Ricardo is considered to be severely retarded. Therefore, he has an IQ in the range of
Ninety percent of children with IQs below 70 are in which range of mental retardation?
Wesley is mentally retarded. His parents can expect that he will be
A) able to think abstractly.
B) in need of repeated instruction.
C) able to generalize what he has learned.
D) likely to react the same as normal children.
E) physically smaller than the norm.
Which of the following causes of mental retardation is a genetic anomaly?
D) Down syndrome