How to Improve Your IQ Score: What Actually Works

The honest answer: IQ is more malleable than most people think, but only if you train the right way. Research on cognitive training shows small but real gains in fluid intelligence when the training is deliberate, sustained, and targets working memory and reasoning.

What actually works

• Dual n-back training: Studies (Jaeggi et al., 2008) show working-memory training can transfer to fluid reasoning tasks. 15–20 minutes daily for 3+ weeks.
• Deliberate practice on reasoning puzzles: Not just games — actual problems that stretch you: matrix reasoning, syllogisms, spatial rotation. Difficulty matters more than time spent.
• Reading widely and hard: Vocabulary and general knowledge feed crystallized intelligence, which is a huge component of most IQ tests.
• Sleep: Sleep-deprived brains lose 10–15 IQ points on measurement, easily. Fix sleep first.
• Exercise: Aerobic exercise increases BDNF, a protein linked to neuroplasticity. 30 minutes 3x a week has measurable cognitive benefits.

What doesn't work

Brain training apps like Lumosity showed strong marketing but weak evidence for real IQ transfer (the FTC fined them $2M in 2016 for overclaiming). Passive activities — puzzle books you rush through, background podcasts — don't build cognitive capacity.

Realistic expectations

You can meaningfully improve your test performance (5–15 points) through practice and better test-taking habits. Your underlying cognitive capacity changes more slowly — expect 6–12 months of consistent effort for durable gains.