The Claim
AI-generated texts contain more complex and difficult vocabulary and a higher proportion of content words than human-written essays, while human-written essays use a higher proportion of simpler, function-oriented words.
What the research says
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AI-written text uses harder words and more content-heavy language, while human-written text uses simpler words focused on function and clarity.
See the scientific wording
AI-generated texts use more complex and difficult vocabulary and a higher proportion of content words than human-written essays, while human texts rely more on simpler, function-oriented words, indicating a divergence in lexical strategy that may reflect AI’s training on diverse, high-information datasets versus human prioritization of clarity and context.
When a system processes vast amounts of dense, information-rich text, it learns to favor words that carry precise meaning over words that connect ideas simply. This leads to more complex vocabulary and fewer everyday function words.
What the research says
1 studyStudy: LINGUISTIC DOMAINS: COMPARISON OF TEXTS WRITTEN BY HUMAN AND ARTIFICIAL INTELLIGENCE
AI writing uses fancier, more complicated words because it was trained on lots of dense information, while people write more simply to make things easy to understand and connect ideas smoothly.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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