When an interview is conducted in-person, interviewers should wait until after an interview is completed to record responses, so as not to appear disinterested

The child's peak level of cognitive/linguistic performance is known as:

A) linguistic aptitude. B) mastery motivation. C) microgenetic potential. D) zone of proximal development.

One of the characteristics of Lesch-Nyhan syndrome is that

A) it only occurs in girls because it is a recessive trait requiring two X chromosomes. B) it only affects boys since the genetic mutation is found on the Y chromosome. C) nearly all children who develop the disorder have severe, chronic self-injurious behavior. D) as with phenylketonuria, children require a strict dietary regimen until age 8 to prevent intellectual disability.