Final answer:
The MMPI used a Likert scale for its scale construction, which is a type of response scale commonly used in self-report inventories.
Step-by-step explanation:
The Minnesota Multiphasic Personality Inventory (MMPI) used a series of true/false questions for its scale construction. This type of scale is known as a self-report inventory, which typically uses multiple-choice items or numbered scales. The Likert scale is a type of response scale commonly used in self-report inventories. It is named after its developer, Rensis Likert, and represents a range of responses from strongly disagree to strongly agree. Therefore, the correct answer is 1) Likert scale.