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Asking AI to Act Like an Expert Can Make It Less Reliable

Summary by TechXplore
To get the best out of AI, some users tell it to provide answers as if it were an expert. Others ask it to adopt a persona, such as a safety monitor, to guide its responses. However, this approach can sometimes hurt performance, according to a study available on the arXiv preprint server.

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Researchers from the University of Southern California have just published an improbable study: asking an AI model to play the experts degrades its performance on the factual tasks. Starting a quick by "You are an expert in programming" produces less good results than asking the question directly. The trap of "You are an expert" The study, entitled "Expert Personas Improve LLM Alignment but Damage Accuracy", measured the impact of the role instr…

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Korben broke the news in on Wednesday, March 25, 2026.
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