David Wechsler developed IQ tests for both children and adults. These are very similar to tasks used on the Wechsler Adults Intelligence Scale. Wechsler uses another task called the digit span task. Think back to Module 8b. IQ tests are examples of standardized tests.
Standardized tests are familiar to everyone who has been through the public school system.
In addition, the standardization process includes an evaluation of the quality of the test. These terms are probably familiar to you, although they are easily confused. The reliability of a test refers to how consistent or stable the test scores are. If you take an IQ test on Monday and your IQ is 112 but on Wednesday your IQ is 80, then that test is not reliable. In addition to being reliable, tests should also be valid.