Final answer:
The Thematic Apperception Test (TAT) is the most famous projective technique, which uses ambiguous images to elicit stories that reveal unconscious desires and fears.
Step-by-step explanation:
The most famous projective technique is the Thematic Apperception Test (TAT). The TAT is a type of projective test where individuals are shown ambiguous images and are asked to tell a story about each picture. Their stories provide insight into their social world, uncovering hopes, fears, interests, and goals, and revealing unconscious personal details. Despite its low to modest reliability and validity scores, and the near absence of standardized administration among clinicians, the TAT remains one of the most widely used projective tests. The Minnesota Multiphasic Personality Inventory (MMPI) is not a projective test but a self-report inventory that uses a series of true/false questions to establish a clinical profile for an individual.