“You are an expert” persona prompting can harm performance as much as it helps. A new study shows that persona prompting improves alignment with human expectations but can reduce factual accuracy on knowledge-heavy tasks, with effects varying by task type and model. The takeaway is that persona prompting works better on some kinds of tasks than it does in others.
Persona Prompting
Persona prompting is a common way to shape how large language models respond, especially in applications where tone and alignment with human expectations matter. It is…
