Accession Number:

AD0730283

Title:

Human Estimation of Proportional Distances and Distance Ratios with the Aid of a Reference Length.

Descriptive Note:

Final rept. Mar-Nov 68,

Corporate Author:

AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1971-06-01

Pagination or Media Count:

31.0

Abstract:

Two experiments were conducted to investigate human ability to estimate the location of a target point. In the first experiment, a lateral distance between two remote points was displayed, and subjects were required to define, by means of a sighting device, a second lateral distance bearing a prescribed ratio to the first. In the second experiment, subjects were required to estimate the ratio of two displayed distances. Both experiments were conducted on an indoor, table-top range. A reference distance and a ratio aided accuracy in estimating distances. The findings suggest the value of a physically present reference distance for communicating the location of an obscure point. Author

Subject Categories:

  • Anatomy and Physiology
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE