How to Improve Your IQ Score: 9 Science-Backed Ways to Sharpen Your Thinking

If you’ve ever wondered whether you can actually get better at the kind of thinking IQ tests measure, the honest answer is: sort of, and it depends what you mean by “better.” You’re probably not going to turn a 100 into a 140 through lifestyle changes alone. But you can sharpen the underlying skills these tests sample: working memory, pattern recognition, processing speed, verbal reasoning, and spatial reasoning. Those skills respond to practice and to how well you’re treating your brain day to day, and that’s genuinely useful even if the number on a test report doesn’t move much.

Before we get into the habits, it helps to know where you’re starting. If you haven’t already, take our free IQ test to get a starting baseline. That way you’re not guessing whether any of this is helping later on, you’ll have an actual number to compare against.

What “improving your IQ” actually means

Adult IQ, as measured by standardized tests, is fairly stable over time. Psychologists who study intelligence generally treat it as one of the more consistent traits we can measure, especially once you’re past your twenties. That doesn’t mean nothing can change. Performance on any given test day is affected by sleep, stress, familiarity with the question formats, and general cognitive fitness, and all of those are things you have some control over.

So the realistic goal here isn’t “permanently add 15 points to my IQ.” It’s closer to: perform nearer to your actual ceiling, get more comfortable with the reasoning patterns these tests use, and build cognitive habits that support sharper thinking generally. None of the nine methods below are gimmicks or shortcuts. They’re just habits that cognitive science keeps coming back to when researchers look at what supports better attention, memory, and reasoning.

1. Prioritize sleep quality, not just quantity

Sleep is probably the single most underrated lever for cognitive performance, and it’s not close. During sleep, particularly the deeper stages, your brain consolidates memories and clears out metabolic waste that builds up during waking hours. Skimp on sleep and the effects show up almost immediately in attention, working memory, and processing speed, which happen to be exactly the domains IQ tests probe.

In practice, this means treating sleep as a non-negotiable part of your routine rather than something you sacrifice when life gets busy. Aim for a consistent schedule (same bedtime and wake time, even on weekends), keep your room dark and cool, and cut caffeine at least six hours before bed. If you’re planning to take a cognitive test of any kind, including a practice IQ test, a good night’s sleep beforehand will do more for your score than almost any last-minute cramming.

2. Get regular aerobic exercise

There’s a solid body of research linking regular aerobic activity, things like brisk walking, running, cycling, or swimming, to improvements in executive function and processing speed. The proposed mechanism involves increased blood flow to the brain and support for neuroplasticity, the brain’s ability to form and strengthen neural connections. Exercise also tends to improve sleep and reduce stress, which compounds the benefit.

You don’t need to become an athlete for this to matter. Most research points to moderate, consistent activity, something like 150 minutes a week, as being enough to see cognitive benefits. If you’re short on time, even a 20 to 30 minute walk before a demanding mental task can measurably sharpen focus in the short term.

3. Practice pattern and matrix reasoning specifically

This is the one place where “practice makes you better at the test” is both true and completely honest to say. IQ tests lean heavily on matrix reasoning, the kind of question where you’re shown a grid of shapes with one missing and asked to pick what completes the pattern. Getting familiar with how these puzzles are constructed (rotation, symmetry, added or subtracted elements, alternating sequences) genuinely improves your speed and accuracy on that specific question type. That’s a well-documented practice effect, not a myth.

The way to apply this is straightforward: work through matrix and pattern-recognition puzzles regularly, and pay attention to the logic behind each one instead of guessing until you get it right. Books of logic puzzles, dedicated apps, and practice sections on IQ-style tests all work. The goal isn’t to memorize answers, it’s to internalize the handful of transformation rules test-makers reuse, so your brain recognizes them instantly instead of puzzling them out from scratch.

4. Read widely to build vocabulary and verbal reasoning

Verbal reasoning sections test more than vocabulary size, but vocabulary is a big part of it, and vocabulary is one of the most reading-responsive skills there is. Reading exposes you to words in context repeatedly, which is a far more durable way to learn them than memorizing definitions from a list. It also trains you to follow logical structure in an argument, spot analogies, and infer meaning from surrounding text, all of which show up directly in verbal reasoning questions.

The trick is variety. Reading only within one genre gives you a narrower vocabulary and a narrower set of argument structures than reading across fiction, nonfiction, and long-form journalism. Try to read something a bit outside your comfort zone each week. When you hit an unfamiliar word, try to infer its meaning from context before looking it up. That inference step is itself a form of verbal reasoning practice.

5. Learn a genuinely new, difficult skill

Learning something completely new, a language, an instrument, a craft with real technical depth, forces your brain to build new neural pathways in a way that reviewing familiar material doesn’t. Research on cognitive training generally suggests that the biggest gains come from tasks that are unfamiliar and effortful, not ones you’ve already mastered.

For this to actually help, the skill needs to stay challenging over time. Learning a language, for instance, exercises working memory (holding grammar rules in mind while constructing a sentence), pattern recognition (spotting grammatical structures), and processing speed (parsing sentences in real time) all at once. Pick something that stretches you a little more each week rather than a hobby you can coast through once you’ve learned the basics.

6. Actively reduce chronic stress

Chronic stress is quietly corrosive to cognitive performance. Sustained high cortisol is associated with impaired working memory and slower processing speed, and it tends to narrow attention in ways that make pattern recognition and flexible reasoning harder. Walking into an IQ test anxious and depleted will cost you points that have nothing to do with your actual reasoning ability.

Practical stress reduction doesn’t need to be complicated. Regular exercise (see above) helps, as does consistent sleep, but so do more direct tools: short daily mindfulness or breathing practice, limiting doomscrolling, and building in actual downtime rather than filling every gap in your schedule. If you’re preparing for a cognitive test specifically, a calm, well-rested state on test day is worth more than an extra hour of last-minute drilling the night before.

7. Use spaced repetition instead of cramming

If you’re practicing pattern recognition, vocabulary, or logic puzzles, how you schedule that practice matters almost as much as doing it at all. Spaced repetition, reviewing material at increasing intervals over days and weeks rather than in one dense session, is consistently associated with better long-term retention than cramming. Cramming can boost short-term recognition, but it fades fast, while spaced practice builds something closer to durable skill.

In practice, this might mean doing a short set of matrix reasoning puzzles three times a week over a month, rather than doing a hundred of them in one sitting the day before a test. Flashcard apps that use spaced-repetition algorithms are a good tool for vocabulary building, and the same logic applies to any reasoning skill you’re trying to strengthen: little and often beats occasional and intense.

8. Limit multitasking to protect your working memory

Working memory, your capacity to hold and manipulate information over a short span, is one of the components IQ tests measure most directly, and it’s also one of the most fragile in daily life. Heavy multitasking, constantly switching between tabs, notifications, and conversations, appears to degrade working memory capacity over time and definitely hurts performance in the moment. Every switch costs mental overhead to reload context, and that overhead adds up.

The fix is less about willpower and more about environment. Turn off notifications during focused work, batch email and messaging into set windows rather than checking continuously, and try single-tasking for blocks of 25 to 50 minutes at a stretch. If you’re specifically practicing reasoning puzzles or vocabulary, do it somewhere quiet and undistracted. You’ll retain more from a focused 20 minutes than a scattered 60.

9. Stay socially engaged and have real conversations

Social interaction is an underrated form of cognitive exercise. A genuine conversation, especially with people who see things differently than you do, requires real-time verbal processing, following someone else’s logic, and constructing a coherent response on the fly. Research on aging and cognition consistently finds that socially engaged people tend to maintain sharper cognitive function than isolated people, and while that relationship is hard to untangle fully, the mechanism (frequent, effortful mental exercise through conversation) is plausible on its own terms.

This doesn’t require anything formal. Regular conversations with people outside your usual circle, joining a discussion group or book club, or even debating ideas with friends all count. The key ingredient is that the conversation actually challenges you to think, rather than being pure small talk. Passive social media scrolling doesn’t offer the same benefit, since it typically doesn’t require the same kind of live verbal reasoning.

Putting it together

None of these nine habits work like a switch. They’re closer to compound interest: small, consistent inputs that add up to a sharper, more flexible mind over weeks and months. Sleep and exercise support the biological hardware. Deliberate practice, spaced repetition, and reading build the specific skills tested. Reducing stress and multitasking protect the working memory you already have. Learning something hard and staying socially engaged keep your brain doing real, effortful work instead of coasting.

A reasonable way to use all this: take our free IQ test now if you haven’t, pick two or three habits from this list that you can realistically sustain, work at them consistently for a month or so, and then retake the test after a few weeks of practice to see how you’re doing. Don’t expect a dramatically different overall score. Do expect to feel faster and more confident on the pattern and verbal sections, which is really the point.

Frequently asked questions

Can you actually raise your IQ score permanently?

Adult IQ tends to be fairly stable, and there’s no reliable evidence that lifestyle changes alone produce large, permanent increases in the underlying trait. What these habits can do is help you perform closer to your genuine potential and get more comfortable with the specific question formats IQ tests use, which often shows up as a real improvement in test performance even if your underlying reasoning ability hasn’t fundamentally changed.

How long does it take to see improvement from practice?

It varies a lot by person and by how consistently you practice, but most people notice they’re faster and more confident with pattern and logic puzzles within a few weeks of regular, spaced practice. Building vocabulary and verbal reasoning through reading tends to be a slower, more gradual process measured in months rather than weeks.

Do brain-training apps actually work?

They can help with the specific tasks you practice in the app, which is useful if those tasks resemble what’s on an IQ test, but the evidence that generic brain-training games produce broad improvements in overall intelligence is weak. You’re generally better off practicing the actual question types (matrix reasoning, verbal analogies, number sequences) rather than unrelated games.

Does diet affect IQ test performance?

Diet doesn’t have strong evidence behind it as a way to raise IQ directly, but poor sleep, dehydration, and low blood sugar can all hurt attention and processing speed on the day of a test. Eating a normal, balanced meal and staying hydrated before a cognitive test is a sensible precaution even if it’s not a performance hack on its own.

Is it worth retaking an IQ test after practicing these habits?

Yes, mainly as a way to track your own progress and see which areas (working memory, pattern recognition, verbal reasoning) have shifted the most. Just keep in mind that some improvement on a retake is expected purely from familiarity with the format, so don’t read too much into a modest score change either way.

What’s the single most impactful habit on this list?

If you can only pick one, sleep is usually the best starting point, since sleep deprivation has an immediate, well-documented negative effect on attention, working memory, and processing speed. That said, the habits on this list work best in combination rather than in isolation.