The effect of refractive error was determined for both size constancy and shape constancy. Although an error of 1·5 diopters reduces shape constancy, 3·0 diopters of blur had no effect on size constancy. The results are discussed in terms of the multiple mechanisms subserving the perceptual constancies. The importance of cues from the peripheral visual fields for size constancy and the role of foveally mediated texture and stereopsis cues for shape constancy are emphasized.
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References
1.
BollesR CBaileyD E, 1956“Importance of object recognition in size constancy”Journal of Experimental Psychology51222–225
2.
BorishI, 1970Clinical Refraction3rd edition (Chicago: Professional Press)
3.
HarveyL OLeibowitzH W, 1967“Effects of exposure duration, cue reduction, and temporary monocularity on size matching at short distances”Journal of the Optical Society of America57249–253
4.
HochbergJ, 1972“Perception II: Space and Movement” in Woodworth and Schlosberg's Experimental Psychology Eds KlingJ WRiggsL A (London: Methuen) pp 505–519
5.
HolwayA HBoringE G, 1941“Determinants of apparent visual size with distance variant”American Journal of Psychology5421–37
6.
LeibowitzH WBourneL EJr, 1956“Time and intensity as determiners of perceived shape”Journal of Experimental Psychology51277–281
7.
LeibowitzH WChinettiPSidowskiJ, 1956“Exposure duration as a variable in perceptual constancy”Science123668–669
8.
LeibowitzH WHennessyR T, 1975“The laser optometer and some implications for behavioral research”American Psychologist30349–352
9.
LeibowitzH WShiinaKHennessyR T, 1972“Oculomotor adjustments and size constancy”Perception and Psychophysics12(6) 497–500
10.
LeibowitzH WShupert-RodemerCDichgansJ, “The independence of dynamic spatial orientation from luminance and refractive error” in preparation
11.
MillodotMJohnsonC ALamontALeibowitzH W, 1975“Effect of dioptrics on peripheral visual acuity”Vision Research151357–1362
12.
MeneghiniKLeibowitzH W, 1967“Effect of stimulus distance and age on shape constancy”Journal of Experimental Psychology74241–248
13.
PostR B, 1978“The effect of refractive error upon mechanisms of movement detection”unpublished Master's thesis, Pennsylvania State University, University Park
