David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jack Alan Reynolds
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Journal of Experimental Psychology: Human Perception and Performance 3:473–483 (1977)
Shape and slant judgments of rotated or frontoparallel ellipses were elicited from three groups of 10 subjects. A masking stimulus was introduced to control processing time. Backward masking trials were presented with interstimulus intervals of 0, 25, and 50 msec, Reduction of processing time altered shape judgments in the direction of projective shape and slant judgments in the direction of frontoparallelness. This finding is consistent with the shape-slant invariance hypothesis. In order to study the effects of processing load, one group of subjects was given prior knowledge of the kind of judgment to be made on each trial, one group had no prior knowledge, and a third group made both judgments on each trial. The effects of the processing load manipulation were interpreted in terms of the role of attention in perceptual encoding. Consistent with previous findings, allocation of attention did not affect perceptual encoding.
|Keywords||Shape constancy Slant perception Masking of 3-D stimul Perceptual processing Allocation of attention|
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Citations of this work BETA
Gary Hatfield (2005). Introspective Evidence in Psychology. In P. Achinstein (ed.), Scientific Evidence: Philosophical Theories & Applications. The Johns Hopkins University Press
Gary Hatfield (1988). Representation and Content in Some (Actual) Theories of Perception. Studies in History and Philosophy of Science Part A 19 (2):175-214.
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