Which of the following is not a common IQ test?

The Rorschach Inkblot Test is primarily a projective psychological assessment tool used to measure personality characteristics and emotional functioning, rather than to assess cognitive ability or intelligence. This test involves interpreting inkblot patterns, allowing the test-taker's responses to reflect their thoughts and feelings. In contrast, the other options—Wechsler Adult Intelligence Scale, Universal Nonverbal Intelligence, and Stanford-Binet Intelligence Scale—are all established IQ tests specifically designed to assess various aspects of intelligence, including cognitive abilities and problem-solving skills. Therefore, the correct answer identifies the Rorschach Inkblot Test as the one that does not belong in the category of common IQ tests.