Usability Testing

Usability testing is the process of attempting to identify discrepancies between the user interfaces of a product and the human engineering requirements of its potential users.
It often involves evaluation of a product's presentation rather than its functionality.
Usability testing is considered a validation activity rather than a verification activity, because it requires a real user to interact with the end product.
Usability characteristics which can be tested include the following.
Accessibility, Responsiveness, Efficiency, Comprehensibility

The usability test process is as follows:

• Define the objective of the test.
• Define the subjects precisely and recruit them.
• Plan the tests and develop all necessary materials.
• Put subject in a workroom or lab with their workstations, possibly using video cameras and a one-way window to an observation room.
• Conduct the test.
• Using video cameras and/or human observers, record the subject's every word and gesture.
• Experts and developers analyze results and recommended changes.