試題詳解

31. A test is valid if it measures what it is intended to measure. A test is reliable if it is consistent. Therefore, a test may be consistent even though it does not measure what it is intended to measure.
The writer's primary purpose in this passage is to
(A) contribute to recent research in testing validity and reliability.
(B) question whether we should use the terms valid and reliable to describe tests.
(C) insist that all tests must be both valid and reliable.
(D) explain the difference between validity and reliability.