756
Task 5:“Choose your favorite Starbucks that is closest to you, then set a via
point to find the closest gas station to you. Enter address information, add a via
point, and then engage the revised route.
The tasks were performed in an identical sequence for every user in order of
assumed difficulty with the user employing a speak-aloud protocol. Each interface
test was counterbalanced with the other to minimize experience-based preferences.
The general observations, click paths, prompts, errors, mouse movements, time-on-
task and usability challenges were recorded.
3. FINDINGS
The users were given an exit survey
after testing each interface.
The Tabular interface had an error sum of 66, and the Linear interface had an
error sum