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361.
This study presents evidence that humans have intuitive, perceptually based access to the abstract fraction magnitudes instantiated by nonsymbolic ratio stimuli. Moreover, it shows these perceptually accessed magnitudes can be easily compared with symbolically represented fractions. In cross-format comparisons, participants picked the larger of two ratios. Ratios were presented either symbolically as fractions or nonsymbolically as paired dot arrays or as paired circles. Response patterns were consistent with participants comparing specific analog fractional magnitudes independently of the particular formats in which they were presented. These results pose a challenge to accounts that argue human cognitive architecture is ill-suited for processing fractions. Instead, it seems that humans can process nonsymbolic ratio magnitudes via perceptual routes and without recourse to conscious symbolic algorithms, analogous to the processing of whole number magnitudes. These findings have important implications for theories regarding the nature of human number sense – they imply that fractions may in some sense be natural numbers, too. 相似文献
362.
Rolf A. Zwaan Carol J. Madden Richard H. Yaxley Mark E. Aveyard 《Cognitive Science》2004,28(4):611-619
Eighty-two participants listened to sentences and then judged whether two sequentially presented visual objects were the same. On critical trials, participants heard a sentence describe the motion of a ball toward or away from the observer (e.g., “The pitcher hurled the softball to you”). Seven hundred and fifty milliseconds after the offset of the sentence, a picture of an object was presented for 500 ms, followed by another picture. On critical trials, the two pictures depicted the kind of ball mentioned in the sentence. The second picture was displayed 175 ms after the first. Crucially, it was either slightly larger or smaller than the first picture, thus suggesting movement of the ball toward or away from the observer. Participants responded more quickly when the implied movement of the balls matched the movement described in the sentence. This result provides support for the view that language comprehension involves dynamic perceptual simulations. 相似文献
363.
Christine Stephens 《Journal of community & applied social psychology》2007,17(2):103-114
Health promotion researchers and practitioners have increasingly turned to community-based approaches. Although there has been much work around the diverse understandings of the term in areas such as community psychology and sociology, I am concerned with how such understandings relate directly to community health research and practice. From a discursive perspective ‘community’ is seen as a socially constructed representation that is used variously and pragmatically. However, from a wider view, community can be seen as a matter of embodied practice. This paper draws on social representations theory to examine the shifting constructions of ‘community’, the functional use of those understandings in social life, and the practices that suggest that it is important to attend to their use in particular contexts. Accordingly, the paper argues that meanings of community in the health promotion or public health context must be seen as representations used for specific purposes in particular situations. Furthermore, the broader notion of embodied practice in social life has implications for community participation in health promotion. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献