Author Question: The research of Robert McCall, which evaluated the stability of IQ in a sample of 140 children, ... (Read 72 times)

s.tung · **on:** Jun 22, 2018

The research of Robert McCall, which evaluated the stability of IQ in a sample of 140 children, found that

a. IQ is stable over time.
b. about 50 percent of the sample had fluctuations in IQ that average 20 points.
c. about 50 percent of individuals had increases in IQ.
d. all individuals in the sample showed a decline in IQ.

Question 2

Concerning stability over time,

a. IQ scores become increasingly unstable as one matures.
b. IQ is strongly stable from preschool age and later.
c. IQ is more stable for girls than for boys.
d. IQ is more stable for some individuals than for others.