Which of the following is not true about imbecile mentally retarded patients?: (A) They need help for doing their daily activities and manage their affairs, (B) It can be congenital or acquired at times, (C) IQ is between 50-60, (D) They have mental development equivalent to that of 3-4 yrs of age children
Answer is C. Imbecile is mentally retarded patients with IQ is between 25-49. IQ = (Mental age/Chronological age) X 100 Level of intelligence IQ Idiot 0-24 Imbecile 25-49 Moron 50-69 Borderline 70-79 Low normal 80-89 Normal 90-109 Superior 110-119 Very superior 120-139 Near genius > 140 Reference: Kaplon and sadock, 11 th edition, synopsis of psychiatry, 11 th edition, pg no.800