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Self-selected inter...
Self-selected interval judgments compared to point judgments : A weight judgment experiment in the presence of the size-weight illusion
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- Gonzalez, Nichel, 1981- (author)
- Stockholms universitet,Kognitiv psykologi,Department of Psychology, Gosta Ekman Laboratory, Stockholm University, Stockholm, Sweden
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- Svenson, Ola, 1939- (author)
- Stockholms universitet,Kognitiv psykologi,Decision Research, United States of America,Department of Psychology, Gosta Ekman Laboratory, Stockholm University, Stockholm, Sweden; Decision Research, OR, Eugene, United States
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- Ekström, Magnus, 1966- (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Statistik,Department of Forest Resource Management, Swedish University of Agricultural Sciences, Umea, Sweden,Institutionen för skoglig resurshushållning,Umeå University
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- Kriström, Bengt (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogsekonomi,Department of Forest Economics
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- Nilsson, Mats E. (author)
- Stockholms universitet,Perception och psykofysik,Department of Psychology, Gosta Ekman Laboratory, Stockholm University, Stockholm, Sweden
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(creator_code:org_t)
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- 2022-03-16
- 2022
- English.
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In: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 17:3
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Abstract
Subject headings
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- Measurements of human attitudes and perceptions have traditionally used numerical point judgments. In the present study, we compared conventional point estimates of weight with an interval judgment method. Participants were allowed to make step by step judgments, successively converging towards their best estimate. Participants estimated, in grams, the weight of differently sized boxes, estimates thus susceptible to the size-weight illusion. The illusion makes the smaller of two objects of the same weight, differing only in size, to be perceived as heavier. The self-selected interval method entails participants judging a highest and lowest reasonable value for the true weight. This is followed by a splitting procedure, consecutive choices of selecting the upper or lower half of the interval the individual estimates most likely to include the true value. Compared to point estimates, interval midpoints showed less variability and reduced the size-weight illusion, but only to a limited extent. Accuracy improvements from the interval method were limited, but the between participant variation suggests that the method has merit.
Subject headings
- SAMHÄLLSVETENSKAP -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology (hsv//eng)
- SAMHÄLLSVETENSKAP -- Psykologi -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology -- Psychology (hsv//eng)
Keyword
- size-weight illusion
- measurement
- point judgements
- interval judgements
- estimations
- psykologi
- Psychology
Publication and Content Type
- ref (subject category)
- art (subject category)
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