Accession Number:

AD0432587

Title:

THE VISUAL PERCEPTION OF SPATIAL EXTENT,

Descriptive Note:

Corporate Author:

CIVIL AEROMEDICAL INST OKLAHOMA CITY OKLA

Personal Author(s):

Report Date:

1963-09-01

Pagination or Media Count:

13.0

Abstract:

This study was concerned with the manner in which perceived depth and perceived frontoparallel size varied with physical distance and hence with each other. An equation expressing the relation between perceived frontoparallel size and physical depth was developed and applied to frontoparallel size judgments determined with four observers under two viewing conditions. Using the same equation and an expression of the size-distance invariance hypothesis, an additional equation was developed which related perceived and physical depth. The additional equation, when applied to judgments of perceived depth from the same observers under the same viewing conditions, produced results not in agreement with those expected from the sizedistance invariance hypothesis. This is interpreted as evidence against the validity of the size-distance invariance hypothesis in its usual form. The results from the apparent depth judgments also were applied to the problem of the nonveridicality of the perceptual bisection of depth intervals. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE