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
Descriptors:
Subject Categories:
- Anatomy and Physiology
- Optical Detection and Detectors