Answer: True
Explanation:
The full form of MMPI is Minnesto Multiphasic Personality Inventory which is an assesment tool used to diagnose the mental disorders.
They were develeoped in the 1930s. To improve the result and make it more accurate the tests has me improved many times till date.
It consists of true and false questions which takes about an hour to 90 minutes to complete the whole assessment tests.
Hence, the given statement is true.
