If we wanted to make a scale that had high internal-consistency reliability but still had good content validity,which of the following would we need to have?
1)Items that are substantially correlated with each other
2)Items that together cover all aspects of the intended characteristic
3)Items that are all virtually uncorrelated with each other
4)Items that all focus on the same specific aspect of the intended characteristic.

Question

Quizplus · Accepted Answer

For a scale to have high internal-consistency reliability, its items need to be substantially correlated with each other, implying that they measure the same underlying construct or trait. To ensure content validity, the items should together cover all aspects of the intended characteristic or construct, which is why we need items that are both highly intercorrelated and comprehensive in scope. Therefore, the correct combination of options is (1) and (2). Option (3) is incorrect, as uncorrelated items would not contribute to internal consistency, and option (4) is also incorrect, as the focus on a single aspect would reduce the scale's content validity.

If We Wanted to Make a Scale That Had High