Viktorija Šarkauskaitė

Plausible but Not Valid: A Psychometric Audit of LLMs as Synthetic Survey Respondents

Large language models (LLMs) are increasingly used as synthetic survey respondents, but existing evaluations ask whether answers look plausible at the individual level. We argue the right question is psychometric: do LLMs preserve the joint distribution, latent structure, reliability, mediation pathways, and demographi...