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The Measurement of Sensation$
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Donald Laming

Print publication date: 1997

Print ISBN-13: 9780198523420

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780198523420.001.0001

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Judging relations between sensations

Judging relations between sensations

(p.124) 9 Judging relations between sensations
The Measurement of Sensation

Donald Laming

Oxford University Press

Magnitude estimation experiments show only that equal ratios of physical magnitudes are subjectively equivalent — so it may be that participants are actually judging the ratio between pairs of stimuli, equating, for example, ratios between some physical correlate. Autoregressive analysis of magnitude estimates shows that successive judgments are highly correlated — that is, participants judge each stimulus magnitude in relation to its predecessor, supporting the idea of judging a relation between pairs of stimuli. However, instructions to judge the difference between pairs of stimuli vis-a-vis the ratio do not give the same result, so that magnitude estimation can not be reduced to the judgment of a single relationship between pairs of successive stimuli.

Keywords:   correlation, differences, judging relation, magnitude estimation, physical correlates, ratios

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