The stability of IQ scores ….. (a) is highest in infancy. (b) becomes fairly high starting at around age four. (c) is highest with longer times between testing sessions. (d) is high for individual children but low for large groups of children.

(b) becomes fairly high starting at around age four.

Explanation:

The correct answer is (b) becomes fairly high starting at around age four.

Explanation:

The intelligence quotient (IQ) consists of a score, which is obtained by carrying out a series of tests specially designed to measure their intelligence. It can be said that the validity or reliability of the IQ will be significantly affected by the age of the person when the evaluation is passed at first and the time interval between that measurement and a new one. As the child is older and this period is shorter, the greater the constancy (stability) of the IQ. The reliability and validity of intelligence tests increases according to the age of the subject, being more reliable as the years go by, first those of lactation, then those around the age of four or more in this period children acquire new skills and abilities that allow them to better relate to reality, later those of adolescence and finally, those of adults. The stability of IQ scores has a considerable importance, precisely because of the temporal stability of the QI in children the usefulness and validity of early detection of gifted children is based.

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