Is IQ Really Fixed?

Why intelligence is more flexible than you think

The idea that your IQ is set in stone from birth is deeply ingrained, but it's not the whole picture. Research shows that IQ scores can and do change over time, influenced by education, environment, and the experiences you seek out.

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Studies tracking people over years have documented meaningful shifts in IQ, especially during adolescence and early adulthood. Factors like quality of education, cognitive engagement, and even nutrition play a role. Your intelligence isn't a single number stamped on you at birth. It's something that responds to how you live and what you practice.

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IQ Is Fixed

Related Research

Ramsden, S., Richardson, F. M., Josse, G., Thomas, M. S. C., Ellis, C., Shakeshaft, C., Seghier, M. L., & Price, C. J. (2011). Verbal and non-verbal intelligence changes in the teenage brain. Nature, 479(7371), 113–116.