AP English Language — Reasoning and Organization — Drill 2

The following text is adapted from a modern essay on the history and social uses of IQ testing. The IQ test was not invented to measure intelligence. It was invented to identify children who needed additional support in French schools — a practical tool for a practical problem, designed by Alfred Binet with the explicit warning that the scores should not be interpreted as a fixed measure of innate ability. Binet died in 1911. By the 1920s, his warning had been almost entirely discarded, and IQ had become, in the hands of American psychologists, a number that supposedly captured the totality of a person's intellectual potential, heritable, immutable, and rankable across racial groups. This transformation — from diagnostic tool to definitive measure — did not happen because the science demanded it. It happened because the culture wanted it. The early twentieth century was a period of intense anxiety about immigration, urbanization, and the perceived dilution of Anglo-Saxon dominance. IQ testing arrived at exactly the right moment to provide a scientific veneer for conclusions that had already been reached on other grounds. The tests did not produce the hierarchy. They laundered it. None of this invalidates the observation that IQ scores correlate with certain outcomes — academic performance, job performance in cognitively demanding roles, even longevity in some studies. These correlations are real and have been replicated across many populations. The question is not whether the scores predict anything. The question is what they measure, and whether what they measure is the fixed, heritable property that the early testing movement claimed it to be. The evidence on this question has accumulated slowly and uncomfortably. Flynn effect research — which documents consistent generational increases in raw IQ scores across dozens of countries — demonstrates that whatever IQ tests measure, it responds to environmental conditions far more dramatically than a fixed genetic property would. Children adopted from low-income to high-income families show substantial IQ gains. Interventions targeting nutrition, lead exposure, and early education produce measurable score increases. If IQ were primarily a measure of innate capacity, none of this should be possible. What IQ tests measure, the best current evidence suggests, is a combination of cognitive skills that are genuinely useful and genuinely trainable — shaped by genetics, yes, but also by nutrition, education, stress, environmental toxins, and accumulated cultural practice. This is a far more useful and far more honest understanding than the one Binet's successors promoted. It is also one that carries different moral implications: if cognitive capacity is partly a product of conditions, then conditions are partly a moral responsibility.