Additionally, one needs to examine concepts such as the level of logical reasoning necessary to interpret the items. In order to determine the level of content validity, one has to examine whether the scale is developed appropriately in that he/she has to examine items such as the level of reading necessary to understand the items and respond appropriately. Criterion validity is established based on the extent to which a scale corresponds to a pre-defined criterion and construct validity is established when a researcher engages in a series of activities that simultaneously defines a construct and develop a scale to measure the developed construct (Kaplan & Saccuzzo, 2005, 149-150). Content validity is established based on the extent to which a scale reflects the intended domain of content (Carmines & Zeller, 1991, 20).
0 kommentar(er)
