Can You Actually Raise Your IQ?

Type this question into any search bar and you will get two loud camps. One says IQ is fixed for life. The other sells an app that promises to add twenty points. Both are overselling. The real picture sits in between, and it is more useful than either extreme.

What is fairly stable

Your relative standing tends to be reasonably steady across adulthood. If you scored above average at 20, you will probably score above average at 40. That stability is one reason the test is taken seriously. It is not measuring a mood.

What can change

Scores are not carved in stone either. A few things genuinely shift them:

• Education. More time in school reliably nudges scores up. Learning to reason is a skill like any other.
• Practice with the format. Familiarity removes the friction that costs points on a first attempt.
• Health and sleep. A rested, healthy brain performs closer to its ceiling.
• Removing barriers. Fixing poor nutrition or an undiagnosed vision problem can reveal ability that was always there.

What does not work as advertised

Brain-training games are the classic example. Practice a specific game and you get better at that game. The improvement rarely transfers to a broad, general ability. You end up an expert at the puzzle, not a smarter person. That is not nothing, but it is not what the ads imply.

The skills that transfer are the boring ones: reading widely, learning hard things, and sleeping enough.

A better goal than the number

Chasing a higher score is a shaky motivation because the number moves slowly. Chasing capability is better. Read outside your usual lane. Take on problems that are a little beyond you. Learn a skill that forces you to think in a new way. Do that for a year and you will be sharper, whether or not the test ever shows it. And often, it does.