Jasmine took a self-administered online intelligence test three times yesterday and obtained scores of 124, 128, and 125. This made her feel great because the score she received from the psychologist last month at school was only a 95
What characteristic might the online test be lacking?
A) Reliability
B) Validity
C) Both reliability and validity
D) Nothing, the test appears to have both reliability and validity.
Answer: B
Rationale: Validity refers to the degree to which an instrument or procedure actually measures what it claims to measure. In this example, the test is clearly reliable because she received approximately the same score each time. However, because the score is drastically higher than she received on the professionally administered test, it is likely that the online test is not actually measuring her intelligence.
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Allison can solve problems that are typically solved correctly by other children who are eight years old. Allison, however, is 10 years of age. According to intelligence tests, Allison's mental age is a. 8
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