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InCharacter: Evaluating Personality Fidelity in Role-Playing Agents through Psychological Interviews

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arxiv 2310.17976 v4 pith:U26ZUTHY submitted 2023-10-27 cs.CL

classification cs.CL
keywords rpascharactersincharacteragentsfidelitypersonalitiespersonalitypsychological
verification ladder T0 review T1 audit T2 compute T3 formal
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Role-playing agents (RPAs), powered by large language models, have emerged as a flourishing field of applications. However, a key challenge lies in assessing whether RPAs accurately reproduce the personas of target characters, namely their character fidelity. Existing methods mainly focus on the knowledge and linguistic patterns of characters. This paper, instead, introduces a novel perspective to evaluate the personality fidelity of RPAs with psychological scales. Overcoming drawbacks of previous self-report assessments on RPAs, we propose InCharacter, namely Interviewing Character agents for personality tests. Experiments include various types of RPAs and LLMs, covering 32 distinct characters on 14 widely used psychological scales. The results validate the effectiveness of InCharacter in measuring RPA personalities. Then, with InCharacter, we show that state-of-the-art RPAs exhibit personalities highly aligned with the human-perceived personalities of the characters, achieving an accuracy up to 80.7%.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. LLMs vs. Chinese Anime Enthusiasts: A Comparative Study on Emotionally Supportive Role-Playing

    cs.CL 2025-08 unverdicted novelty 6.0 of 10

    ChatAnime, a new emotionally supportive anime role-play benchmark, reports top LLMs outperforming human enthusiasts on role-playing and emotional support metrics while humans keep the diversity edge.

  2. CogDual: Enhancing Dual Cognition of LLMs via Reinforcement Learning with Implicit Rule-Based Rewards

    cs.CL 2025-07 conditional novelty 6.0 of 10

    A role-playing LLM that reasons about the scene and its own state before responding, trained with two semantic rewards, beats stronger baselines on role-play benchmarks.

  3. Thinking in Character: Advancing Role-Playing Agents with Role-Aware Reasoning

    cs.CL 2025-06 conditional novelty 6.0 of 10

    RAR improves role-playing agents by distilling character-grounded reasoning traces and optimizing the reasoning style to fit the dialogue scene.

  4. X$^3$-OPD: Distilling Reasoning into Large Audio-Language Models via On-Policy Alignment

    cs.LG 2026-07 conditional novelty 5.0 of 10

    X3-OPD improves audio-grounded reasoning by training the audio student on its own rollouts with token-level teacher feedback, using a three-tier paired text-audio corpus.

  5. Simple Prompt Injection Attacks Can Leak Personal Data Observed by LLM Agents During Task Execution

    cs.CR 2025-06 conditional novelty 5.0 of 10

    Prompt injection can make LLM agents leak personal data they observed while executing tasks, with measured attack success rates around 15-20 percent and password leakage much rarer.

  6. Exploring the Impact of Occupational Personas on Domain-Specific QA

    cs.CL 2025-05 conditional novelty 5.0 of 10

    Profession-based personas slightly improve LLM accuracy on science QA, while occupational personality personas often reduce it, even when semantically related.

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