Cut the jargon is one of the oldest pieces of writing advice, and it is usually heard as a mild insult to the reader, as if the point were to dumb things down for people who could not keep up. The research on how people actually respond to language says almost the opposite. Plain writing is not a favor you do for slower readers. It makes you look smarter, keeps people reading, and is often harder to pull off than the fancy version. Cutting the jargon, it turns out, is an upgrade rather than a concession.
Big words make you look less smart, not more
Start with the flattering finding. A psychologist named Daniel Oppenheimer ran a set of experiments in which he took pieces of writing and swapped ordinary words for longer, more impressive ones, then asked readers to judge how intelligent the author was. The result was consistent: the fancier the language, the less intelligent the writer seemed, no matter how good the underlying essay was. In a later version he made the text harder to read by using an awkward font, and even that was enough to drag down how clever the author appeared.
The reason is simple. When something is hard to process, our brains quietly read that struggle as a sign that the writer is not thinking clearly, or has nothing solid to say. We tend to blame ourselves for a moment of confusion, but a beat later we blame the source. Oppenheimer also found that most students admitted to deliberately reaching for bigger words to seem smart, which is exactly the move his study shows backfires. Swap utilize for use, or commence for start, and nothing is lost except the effort of getting through it. Short, clear words do not read as simple. They read as confident, as if the writer understands the subject well enough not to hide behind it.
Jargon quietly shows people the door
The second finding is about what jargon does to the reader, and it goes beyond mere confusion. A team led by Hillary Shulman gave people passages about science, some written plainly and some sprinkled with technical terms, and measured how they responded. The jargon made the text harder to take in, made readers feel they understood the topic less, and lowered their interest in it, even when each term was carefully defined right there on the page.
That last detail is the important one. We tend to assume the problem with jargon is that people do not know the words, so defining them should fix it. It does not. Jargon sends a quieter message underneath the meaning, something like this is not for you, and that message makes readers pull back, lose interest, and feel less capable than they are. The words do not just fail to inform. They gently push people out of the room.
What cutting it actually buys you
Put the two findings together and plain language stops looking like a compromise. Writing simply makes you appear more capable, and it keeps your reader engaged and feeling able to follow, which is most of the job. The point was never to shrink the idea. It was to clear away the friction between a good idea and the person on the other end of it.
In practice that means reaching for the shorter word when it will do, explaining a hard concept with a plain example instead of a technical label, and, when a specialist term really is the precise one, earning it by defining it once and using it with care rather than scattering it for effect. It also helps to read a draft aloud, since the places you stumble are usually the places a reader will too. None of this is about having less to say. It is about making sure what you say actually lands with the person meant to receive it.
A couple of honest caveats
Two things are worth adding so this is not overstated. Jargon has a proper home among specialists, where a shared technical vocabulary is genuinely faster and more exact; a surgeon or an engineer talking to another one is not being pretentious, just efficient. The problem is using that vocabulary on an audience that does not share it. And plain is not the same as simplistic. Saying something true and complicated in clear language is harder than dressing it up in long words, not easier, because you cannot lean on the fog to cover the gaps. That difficulty is the whole point.
So cut the jargon is not really an instruction to lower your standards. It is closer to a mark of respect for the reader, and, the research suggests, a quiet sign that the writer understands the thing well enough to say it in words anyone can follow. The clear version is the confident one. The impressive-sounding one usually just gets in the way.