Education & Certifications


  • B.S., Georgetown University, Science, Technology, and International Affairs (2015)
  • M.S., University of Washington, Computational Linguistics (2020)

2023-24 Courses


All Publications


  • Linguistic Affordances Framework: A Linguistic-Sociological Approach for the Social Study of Language Technology SOCIAL SCIENCE COMPUTER REVIEW Lepp, H., Alvero, A. J. 2025
  • Quantifying large language model usage in scientific papers. Nature human behaviour Liang, W., Zhang, Y., Wu, Z., Lepp, H., Ji, W., Zhao, X., Cao, H., Liu, S., He, S., Huang, Z., Yang, D., Potts, C., Manning, C. D., Zou, J. 2025

    Abstract

    Scientific publishing is the primary means of disseminating research findings. There has been speculation about how extensively large language models (LLMs) are being used in academic writing. Here we conduct a systematic analysis across 1,121,912 preprints and published papers from January 2020 to September 2024 on arXiv, bioRxiv and Nature portfolio journals, using a population-level framework based on word frequency shifts to estimate the prevalence of LLM-modified content over time. Our findings suggest a steady increase in LLM usage, with the largest and fastest growth estimated for computer science papers (up to 22%). By comparison, mathematics papers and the Nature portfolio showed lower evidence of LLM modification (up to 9%). LLM modification estimates were higher among papers from first authors who post preprints more frequently, papers in more crowded research areas and papers of shorter lengths. Our findings suggest that LLMs are being broadly used in scientific writing.

    View details for DOI 10.1038/s41562-025-02273-8

    View details for PubMedID 40760036

    View details for PubMedCentralID 5199034

  • You Cannot Sound Like GPT": Signs of language discrimination and resistance in computer science publishing Lepp, H., Smith, D., ACM ASSOC COMPUTING MACHINERY. 2025: 3161-3180
  • Conversational Agents in Language Education: Where They Fit and Their Research Challenges Divekar, R. R., Lepp, H., Chopade, P., Albin, A., Brenner, D., Ramanarayanan, V. edited by Stephanidis, C., Antona, M., Ntoa, S. SPRINGER INTERNATIONAL PUBLISHING AG. 2021: 272-279
  • Pardon the Interruption: An Analysis of Gender and Turn-Taking in US Supreme Court Oral Arguments Lepp, H., Levow, G., Int Speech Commun Assoc ISCA-INT SPEECH COMMUNICATION ASSOC. 2020: 1838-1842
  • Visualizing Inferred Morphotactic Systems Lepp, H., Zamaraeva, O., Bender, E. M., ASSOC COMPUTAT LINGUIST ASSOC COMPUTATIONAL LINGUISTICS-ACL. 2019: 127-131