RT conference output T1 From Black Box to Glass Box: GenAI in Non-STEM Computing Education A1 Gutiérrez Madroñal, Lorena A1 Caballero Hernández, Juan Antonio A1 Baena Pérez, Rubén A1 Palomo Duarte, Manuel A2 Ingeniería Informática K1 Generative AI K1 Prompt Engineering K1 Glass box K1 Non-STEM K1 Higher Education K1 Introductory Computing AB The rapid integration of Generative AI into higher education challenges traditional assessment integrity. This quasi-experimental study analyses its impact on web development skills within an Advertising and Public Relations degree. Drawing on academic performance data, transparency logs, and student perception surveys across four distinct cohorts, the research traces the evolution from a pre-AI baseline through unregulated adoption to a regulated Glass box intervention. Quantitative analysis reveals that while unregulated adoption led to mark inflation, the Glass box protocol stabilised performance. Granular data exposes a dual impact: Generative AI hindered accuracy in foundational tasks due to unverified corrections, yet eliminated resubmissions in complex tasks. The paper contributes evidence-based guidelines for designing non-STEM assessments, demonstrating how Chain-of-Thought documentation converts GenAI from a threat into a verifiable auxiliary tool. PB Springer, Cham SN 978-3-032-37982-5 YR 2026 FD 2026-10-06 LK http://hdl.handle.net/10498/40370 UL http://hdl.handle.net/10498/40370 LA eng NO Proyecto GENIALLE (ref. PID2023-149674OB-I00) de MICIU/AEI/10.13039/501100011033 y ERDF (EU). DS Repositorio Institucional de la Universidad de Cádiz RD 06-nov-2026