Summary: Online Appendix to:
Two-Handed Marking Menus for Multitouch Devices
KENRICK KIN, University of California, Berkeley and Pixar Animation Studios
BJ ĻORN HARTMANN and MANEESH AGRAWALA, University of California, Berkeley
This document contains the full results of the longitudinal study.
A. RESULTS: LONGITUDINAL STUDY
The longitudinal study was performed on the iPod Touch. Summaries of the average
times and accuracies for all conditions are shown in Figure 20. We ran separate two-
way ANOVAs with the factors menu technique and day on the times and accuracy of
A.1. 4-2 Menu Layout
Total Time. By day five, the average total time was 805 ms for 1HR and 682 ms
for 2HS, reduced from 932 ms and 823 ms respectively on day one. Menu technique
(p = .005) and day (p = .009) had significant effects on total time, but there was no
interaction effect (F4,16 = 0.308, p = .869).
Reaction Time. By day five, the average reaction time was 590 ms for 1HR and 533 ms
for 2HS, reduced from 552 ms and 633 ms, respectively. The difference between 1HR
and 2HS reaction times dropped from 81 ms to 57 ms (29.6%). Menu technique (p =
.012) and day (p < .001) had significant effects on reaction time, but there was no
interaction effect (F4,16 = 0.907, p = .483).