PSYC37H3 Lecture Notes - Lecture 5: Educational Testing Service, Antivirus Software, Concurrent Validity
Document Summary
A test is valid to the extent that inferences made from it are appropriate, meaningful, and useful - us trying to get evidence as researchers to see if the test measures what it is really supposed to measuring. A unitary concept is determined by the extent to which a test measures what it purports to measure. Begins with test construction and continues indefinitely - designing the test. Test validity hinges upon the accumulation of research findings. For example, transition from the third to the fourth edition of the wechsler adult. Content validity = d/(a + b + c + d) Divide the number of times people agree by all other possibilities. Content validity = 87 / (4 + 4 + 5+ 87) = 0. 87. A test has face validity if it looks valid to test users, examiners, and especially the examinees.
