Explore all articles tagged with "score drift". Discover insights, research, and expert analysis on this topic.
The surprising history of how studying animal cognition influenced the development of modern human intelligence testing methods.
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IQ Test Results
Your IQ score depends on when the test was normed. Learn how normative samples are built, why the WAIS and Stanford-Binet must be updated regularly, and how score drift from the Flynn effect can inflate results by 5-10 points.
Intelligence Research
Your grandparents would score about 15-20 IQ points lower on today's tests -- not because they were less capable, but because of the Flynn effect. Here is a simple explanation of why IQ scores rise over time, what drives the gains, and why they may be reversing.