Counterarguments in Writing Boost Critical Thinking, AI Judges Agree

A study from arXiv (2605.05353) tested whether writing counterarguments improves critical thinking in the age of Generative AI. Thirty-six students in a university course chose from four thesis statements on popular debates. Using six rubrics (focus, logic, content, style, correctness, reference), three human assessors—two peer reviewers and one experienced teacher—evaluated 35 submissions on a 5-point Likert scale. Six frontier LLMs also judged the same submissions using identical rubrics. The mixed-method design included qualitative feedback and quantitative analysis. Results showed that counterargument writing effectively fosters critical thinking, even when assessed by AI, addressing risks of cheating and cognitive offloading with GenAI.