What does the comparison between the average scores of the original WAIS standardization sample and those of the latest WAIS standardization sample most clearly demonstrate?

Intelligence MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Intelligencepsychology-mcqs › intelligence
Published
26 Aug 2023
Last updated
28 May 2026

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Explanation

Comparing WAIS standardization samples from different periods reveals a consistent increase in average IQ scores, a phenomenon known as the Flynn effect. This effect highlights generational gains in intelligence test performance rather than factors like the general intelligence factor, heritability, or motivation.

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