Controlled
Experiments
•12 subjects
for each interface
•Successful
users: XPFP=178s Salmon=61s
(Maxion & Reeder, IJHCS Special Issue, 2005)
Salmon
% done
XPFP
Tasks
100
75
T
100
25
J
83
58
W
Salmon
Errors
XPFP
0
3
6
16
4
9