. The introductory section lays out the challenge of coming up with such an account and, drawing a parallel with
the philosophy of science, offers that applied ethics may either be unified or disunified. The second section develops one
simple account through which applied ethics are unified, vis-à-vis ethical theory. However, this is not taken to be a satisfying
answer, for reasons explained. In the third section, specific applied ethics are explored: biomedical ethics; business ethics;
environmental ethics; and neuroethics. These are chosen not to be comprehensive, but rather for their traditions or other
illustrative purposes. The final section draws together the results of the preceding analysis and defends a disunity conception
of applied ethics. 相似文献