Why are our similarities so different? A reply to Humphreys and Riddoch.
نویسندگان
چکیده
ed ‘perceptual’ level; using line drawings, greyscale or silhouettes. In conclusion, we suggest that retinotopic variables – such as EO – do have predictive validity for object naming tasks, both under normality and under pathology. Such measures may not generalise beyond the Snodgrass and Vanderwart (1980) set of pictures, but we have never claimed otherwise (and the same is of course true for other well-accepted predictor variables such as visual complexity). Nonetheless, given that the vast majority of category specific studies (we estimate 90%+) have been based upon the Snodgrass and Vanderwart stimuli, we do not view this as a limitation to the utility of EO. Acknowledgements. We would like to thank various people who have contributed to this research, including Verity Leeson, Neil Davey, Ray Frank, and Christine Neve. Thanks Category-spcificity and visual similarity 649 2 This issue is important since it is unclear whether Humphreys and colleagues are referring to similarity of input stimuli or for stored representations or both to Professor Humphreys and colleagues for generously allowing us access to their Contour Overlap data and to Professor Della Sala for his helpful comments on an earlier draft of this paper.
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عنوان ژورنال:
- Cortex; a journal devoted to the study of the nervous system and behavior
دوره 38 4 شماره
صفحات -
تاریخ انتشار 2002