# The Critical Thinking Crisis in the AI Era How AI threatens cognitive skills and what educators can do about it - **Source:** [Nature](https://brifing.si/source/4d850c3b-dd79-4024-bc91-db2571889199) - **Published:** 2026-09-23 - **Original article:** - **On Brifing:** https://brifing.si/s/6172cea9-96a9-41dd-b917-63c914d41b96 ## AI completes entire coursework Tsinghua University professor Lixiang Yan discovered AI could autonomously complete all course assignments, discussions, and assessments without student engagement. His AI agent Codex demonstrated this capability while setting up an online learning platform. This raises fundamental questions about intellectual development when cognitive work is outsourced. ## 90% fear skill erosion A 2025 survey of 1,000+ US faculty members by the American Association of Colleges found overwhelming concern about AI's impact. 90% believe generative AI will diminish students' critical thinking abilities. Parallel global data shows 20% of students already struggle with problem-solving without AI assistance, indicating early signs of cognitive dependency. ## Science thinking at risk Thomas Nygren from Uppsala University warns AI threatens scientific reasoning development. Key endangered skills include hypothesis formulation, evidence interpretation, and tolerating uncertainty - the core processes where scientific thinking emerges. This poses unique challenges for STEM education where critical evaluation is fundamental. ## Math performance decline A 2024 study revealed concerning patterns in mathematics education. Students performed better with ChatGPT access but showed significant performance drops when the tool was removed. The control group without AI exposure maintained more consistent problem-solving abilities, suggesting AI reliance creates fragile competencies. ## OECD's decade-long focus The OECD conducted a 10-year critical thinking program led by Stéphan Vincent-Lancrin. While critical thinking is now part of most OECD country curricula, implementation remains inconsistent. Example courses like diabetes causation analysis demonstrate effective approaches by integrating multiple perspectives and iterative reasoning. ## Domain-specific challenges Educational psychologist Paul Kirschner emphasizes critical thinking isn't transferable across fields. A neurologist excels in neurological diagnosis but struggles with cardiology cases. This specificity requires subject-matter knowledge integration, making generic critical thinking courses ineffective without domain context. ## Curriculum design insights Effective instruction requires embedding reasoning skills within subjects through varied practice. Willingham recommends identifying key reasoning patterns, integrating them across problems, and ensuring repeated application. Kirschner adds the need for coherent knowledge-building across years to develop layered thinking capabilities. ## Assessment hurdles The OECD partners with Macat to create standardized critical thinking assessments. Unlike math or reading, these skills resist easy measurement. Current evaluation challenges include capturing domain-specific reasoning and longitudinal development, complicating evidence-based pedagogical improvements. ## Cognitive effort paradox Daniel Willingham notes learning requires cognitive effort that AI eliminates. While some AI tools can support learning through feedback mechanisms, users typically prefer quick answers over effortful engagement. Yan observed students abandoning thinking-prompts for ChatGPT's direct solutions despite pedagogical intentions. ## Future research directions The Education Endowment Foundation is investing £2.5 million in rigorous AI impact studies. Research will examine learning, memory, and problem-solving outcomes. While comprehensive data remains scarce, early indicators suggest both risks and opportunities requiring careful instructional design to preserve essential thinking skills. ## Sources covering this story - https://www.nature.com/articles/d41586-026-02930-6 — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._