BETA RELEASE

Your Brain on ChatGPT: Accumulation of Cognitive Debt when Using an AI Assistant for Essay Writing Task

Secondary report MIT Media Lab
Published: 2025-06-10 Accessed: 2026-05-10
Original source ↗ Archived copy ↗

Summary

Study using EEG and NLP to analyze cognitive and behavioral effects of LLM-assisted essay writing compared to search engines and no-tool conditions.

Key quotes

Cognitive activity scaled down in relation to external tool use.
Over four months, LLM users consistently underperformed at neural, linguistic, and behavioral levels.

The research utilizes electroencephalography (EEG) to measure brain connectivity and NLP to analyze essay quality. It examines the concept of ‘cognitive debt’ resulting from reliance on AI assistants during educational tasks.