Two and a half millennia ago, Socrates complained that writing would harm students. With a way to store ideas permanently and externally, they would no longer need to memorize. However, studies today have found that writing on paper can improve everything from recalling a random series of words to better understanding complex concepts.
For learning material by repetition, the benefits of using a pen or pencil lie in how the motor and sensory memory of putting words on paper reinforces that material. The scribbling (涂鸦) on a page feeds into visual memory: people might remember a word they wrote down in French class as being at the bottom-left on a page.
One of the best-demonstrated advantages of writing by hand seems to be in note-taking. Students typing on computers wrote down almost twice as many words directly from lectures, suggesting they were not understanding so much as rapidly copying the material. However, handwriting forces note-takers to process and organize ideas into their own words. This aids conceptual understanding at the moment of writing, resulting in better performance on tests.
Many studies have confirmed handwriting's benefits, and policymakers have taken note. Though America's curriculum from 2010 does not require handwriting instruction past first grade (roughly age six), about half the states since then have required more teaching of it. In Sweden there is a push for more handwriting and printed books and fewer devices. England's national curriculum already includes the teaching of basic cursive writing (连写体) skills by age seven.
However, several school systems in America have gone so far as to ban most laptops. This is too extreme. Some students have disabilities that make handwriting especially hard. Nearly all will eventually need typing skills. Virginia Berninger, professor of psychology at the University of Washington, is a longtime advocate of handwriting. But she is not a purist; she says there are research tested benefits for "manuscript" print-style writing but also for typing.
Socrates may or may not have had a point about the downsides of writing. But no one would remember, much less care, if his student Plato had not noted it down for the benefit of future generations.