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Abstract

Adult subjects made monocular size judgements in two experiments in which the independent variables of surface texture and restrictions on viewing conditions were manipulated. Texture density gradients of stimulation had a significant influence of size judgements only under the less reduced conditions of observation when subjects could see other textured surfaces beyond the surfaces over which judgements were made. Identical manipulations of surface texture had earlier been found to have a highly significant influence on relative distance judgements (Newman, 1971). The principally negative results were thus taken to imply that subjects extract different information from the texture density gradient when judging size from that extracted when judging relative distance.

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References

Blessing

W. W.

Landauer

A. A.

Coltheart

(1967). The effect of false perspective cues on distance and size-judgements: An examination of the invariance hypothesis. American Journal of Psychology 80, 250–6.

Clark

W. C.

Smith

A. H.

Rabe

(1956). The interaction of surface texture, outline gradient, and ground in the perception of slant. Canadian Journal of Psychology 10, 1–8.

Eriksson

E. S.

(1964). Monocular slant perception and the texture gradient concept. Scandinavian Journal of Psychology 5, 123–8.

Epstein

Park

Casey

(1961). The current status of the size-distance hypothesis. Psychological Bulletin 58, 491–514.

Flock

H. R.

Moscatelli

(1964). Variables of surface texture and accuracy of space perceptions. Perceptual and Motor Skills 19, 327–34.

Gibson

J. J.

(1950a). The Perception of the Visual World Boston: Houghton Mifflin.

Gibson

J. J.

(1950b). The perception of visual surfaces. American Journal of Psychology 63, 367–84.

Gibson

J. J.

(1959). Perception as a function of stimulation. Psychology, a Study of a Science Koch

New York: McGraw-Hill Vol. I, 456–501.

Gibson

J. J.

(1968). The Senses Considered as Perceptual Systems London: Allen & Unwin.

10.

Gruber

H. E.

Clark

W. C.

(1956). Perception of slanted surfaces. Perceptual and Motor Skills 6, 96–106.

11.

Kraft

A. L.

Winnick

W. A.

(1967). The effect of pattern and texture gradient on slant and shape judgements. Perception and Psychophysics 2, 141–7.

12.

Kuroda

(1961). Experimental studies on size constancy. Experimental Researches on the Structure of the Perceptual Space. IV. Bulletin of the Faculty of Literature of Kyushu University 7, 59–102In Akishige, Y. (Ed.).

13.

Newman

C. V.

(1970). The influence of texture density gradients on judgements of length. Psychonomic Science 20, 333–4.

14.

Newman

C. V.

(1971). The influence of visual texture density gradients on relative distance judgements. Quarterly Journal of Experimental Psychology 23, 225–33.

15.

Wohlwill

J. F.

(1964). Changes in distance as a function of corrected and non-corrected practice. Perceptual and Motor Skills 19, 403–13.

Variations in Size Judgements as a Function of Surface Texture

Abstract

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