Abstract
Objects viewed through a facemask under water appear larger and closer than when viewed in air. Divers’ adaptation to this distortion was measured by obtaining estimates of the size and distance of an array of targets before and after a 20-min underwater dive. A negative correlation between size- and distance-adaptation scores indicated that most divers adapted to one dimension by counteradapting to the other. For example, some Ss adapted to size by increasing the distortion of apparent distance and some the other way around. The results were discussed in relation to the size-distance invariance hypothesis.
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This research was supported by the Office of Naval Research, Contract No. N00014-67-A-0111-0015 and conducted at the Biotechnology Laboratory.Department of Engineering, University of California, Los Angeles. We should like to thank Dr. Glenn Egstrom, Mr. Frank Gasser, and Mr. Peter Lennie for assistance.
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Franklin, S.S., Ross, H.E. & Weltman, G. Size-distance invariance in perceptual adaptation. Psychon Sci 21, 229–231 (1970). https://doi.org/10.3758/BF03332458
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DOI: https://doi.org/10.3758/BF03332458