protologue

Role Prompting

Also called persona prompting, role-play prompting.

Role prompting assigns the model a persona or professional role, such as "You are an experienced tax accountant," to shape its tone, vocabulary, and focus.

Description

Role prompts reliably change style and framing. Evidence that they improve factual accuracy is mixed, with some studies finding gains in reasoning tasks and a large evaluation finding that adding personas to system prompts did not consistently improve performance.

Sources

  1. Kong et al. (2023). Better Zero-Shot Reasoning with Role-Play Prompting.
  2. Zheng et al. (2023). When "A Helpful Assistant" Is Not Really Helpful: Personas in System Prompts Do Not Improve Performances of Large Language Models.

Cite this entry

Protologue. (2026). Role Prompting. In Protologue: A Taxonomy of Prompting and LLM Techniques (v1.0.0, PTL-0016). https://protologue.com/t/role-prompting/

BibTeX
@misc{protologue_role_prompting,
  title = {Role Prompting},
  author = {{Protologue}},
  year = {2026},
  howpublished = {Protologue: A Taxonomy of Prompting and LLM Techniques, v1.0.0},
  note = {Entry PTL-0016},
  url = {https://protologue.com/t/role-prompting/}
}

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