Martin claims to have 16 different personalities, each with its own unique traits and memories, ...

Martin claims to have 16 different personalities, each with its own unique traits and memories,
   living inside him. If his claims are accurate, he is suffering from ______.
 
  a. schizophrenia c. depersonalization disorder
   b. schizoid personality disorder d. dissociative identity disorder

Question 2

The term ______ is now used to describe what used to be called multiple personality disorder.
 
  a. schizotypal personality disorder c. dissociative identity disorder
   b. depersonalization disorder d. schizoid personality disorder

Question 3

About ______ percent of the IQ scores of any population on the Wechsler scales lie
   within the range of 90-110
 
  a. 30 c. 70
   b. 50 d. 90