At age 8,Anna takes an intelligence test and is found to have an IQ of 100.Two years later,Anna again takes the same test.If Anna is typical,you would predict that her IQ score on the second test would be about:
A)80.
B)100.
C)120.
D)140.

Question

Quizplus · Accepted Answer

The typical range for IQ scores is within 15 points of 100, so it is likely that Anna's IQ score on the second test would also be around 100. IQ scores are generally stable over time, especially when there are only two years between tests. Therefore, it is unlikely that Anna's score would drop significantly or increase dramatically.

At Age 8,Anna Takes an Intelligence Test and Is Found