Which of these is an element of the formal definition of intellectual disability?
A) IQ approximately 2 standard deviations below the mean on a normal curve
B) evidence of brain damage
C) slower than normal reflexes
D) onset of deficits prior to age 6

Question

Which of these is an element of the formal definition of intellectual disability?
A) IQ approximately 2 standard deviations below the mean on a normal curve 
B) evidence of brain damage
C) slower than normal reflexes 
D) onset of deficits prior to age 6

Quizplus · Accepted Answer

Intellectual disability is defined by an IQ approximately 2 standard deviations below the mean, along with deficits in adaptive functioning, and onset during the developmental period.

Which of These Is an Element of the Formal Definition