Accession Number:

AD0607739

Title:

THE EFFECTS OF STIMULUS AND FIELD SIZE ON THE ACCURACY OF ORIENTATION IN THE HOMOGENEOUS ENVIRONMENT.

Descriptive Note:

Technical rept.,

Corporate Author:

NAVAL TRAINING DEVICE CENTER PORT WASHINGTON N Y

Personal Author(s):

• Katz,Milton S.
• Metlay,William
• Cirincione,Paul A.

Report Date:

1964-07-01

Pagination or Media Count:

34.0

Abstract:

The effects of various size targets and the extent of the visual field on the accuracy of orientation in the homogeneous environment were investigated by requiring Ss to reposition, to geometric center, four different targets starting from eleven locations, in a 270 degree homogeneous field. The results showed that 1 each S positioned all four targets into a preferred field, 2 small error scores and consistency in positioning around perceived centers were found with only three of the four targets, 3 in all cases, the largest error and greatest variability was in centering the smallest target, 4 absolute errors were not related in any systematic fashion to the initial starting points, and 5 with respect to initial target presentations, i.e., left and right fields, Ss errors tended to be smaller in the field containing that Ss perceived center. It was suggested, in the discussion, that the variability of the small target could be accounted for, in part, by the autokinetic effect. Author

Descriptors:

• *VISUAL ACUITY
• *VISUAL PERCEPTION
• PERFORMANCE(HUMAN)
• TARGETS
• VISION
• RANGE(DISTANCE)
• POSITION FINDING
• VISUAL SIGNALS
• PERFORMANCE(HUMAN)
• TRAINING DEVICES

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE