Target Information Processing: The Effects on Reaction Time of Terrain, Downlook Angle, and Response Processing Level
Abstract
This experiment explored the applicability of a serial exhaustive memory scan as a model of the observer's cognitive behavior in a target acquisition task. Reaction times were examined for identification, recognition (friend-enemy), and set responses to stimulus scenes consisting of armored vehicles varying in background (forest, road, or plain) and downlook angle (10 degrees, 20 degrees, or 30 degrees). Positive set size was either one, two, or four vehicles. The results provided support for the serial exhaustive model in the linear set size function with a zero intercept of 1.4 seconds (s) and a slope of .2 s. Parallel functions were obtained for the forest condition adding .2 s over the equivalent road and plain conditions. The 10 degrees downlook angle resulted in the slowest response times, and the 20 degrees angle the fastest. The response times were the fastest for the positive set items only, followed in order by recognition and identification responses. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1980
- Accession Number
- ADA107295
Entities
People
- Richard M. Johnson
Organizations
- U.S. Army Research Institute for the Behavioral and Social Sciences