@article{anllmnativepsychometricinstrumentreveals,
  title = {An LLM-Native Psychometric Instrument Reveals a Self-Report--Behavior Gap Across 25 Models},
  author = {Juan Manuel Contreras},
  year = {2026},
  eprint = {2606.09843},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.09843},
}