Human Estimation of Proportional Distances and Distance Ratios with the Aid of a Reference Length.
Final rept. Mar-Nov 68,
AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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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
- Anatomy and Physiology
- Optical Detection and Detectors