Display-control integrality and heterogeneous dynamics in dual-axis tracking

摘要: Several explanations are possible for the performance decrements which occur when tasks performed concurrently. Capacity theories describe ability of parallel processing up to a certain point at "bottleneck" occurs and serial becomes necessary in order prevent further decrements. The stage bottleneck has come under considerable debate. Ample evidence been cited either perceptual (early) bottlenecks or response (late) depending on task combinations studied. More recent research successful describing limitations as resource effect suggesting that there is competition between scarce resources. An opposing view multiple suggest direct result cross-talk produced by throughputs outputs two tasks. A manual tracking paradigm was designed an attempt determine effects display-control integrality control-per ve heterogeneous controlled element dynamics combined dual-axis . tracking. This used effectiveness existing divided attention predicting dissimilar Twenty-eight male four female subjects (N = 32) were randomly assigned (integrated, separated) displaycontrol configurations, control-order (low,high) conditions. Also, three emphasis conditions studied: equal-emphasis (effort) each axis, 25% effort one 75% other. Data collected analyzed single trials. Root mean square error (RMSE), control speed, hold, controltheory parameters identify source magnitude these Results indicated better RMSE achieved position, velocity, acceleration integrated configuration (p=.050, p=.012, p=.034),