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Figure 6.6: Example of testing for validity based
                  on an assessment of construct validity

                         (Results obtained from Ahmad et. al.,
                  (2020))
       Figure 6.7: Schematic diagram that provides a
                  visualization of the concept of
                  discriminant validity

        Figure 6.8: Example of testing for construct
                  validity based on known-groups
                  comparison (Part of the results
                  obtained from Tiong et. al., (2018))
       Figure 7.1: An example of a conceptual
                 framework of user experience
                 dimension that leads to the concept of
                 user’s satisfaction
       Figure 7.2: Example of VAS for measuring pain
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