Study Warns AI Shortcuts Can Erode Deep Learning of Hard Skills

Researchers describe 'cognitive debt' as the cost of using AI tools to bypass the effortful learning needed to build real skills. A four-month EEG study by Kosmyna (2025) reported that people who leaned on a language model to write essays showed weaker neural connectivity in memory and attention networks and struggled to recall their own text. Experts argue that generating an output differs from acquiring a capability, since languages and technical disciplines shape how people think and reason. Psychological research on 'desirable difficulties' and active retrieval suggests that removing productive struggle hurts long-term retention. The authors conclude that attempting a task first and then using AI for critique, rather than delegating the work outright, helps preserve learning.