Final answer:
Exner's research helped standardize the Rorschach Inkblot Test, making it a reliable measure for psychological assessment, specifically for depression, psychosis, and anxiety.
Step-by-step explanation:
Research by Exner and others has shown that the Rorschach Inkblot Test has been standardized using the Exner system, which is effective in measuring psychological variables such as depression, psychosis, and anxiety. The Rorschach test is a projective test that utilizes inkblots to reveal a person's unconscious feelings and struggles. When scored using the Exner scoring system, the Rorschach is considered a valid and reliable method for such psychological assessments. This contrasts with self-report inventories, which directly ask questions of the test-taker. Projective tests like the Rorschach are less prone to intentional manipulation by participants because it's harder to discern what a "good" answer might be, making them useful tools in psychological evaluation.