Final answer:
The Minnesota Multiphasic Personality Inventory (MMPI) is a personality assessment that uses true/false questions.
Step-by-step explanation:
The personality assessment that employs a series of true/false questions is the Minnesota Multiphasic Personality Inventory (MMPI). The MMPI is a well-known and widely used psychometric test that assesses personality traits and psychopathology. It consists of over 500 true/false items that measure various aspects of personality and mental health.