Steering Performance with Error-accepting Delays
The ACM CHI Conference on Human Factors in Computing Systems (CHI 2019), 2019/5
- In steering law tasks, deviating from the path is immediately considered an error operation. However, in navigating a hierarchical menu item, which is a representative application of the law, a deviation of a short duration is sometimes permitted. We tested the validity of the steering law with various durations of such error-accepting delays and found that the model showed high fits for each delay condition (R^2 > 0.96) but poor fits if the delay values were not separated (R^2 = 0.58). Because the average movement speed linearly increased as the delay increased, we refined the model taking the delay into account, and the fitness was significantly improved (R^2 = 0.97) as a result. The new model helps GUI designers estimate the average operational time on the basis of the menu item length, width, and error-accepting delay.
Steering Performance with Error-accepting Delays（外部サイト／External Site Link）