To establish concurrent validity, a researcher must include which of the following in a survey that includes a new index of depression:
A) A system for weighting responses
B) Multiple forms of the same index
C) A previously validated measure of depression
D) Single items and matrix questions
E) Open-ended questions that ask for details about responses

Question

Quizplus · Accepted Answer

To establish concurrent validity, the new index of depression must be compared to a previously validated measure of depression. This allows the researcher to determine if the new index is measuring the same construct as the established measure. A system for weighting responses, multiple forms of the index, single items/matrix questions, and open-ended questions may be useful in other aspects of the research, but they are not necessary for establishing concurrent validity.

To Establish Concurrent Validity, a Researcher Must Include Which of the Following