A fifth-grader has an intelligence quotient (IQ) of 130. If the test is reliable and valid, at age 50, that person's IQ:
A) will still probably be about 130.
B) will be lower than 130.
C) will be higher than 130.
D) cannot be predicted, as IQ scores normally shift a good deal from childhood to adult life.

Question

Quizplus · Accepted Answer

Research has shown that IQ scores tend to remain stable over time and are reliable predictors of academic and professional success in adulthood. Therefore, it is likely that a person with an IQ of 130 in fifth grade would still have a similar IQ at age 50.

A Fifth-Grader Has an Intelligence Quotient (IQ) of 130