Estimation of intersection of two converging targets as a function of speed and angle of target movement.
Percept Mot Skills 1970 Feb; 30:303-310
The investigation examined the effects of target velocity and angle of approach on the accuracy of intersection estimation of two moving targets. An inferred movement display was utilized in which two rows of lights, flashing serially across the display, simulated two moving targets. Five different target velocities and two angles of approach (30 degrees and 90 degrees) were used. The targets were displayed halfway to the actual intersection point. The subjects, 15 young men, were required to observe the targets until they disappeared and then indicate when he thought they intersected. Each subject was given 100 trials. Raw data in the form of the difference between estimated and actual intersection time were collected and converted to constant and absolute error scores for each trial. In three factor analysis of variance with repeated measures on two variables, target velocity and angle of approach were significant sources of variation. Second order and third order interactions between angle, speed, and subjects were also statistically significant. Time estimation were converted to velocity estimates, and standard deviations of estimates were plotted against mean velocity estimates. A linear function was obtained. (Grant No. T01-OH-00002)
NIOSH-Publication; NIOSH-Grant; Grants-other; Mental-processes; Information-processing; Estimating; Psychological-factors; Statistical-analysis; Convergent
Psychology Univ of South Dakota Dept of Psychology Vermillion, S Dak 57069
Other Occupational Concerns; Grants-other
Perceptual and Motor Skills
University of South Dakota, Vermillion, South Dakota