Final answer:
An empirically derived test, such as the MMPI, uses standardized items proven to distinguish between different groups of people for personality assessment.
Step-by-step explanation:
A personality inventory that utilizes only those items that have been shown to differentiate particular groups of people is called a(n) empirically derived test. The most notable example of this kind of test is the Minnesota Multiphasic Personality Inventory (MMPI), which fits the description as it applies a standardized series of true/false questions to identify patterns of psychological conditions. Unlike self-report inventories and projective tests such as the Rorschach Inkblot Test or the Thematic Apperception Test (TAT), empirically derived tests like the MMPI have been developed through research that statistically compares large groups of people.