Examination for Professional Practice of Psychology (EPPP) Practice Test

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The Flynn effect refers to what phenomenon regarding IQ?

  1. The tendency for high and low IQ scores to regress to the mean on retesting

  2. The impact of examiner race on the IQ scores of minority children

  3. The increase in average IQ over the last century

  4. The genetic contribution to IQ scores

The correct answer is: The increase in average IQ over the last century

The Flynn effect refers to the phenomenon where there has been a consistent increase in average IQ scores over the past century, across various populations. This increase has been observed in many countries and is thought to be the result of various factors, including improved nutrition, better education, more stimulating environments, and advancements in healthcare. The gain in IQ scores illustrates how intelligence, as measured by standardized tests, can change over time, reflecting societal advancements and changes in lifestyles. In contrast, the concepts related to regression to the mean, the influence of examiner race, and genetic contributions to IQ do not specifically capture the essence of the Flynn effect. While those are relevant topics in the study of intelligence and IQ measurement, they do not encompass the observed trend of rising average IQ scores reflected in the Flynn effect.

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