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AI-written stories fool readers just fine. It is knowing that ruins it, study finds

Participants correctly guessed human writing only 39% of the time, and in another test after AI became more common only 52% of the time

Participants had to rate two stories on similar themes, one of them AI-Generated. (Photo: Generated using AI)Participants had to rate two stories on similar themes, one of them AI-Generated. (Photo: Generated using AI)
Written by: Aishwarya Khosla
7 min readAug 17, 2026 06:11 AM IST First published on: Aug 14, 2026 at 10:01 AM IST

Over the past 18 months, a string of literary scandals—from withdrawn books and publishing deals to allegations of misconduct and an AI controversy involving the Commonwealth Short Story Prize—has shaken the publishing industry and deepened anxieties over the credibility of the written word.

While authors in the UK have sought labelling of human-written writing, and Substack has introduced an AI-detection tool that allows readers to check the provenance of any post they come across, many AI-savvy readers pride themselves on being able to detect synthetic text in a single read.

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A new study, published online on August 5 in the journal Judgment and Decision Making (Cambridge University Press), however, reveals that readers prefer machine-generated stories over those penned by a human author as long as they do not know that the work of fiction has been generated using AI. Once they know a work is AI-generated, they tend to penalise it.

The paper, “Bot or not: Can people tell the difference between stories written by a human or by an AI system?”, was authored by Sydney Sears and Dr Deena Skolnick Weisberg of Villanova University. As many as 2,587 people, all from the United States, participated across three experiments. The study involved pitting three short stories published in established literary journals against three similar stories generated with the help of OpenAI’s ChatGPT 4.0.

In the first experiment, participants who read AI-generated fiction judged it to be of superior quality and more absorbing than its human-written counterparts. However, when the same cohort was told they were reading a “human-written story”, they rated it higher, regardless of whether it was AI-generated, which researchers said was a textbook case of “algorithm aversion”.

Aishwarya Khosla spearheads the digital strategy and execution for the Read More

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