There are several standardized IQ tests that are commonly used for testing purposes. Some of the most well-known and widely used tests include the Wechsler Adult Intelligence Scale (WAIS), the Wechsler Intelligence Scale for Children (WISC), and the Stanford-Binet Intelligence Scales. These tests have been rigorously developed and standardized to ensure accuracy and reliability in measuring an individual's intelligence. Other tests such as the Kaufman Assessment Battery for Children (KABC) and the Woodcock-Johnson Tests of Cognitive Abilities are also commonly used in IQ testing. It is important to note that while these tests are considered standard, they are not the only measure of intelligence and should be interpreted in conjunction with other factors such as personal experiences and cultural background.