AI RESEARCH
Evaluation Drift in LLM Personality Induction: Are We Moving the Goalpost?
arXiv CS.CL
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ArXi:2605.16996v1 Announce Type: new Can large language models reliably express a human-like personality, or are they merely mimicking surface cues without a stable underlying profile? To investigate this, we induce personality in LLMs by fine-tuning them on the long-form essays, where each essay is associated with a target Big Five personality profile. We then evaluate the stability and fidelity of the induced personality using the IPIP-NEO questionnaire. Specifically, we ask: (i) does post.