Answer: Concurrent Validity
Explanation: When two tests are conducted simultaneously in a bid to validate or establish the truth or fact of a certain experiment. Therefore, Concurrent Validity is a way of measuring criterion validity whereby performance or validity is established by subjecting participants or subjects to different test concurrently or at approximately the same time. Usually the test pitted or interpreted relatively to the outcome or result of a well established result in other to validate the conclusion of the test performed.