A researcher has found that his new measure designed to assess the conceptual variable of "exoticism" correlates about +.85 with an existing measure designed to assess "unusualness." The researcher needs to worry about the __________ of his measure.
A) random error
B) measurement bias
C) face validity
D) discriminant validity

Question

Quizplus · Accepted Answer

Discriminant validity is concerned with whether a measure that is not supposed to be related to other variables actually is not related to them. In this case, the high correlation between "exoticism" and "unusualness" suggests that the new measure may not be sufficiently distinct from the existing measure, indicating a potential issue with discriminant validity.

A Researcher Has Found That His New Measure Designed to Assess