Abstract
Eight Ss (Group L) judged differences in heaviness between all pairs of stimuli in three series of five weights each, in the range of 100–300 g, presented randomly. Series L varied in weight and density, Series LVW varied only in weight, and Series LVD varied only in density. Another eight Ss (Group H) judged heaviness differences between all pairs of stimuli in three similar series (H, HVW, and HVD) in the range 700–900 g. Differences in density alone yielded relatively greater impressions of difference in heaviness in Group H than in Group L. Predictions from Ross and Di Lollo’s vector theory were confirmed.
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ROSS, J., & DI LUPOLLO, V. A vector model for psychophysical judgment. Journal of Experimental Psychology Monograph Supplement, 1968, 00(00, Whole No. 000).
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This research was mainly supported by the Australian Research Grant Committee under Grant No. ARG 15-226 to the first author. Some support was also provided by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under Grant No. AF-AFOSR-968-67 to the second author. We acknowledge the help of R. J. Donovan in the collection of data and in the analysis of results.
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Ross, J., Di Lollo, V. Differences in heaviness in relation to density and weight. Perception & Psychophysics 7, 161–162 (1970). https://doi.org/10.3758/BF03208648
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DOI: https://doi.org/10.3758/BF03208648