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3. “Call” the task after a predefined amount of time has passed. Set a time limit, such as 5 minutes. After the time has expired, move on to the next task. In most cases, it is better not to tell the user that you are timing them. By doing so, you create a more stressful, “test-like” environment.


Cover of Measuring the User Experience, 2nd Edition


DAWSON REPORT - mention, as this is what I did