For the laboratory usability test, the scenario was made known to
the participant via the briefing script and the task scenario
description sheet. The participants would have to think that he or
she was in that situation. For the field usability test, the participants were in the scenario setting itself but had to act
according to the instruction for each task.
The correspondent received a set of instructions for the
correspondent to react or initiate an interaction with the
participants. The test monitor prepared a set of scripts used to
brief the test subjects for consistency. The participants received
the Consent Form, Task Scenario, Pre-test and Post-test
Questionnaire. The various documents were designed based on
the various guides and references from research.
The usability testing and data-logging method used was thinking
aloud. This method was introduced to each participant and they
get a chance to practice think aloud prior to the actual test. The
entire test session was audio and video recorded.