Mind

How strongly does working memory predict IQ?

r = 0.5–0.7 with IQ

Working memory capacity correlates with general intelligence (g) at around r = 0.5–0.7, making it one of the strongest single predictors of fluid IQ. It is a better predictor of academic achievement than conventional IQ tests alone. Working memory is also the primary bottleneck in learning new material.

Source: Oberauer et al. (2005), Cognitive Psychology; Kane & Engle (2002)

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