ChatGPT can harm an individual's critical thinking over time, a new study suggests.

Researchers at MIT’s Media Lab asked subjects to write several SAT essays and separated subjects into three groups — using OpenAI’s ChatGPT, using Google’s search engine and using nothing, which they called the "brain‑only" group. Each subject's brain was monitored through electroencephalography (EEG), which measured the writer’s brain activity through multiple regions in the brain.

They discovered that subjects who used ChatGPT over a few months had the lowest brain engagement and "consistently underperformed at neural,........

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