Does Writing Make You Smarter? What the Research Shows

Does writing make you smarter? Not in the sense of raising your IQ score. No study has shown that people who write a lot are born more intelligent, or that a journal habit adds points to a cognitive test. What research does suggest is narrower and more useful: writing is a tool for thinking. Putting ideas into sentences forces you to choose, order and connect them, and that work can improve how well you understand a subject, how clearly you reason about it, and how you cope with difficult experiences.

The popular version of this story, that "writers are highly intelligent according to science", mixes a few real findings with some overstatements. Below we look at what the studies actually tested, where the evidence is solid, where it has wobbled, and how to use writing in everyday life to think better.

The short answer: writing trains thinking, not IQ

Intelligence researchers usually mean general cognitive ability, measured by tests of reasoning, memory and problem-solving. That ability is fairly stable in adults, and there is no good evidence that taking up writing changes it much. So any headline promising that writing will make you a genius should be read with a raised eyebrow.

Writing affects something different: the quality of the thinking you do on a particular problem. When an idea lives only in your head, it can feel complete while still being vague. The moment you try to explain it on paper, gaps show up. You notice that a step is missing, that two claims contradict each other, or that you cannot name the example you thought you had. Educators call this "writing to learn", and it is one reason essays, lab reports and reflective journals are used in schools. Reviews of school writing-to-learn programmes generally report modest gains, larger when students are asked to reflect on their own understanding rather than simply summarise.

In other words, writing does not make the brain bigger. It gives the brain a workbench.

Handwritten notes and learning: a famous study, then a replication

The best-known study in this area was published in 2014 in Psychological Science by Pam Mueller and Daniel Oppenheimer, under the memorable title "The Pen Is Mightier Than the Keyboard". Students watched TED talks and took notes either by hand or on a laptop, then answered questions about what they had seen.

Laptop users wrote more words and copied the speaker more closely, almost word for word. Students writing by hand could not keep up with the speech, so they had to listen, select and rephrase. On conceptual questions, the ones that asked students to explain or apply ideas, the longhand group scored better. Factual recall was similar in both groups. The study was widely shared as proof that pens beat keyboards.

Science, however, moves on. In 2019 Kayla Morehead, John Dunlosky and Katherine Rawson published a careful replication in Educational Psychology Review, using the same kinds of materials. They did not find the same pattern. In one experiment the handwriting group did slightly better on facts rather than concepts; in another there was no significant difference at all, and on a test two days later the note-taking method made no measurable difference. Students who simply reviewed their notes narrowed the gap even further.

The practical lesson is not "always use a pen". It is that notes help most when they capture the main ideas in your own words. If you type, resist the urge to transcribe. If you write by hand, use the slower pace to summarise and connect.

Expressive writing and coping with hard experiences

A second strand of research comes from the American psychologist James W. Pennebaker, who in the 1980s began asking volunteers to write about upsetting experiences. In the classic set-up, people write for about 15 minutes a day on four consecutive days, exploring their deepest thoughts and feelings about an event, while a comparison group writes neutrally about topics such as their plans for the day. In early studies the expressive writers later made fewer visits to the doctor.

One study often quoted in articles about writing involved professionals who had recently lost their jobs. Stefanie Spera, Eric Buhrfeind and Pennebaker published it in the Academy of Management Journal in 1994. The 63 participants either wrote about their thoughts and emotions around the job loss, wrote about unrelated topics, or did not write. According to the published abstract, those who wrote about the layoff found new jobs more quickly than both comparison groups. Popular accounts usually cite figures of roughly 53% re-employed after eight months versus about 24%; the authors themselves suggested the writing changed people's attitudes to their old job and the search, rather than making them apply for more positions.

Since then the picture has become more nuanced. Expressive writing has been tested for stress, depression symptoms, illness and trauma, with mixed results. Some studies show clear benefits, others show little difference, and it is still not settled who benefits most. Many people feel worse immediately after writing about something painful, even when they feel better weeks later. Writing can be a helpful companion to other support, but it is not a treatment on its own. If difficult feelings are lasting or overwhelming, talk to a doctor or a qualified mental health professional.

Do writers have higher emotional intelligence?

A claim that circulates widely online says that writers score higher in emotional intelligence, and that emotional intelligence (EQ) is now a more accurate measure of overall intelligence than IQ. Neither part holds up well.

Emotional intelligence, popularised by Daniel Goleman's 1995 book of the same name, refers to the ability to recognise, understand and manage emotions in yourself and others. It is a useful idea, but researchers still argue about how to define and measure it. Several meta-analyses have found that once IQ and personality traits are taken into account, EQ scores add only a little, and sometimes nothing, to predicting job performance. Tests of emotional intelligence have not replaced cognitive tests, and many of them rely on self-reports that people can easily inflate.

There is also no large body of research showing that people who write are more empathetic or self-aware as a group. A more defensible claim is that certain kinds of writing, especially reflective writing about yourself and other people, give you practice at naming emotions and seeing situations from more than one angle. Fiction readers and writers often describe exactly that, and it is plausible, but it is a habit you build, not a trait that comes free with a notebook.

Why drafting and revising sharpens your reasoning

Ask any novelist, journalist or academic and they will tell you that the first draft rarely says what they meant. The finished piece usually emerges after several rounds of cutting, reordering and clarifying. That process is where much of the thinking actually happens.

Each round of rewriting asks the same questions a good reasoner asks: What is my main point? What evidence supports it? What would a sceptical reader object to? Which details matter and which are noise? Over time, people who write and revise regularly often get faster at spotting weak arguments, including their own. This is skill and practice, similar to how a chess player improves through games, rather than a sign of innate brilliance.

Writing also extends memory. Psychologists describe working memory as the small mental space where we juggle information in the moment, and it fills up quickly. A page holds far more than working memory can, which is why complicated plans, budgets and arguments become manageable once they are written down.

Common myths about writing and intelligence

• "Studies prove writers are smarter." They do not. The research looks at specific effects of writing tasks on learning or wellbeing, not at the intelligence of writers as people.
• "Handwriting always beats typing." One influential study pointed that way, but a larger replication found small or no differences. How you take notes matters more than the tool.
• "Journaling cures depression or anxiety." Expressive writing helps some people some of the time. It is not a substitute for professional care.
• "EQ matters more than IQ." A catchy line from the 1990s. Current evidence suggests emotional skills are valuable, but they do not outperform cognitive ability as predictors in most studies.

How to use writing to think more clearly

You do not need to be a professional writer to get the benefits. A few simple habits go a long way:

• Summarise after you learn. After a lecture, video or chapter, close it and write five sentences on the main ideas in your own words. Then check what you missed.
• Explain it to an imaginary beginner. If you cannot explain a concept simply on paper, you have found the part you do not yet understand.
• Write before big decisions. List the options, the reasons for and against, and what you would need to believe for each choice to be right.
• Try short reflective writing. Fifteen minutes on a stressful situation, focusing on what happened, how you felt and what it might mean, can help you see it from a distance. Stop if it becomes distressing.
• Revise, even briefly. Reread what you wrote the next day and tighten it. The second look is where clarity comes from.

Writing will not turn anyone into a genius overnight. But as a daily tool for learning, reflecting and reasoning, it is one of the cheapest and most reliable ones we have.

Sources: The Learning Scientists, New findings inform the laptop versus longhand note-taking debate (2019), summarising Mueller & Oppenheimer (2014) and Morehead, Dunlosky & Rawson (2019); Spera, Buhrfeind & Pennebaker, Expressive writing and coping with job loss, Academy of Management Journal (1994); Wikipedia, Expressive writing; Wikipedia, Emotional intelligence.