How to Think Faster, More Efficiently and Accurately

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Last updated May 22, 2023.
Edited and medically reviewed by Patrick Alban, DC. Written by Deane Alban.

Fast thinking is important, but mental processing speed is often less valuable than accuracy. Learn 14 ways to help you think faster and more efficiently.

Do you often think of the perfect snappy comeback … after it’s too late?

Does it take you longer than your colleagues to get your work done?

Do you feel it takes you longer than it should to learn new information or read a book?

Are you the last one in your class to finish an exam?

If so, you’ll be interested to know that you can learn how to think faster and better.

Benefits of Fast Thinking

Most people associate fast thinking with higher intelligence.

This is not necessarily true, but there are still many reasons why thinking faster can be desirable.

Faster thinking can help with many aspects of life:

  • When people are required to think quickly, they report feeling happier, more energetic, more creative, and more self-confident. 
  • Faster thinking can enhance skills critical to success such as planning, goal-setting, problem-solving, and the ability to stay focused on tasks. 
  • When you know you can think fast on your feet, it can make you more comfortable socially, when speaking with customers or clients, or when giving presentations at work.
  • Additionally, research confirms that people who think fast are seen by others as more charismatic
  • Fast thinking can make you a more efficient student who blasts through homework and exams.
  • If you play sports, faster reaction times can lead to better athletic performance.
  • Quick thinking can make you a safer driver.
  • Developing faster thinking can help you stay mentally sharp as you age.

Some Reasons Your Thinking Isn’t as Fast as You’d Like

If your thinking isn’t as fast as you’d like, or as fast as it used to be, it may be due to a variety of health and lifestyle factors.

Health and Lifestyle Factors

Diabetes, smoking, high blood pressure, and other vascular risk factors can starve the brain of oxygen and glucose, resulting in slower thinking. 

Slow thinking can be a lingering side effect of a traumatic brain injury or stroke, or a sign of multiple sclerosis, dementia, or Alzheimer’s. 

It’s also a common symptom of depression


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Many Prescription Medications Can Slow Thinking

Anti-anxiety drugs and antidepressants can impact your ability to think quickly.

One class of drugs known as anticholinergics blocks the activity of acetylcholine, the neurotransmitter associated with memory and learning.

Anticholinergic medications cause brain activity to slow down, leading to memory loss and mental confusion.

" Ironically, there’s evidence that taking modafinil, a favorite “smart drug” among students and biohackers, slows down response times for some mental tasks, including decision-making.

A good clue that a medication is anticholinergic is in the common name of its general classification.

Most anticholinergic drugs belong to groups that start with “anti,” such as antihistamines, antidepressants, antipsychotics, antibiotics, antispasmodics, and antihypertensives.

If you suspect that any of your medications are affecting your thinking, look for them on this list of common anticholinergic medications.

Age and Genes Can Be Factors

Your thinking speed may also be a factor of your age.

Thinking is slower in childhood, then ramps up during the teens and young adulthood, stabilizes during middle age, and ultimately slows down during the senior years.

A clinical study on twins found that genes play a large role in mental processing speed as well. 

Fast Thinking vs Efficient, Accurate Thinking

Your ability to think fast depends on your brain’s processing speed.

Processing speed is defined as the time it takes the brain to take in new information, reach some judgment on it, and then formulate a response.

This input can be visual, auditory, or from any other senses.

For most people, the efficiency and accuracy of thought, rather than speed, are the limiting factors.

Gary L. Wenk, PhD, professor of psychology and neuroscience, is a leading authority on the consequences of chronic inflammation on the brain.

In Psychology Today, Dr. Wenk writes:

“Your brain is probably already functioning almost as fast as is safe. Most of us can push the processing speed a little without risk. Unfortunately, the neural processing speed in our brains is already just a few extra action potentials per second away from a full-blown seizure.” 

So, perhaps the more important goal is to learn how to think more efficiently and accurately, rather than simply faster.

There’s always a push-pull between processing speed and accuracy that psychologists call the “speed-accuracy trade-off.”

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Your thinking, which may feel slow, may be, in fact, more efficient and/or accurate, which is often more important.

Thinking fast isn’t very helpful if you aren’t thinking clearly, accurately, or logically.

Additionally, there’s a potential downside to being a fast thinker.

Fast thinkers are more likely to engage in risky behaviors than those who think more deliberately and slowly. 

13 Ways to Faster, More Efficient Thinking

So, thinking speed isn’t the only factor that determines quality of thought.

Here are some of the best ways to make thinking not just faster, but also more efficient and accurate as well.

1. Make Minor, Unimportant Decisions Fast

The next time you go out to eat, challenge yourself to choose your meal in a minute or less.

Don’t worry if you don’t choose wisely since the consequences are small.

When you really want to make a decision fast, flip a coin

You may find yourself inwardly hoping for one outcome over another which will help you know what you really want.

(This is not the way to make important, life-altering decisions!)

2. Practice Doing Things You Are Good At, Faster

If you play music, learn songs with a faster tempo.

If you do puzzles (like crossword or Sudoku) or play games like chess, set a timer to force yourself to work faster.

See how fast you can do a simple chore like cleaning your desk or preparing a meal.

Don’t try this with something you are just learning as you’ll only get frustrated.

3. Stop Trying to Multitask

I say stop trying because, in fact, we don’t actually multitask.

The brain can’t focus on two tasks at once and, instead, quickly toggles back and forth between tasks.


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  • Helps increase resilience to stress to avoid mental burnout
  • Supplies the brain with the fuel it needs for mental energy

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It’s well documented that attempting to multitask can make you less productive and reduces mental performance, attention span, and ability to learn. 

Get in the habit of giving one task at a time your undivided attention.

Paying attention to just one thing is key to learning and remembering.

4. Get Plenty of Sleep

Getting adequate quality sleep is one of the most important things to do for optimal brain function.

Lack of sleep negatively impacts both thinking speed and accuracy. 

Even moderate sleep loss can affect your mental performance as much as being drunk! 

5. Stay Cool

The latest research shows that mental processing speed goes down as the temperature goes up.

The ideal temperature for optimal thinking seems to be around 72 °F (22 °C). 

6. Meditate

A regular meditation practice builds a more efficient brain by stimulating the formation of new brain cells and neural connections, and by increasing brain plasticity.

Meditation strengthens communication between brain cells which, in turn, speeds up mental processing, enhances the capacity to learn, and improves the ability to concentrate. 

7. Play a Musical Instrument

Musicians have bigger, better connected, more symmetrical brains

Having musical training improves processing speed, cognitive skills, and working memory. 

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8. Give Your Brain a Mental Workout

While any intellectually challenging endeavor can help you stay mentally sharp, there’s evidence that the right kind of brain training program can specifically help you think faster.

The IMPACT study, led by scientists from Mayo Clinic and the University of Southern California, found that BrainHQ’s original brain training program increased auditory processing by 131%. 

The Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) study was the first large-scale trial to show that computerized brain training can improve cognitive function in older adults.

This study concluded that computerized brain training provided long-lasting improvements in memory, reasoning, and processing speed.

Another way to challenge your mental speed is by taking a reputable timed intelligence test, such as the Mensa IQ Challenge.

Mensa is a worldwide organization for people with above-average intelligence.

You must score in the top 2% on an approved IQ test to join.

But anyone can exercise their brain with their free Mensa IQ Challenge.

Take this 35-question test when you have a bit of uninterrupted time; it has a 25-minute time limit.

You can also download Mensa’s official Mensa Brain Test app for iPad or Mensa IQ Check for Android. 

9. Be Socially Active

Communicating via your electronic devices gives you time to ruminate over conversations.

Engaging with others face-to-face in real time, rather than digitally, will force you to think faster.

10. Get Regular Aerobic Exercise

Physical exercise can help you learn and think faster, focus better, and remember more. 

One huge study on over 1 million men found that exercise can actually raise IQ. 

All exercise is good for your brain, but aerobic exercises like walking, jogging, swimming, or biking specifically improve processing speed. 

11. Increase Your Dopamine Level

If you feel mentally sluggish, you may be low in the brain chemical dopamine.

Dopamine is the neurotransmitter of motivation, productivity, and attention.

Faster thinking is linked to higher brain levels of dopamine

12. Chew Gum

The simple act of chewing gum improves mental accuracy, reaction times, and the ability to focus.

It’s believed to work by increasing oxygen levels in regions of the brain responsible for attention. 

13. Get Your Hearing and Eyesight Checked

Most information enters the brain via your eyes and ears.

So, either hearing loss or vision problems can significantly impair your ability to process information quickly.

14 Supplements That Promote Faster Thinking

Another way to promote faster thinking is by taking the right nutritional supplements.

Here’s a look at the supplements that have been shown to improve processing speed, processing accuracy, or both, thus promoting faster, more efficient thinking.

1. Acetyl-l-Carnitine

Acetyl-l-carnitine (ALCAR) is an amino acid that’s the precursor of acetylcholine, the neurotransmitter of memory and learning.

It can improve processing speed, mental clarity, and memory and also works as a fast-acting natural antidepressant

2. Bacopa

Bacopa (Bacopa monnieri) is a traditional herbal brain tonic noted for reducing stress and anxiety, boosting mental energy and clarity, and protecting the brain from aging.

Research on Bacognize®, a patented form of bacopa, has found it to be beneficial for processing speed, focus, short-term memory, and mood.

This ingredient can be found in a some of the better bacopa supplements. 

3. Black Cumin

Black cumin (Nigella sativa) is a culinary spice used in Middle Eastern and Indian cuisine.

When taken as an herbal remedy, it yields modest benefits in processing speed. 

4. Caffeine

Caffeine is the most commonly consumed psychoactive substance.

It speeds up cognition in many ways, including improving verbal processing speed, reaction time, and accuracy. 

If you use caffeine, be mindful that too much can be counterproductive since it can increase stress, anxiety, and insomnia.

All these conditions can impair your ability to think clearly.

5. Citicoline

Citicoline is a naturally occurring compound that increases mental energy and protects the brain from damage, toxins, and aging.

Citicoline supplements can increase processing speed, working memory, verbal learning, and verbal memory. 

6. Fish Oil

Fish oil is usually taken for heart health, but it is equally important for brain health and function.

The omega-3 essential fatty acids found in fish oil can improve mood, memory, memory-related learning, and processing accuracy. 

7. Ginkgo

Ginkgo (Ginkgo biloba) is one of the most popular herbal remedies in the world. 

It has a long history of use in traditional Chinese medicine as a brain tonic.

It enhances both processing speed and accuracy.

8. Lions’ Mane

Lion’s mane (Hericium erinaceus) is both a culinary mushroom and a brain supplement.

It helps to rebuild myelin, a protective coating surrounding nerve fibers that speeds up communication between brain cells

9. Lutein and Zeaxanthin

Lutein and zeaxanthin are antioxidants found in the eye that promote visual processing speed, an important component in visual learning.

10. Phosphatidylserine

Phosphatidylserine (PS) is a fat-soluble amino acid found in high concentrations in the brain.

It is an integral part of healthy brain cell membranes.

PS normalizes levels of important neurotransmitters and stress hormones and can increase both processing speed and accuracy. 

Phosphatidylserine works synergistically with ginkgo, so this is a good combination to take together. 

11. Rhodiola Rosea

Rhodiola rosea is a traditional herb used to increase physical stamina, mental vitality, and longevity.

It’s considered an adaptogen, a substance that increases tolerance to both psychological and physiological stress.

Research shows that it improves processing accuracy, attention, and reaction time. 

12. Vinpocetine

Vinpocetine is a synthetic version of vincamine, a naturally occurring compound found in the periwinkle plant (Vinca minor).

It increases both processing speed and accuracy. 

Vinpocetine works by increasing blood flow, protecting against oxidative damage, reducing brain inflammation, and balancing neurotransmitter levels

13. Vitamin D

Low levels of vitamin D, the sunshine vitamin, have been linked to slower thinking and poorer cognitive function, particularly in seniors. 

Since it’s hard to get adequate sun exposure to sustain optimal levels of vitamin D, you might benefit from supplementation.

14. NT-020

NT-020™ is a proprietary formulation of blueberry, carnosine, green tea, vitamin D3, and red grape extract.

This patented nutrient blend is a key ingredient in a few select brain supplements.

It was found to significantly increase processing speed during a 2-month trial period. 

Only a few supplement manufacturers currently offer supplements that contain this formula. 

Foods and Supplements That Slow Down Thinking

There are a few substances which often slow down thinking that you should avoid.

The herbal remedy lemon balm (Melissa officinalis), which is often taken for stress, anxiety, or insomnia, acts as a natural sedative and leads to a decrease in processing speed. 

Ironically, there’s evidence that taking modafinil, a favorite “smart drug” among students and biohackers, slows down response times for some mental tasks, including decision-making

Sugar, in excessive amounts, slows down communication between brain cells

And finally, it should come as no surprise that alcohol slows your reaction time and your thinking. 

How Fast Is Your Thinking? Take a Mental Speed Test

If you are concerned that your slow thinking is due to a health concern or your medications, talk to your doctor.

But if you’re just curious as to how fast or slow your thinking speed is, Psychology Today offers a Mental Speed Test that you can take for free in just 5 minutes.

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