Title
Evaluating fitts' law performance with a non-ISO task.
Abstract
We used a target-selection task to evaluate head-tracking as an input method on a mobile device. The procedure used a non-ISO Fittsu0027 law task since targets were randomly positioned from trial to trial. Due to a non-constant amplitude within each sequence of trials, throughput was calculated using two methods of data aggregation: by sequence of trials using the mean amplitude and by common A-W conditions. For each data set, we used four methods for calculating throughput. The grand mean for throughput calculated using the division of means and the adjustment for accuracy was 0.74 bps, which is 45% lower than the value obtained using an ISO task. We recommend calculating throughput using the division of means (and not the slope reciprocal from the regression model) and with the adjustment for accuracy. We present design recommendation for non-ISO tasks: Keep amplitude and target width constant within each sequence of trials and use strategies to avoid or remove reaction time.
Year
Venue
Field
2017
Interacción
Reciprocal,Fitts's law,Regression analysis,Input method,Simulation,Computer science,Grand mean,Algorithm,Human–computer interaction,Throughput,Amplitude,Data aggregator
DocType
Citations 
PageRank 
Conference
1
0.37
References 
Authors
6
4
Name
Order
Citations
PageRank
Maria Francesca Roig-Maimó1133.75
I. Scott MacKenzie24789729.33
Cristina Manresa-Yee312020.73
Javier Varona421123.38