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Perception of Body Size in Schizophrenia
Archives of General Psychiatry, 1962In an earlier preliminary study, Cleveland 1 found that schizophrenics overestimate body size when making size judgments from photographs of body parts. Moreover, schizophrenics exceeded a hospital control group in size estimates made from photographs of such body parts as a heart and stomach, as well as a hand and foot.
S E, CLEVELAND +3 more
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Size Constancy and Angular Size Matching in Size Perception of Near Objects
Optometry and Vision Science, 1999Accurate judgment of the relative sizes of near objects at various distances is important for a variety of occupational visual tasks. This study involved matching the apparent size of each of a series of standard targets, placed at distances between 0.2 and 3 m and all subtending 2 degrees at the eye, with a comparison target of similar geometry, but ...
L H, Koh, W N, Charman
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Plate size does not affect perception of food portion size
Journal of Human Nutrition and Dietetics, 2013AbstractBackgroundEvidences have suggested that larger utensils may provoke ‘size‐contrast illusions’, influencing the perceived volume and food consumption.ObjectiveTo analyse the influence of plate size on the visual estimate of food portion size.MethodsTwo 400 g portions of pasta with tomato sauce were presented on two plates of different diameters (
F R O, Penaforte +5 more
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Visual perception of changing size: The effect of object size
Vision Research, 1979Abstract Since marked threshold elevations specific to changing size were produced by rectangular stimuli whose widths were less than 1.5°, but not by wider rectangles we suggest that changing size filters are not sensitive to pairs of edges separated by more than about 1.5°.
K I, Beverley, D, Regan
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The Size Illusion: Visual and Kinaesthetic Information in Size Perception
Perception, 1985Earlier studies have shown the size of kinaesthetically presented two-dimensional movement patterns to be significantly overestimated. Whether this size overestimation is characteristic of the kinaesthetic system alone has not been established. Two experiments are reported which were designed to investigate size judgment made after kinaesthetic and ...
Laszlo, J. I., Broderick, P.
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Environment and Behavior, 1984
Three studies were conducted that explore the relationship between the shape and the perceived size of rectangular and square rooms. In each study, subjects were asked to estimate the size of rooms that varied in their ratio of length to width.
Edward K. Sadalla, Diana Oxley
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Three studies were conducted that explore the relationship between the shape and the perceived size of rectangular and square rooms. In each study, subjects were asked to estimate the size of rooms that varied in their ratio of length to width.
Edward K. Sadalla, Diana Oxley
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Visual Perception of Portion Size
Ecology of Food and Nutrition, 2008Three studies were made in which chips (French fries) of different thickness and peas of different sizes were used. In each study, subjects were asked to serve the food in an attempt to match a standard amount of food placed on the table. Subjects served significantly (P < 0.001) smaller amounts of thin chips compared to thick chips, whether the ...
A. Wise +3 more
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Visual Perception of Portion Size
Journal of Culinary Science & Technology, 2010People overestimate thick and underestimate thin chipped potatoes when judging by eye. Three possible causes of this misperception have been tested by questionnaire in this study: the greater number of pieces of thin chips may suggest that there is a greater amount or they might match the height of the mound or the plate coverage. Subjects plated three
C. Ramsay, A. Wise
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NOTE ON DEVELOPMENT OF PERCEPTION OF SIZE
Perceptual and Motor Skills, 2007The development of the perception of size is currently interpreted as the development of size constancy. Using data from prior studies, this paper reports a functional measurement analysis of the perceived size of rectangles located on a frontal plane.
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Contrast perception and stimulus size
Annual Meeting Optical Society of America, 1986Several studies have demonstrated the fact that suprathreshold contrast perception for sine wave gratings is relatively independent of the number of stimulus cycles. However, only two studies have investigated perceived contrast for patterns as small as one or two cycles and these produced conflicting results. One study found a decrease in the apparent
Mark W. Cannon, Steven C. Fullenkamp
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