Is ChatGPT Affecting Your Brain?

Is ChatGPT affecting your brain?

I just read a fascinating study out of MIT, where they hooked up students to EEG monitors and had them write essays with either (1) no tools, (2) a search engine, or (3) ChatGPT.

The headline? When we rely on AI tools like ChatGPT to write essays, we think less, remember less, and care less.

Researchers measured brain activity using EEGs and found that students who wrote essays with ChatGPT help had 55% lower neural connectivity compared to the group that wrote using only their brain.

Additionally:

• 83% of ChatGPT users couldn't quote from their own essays just minutes after writing them. In the other groups, only 11% struggled.
• Their essays had less originality, more generic language, and more third person language.
• Majority of the ChatGPT users felt a diminished sense of ownership / cognitive agency over the essay.
• The ChatGPT group was 60% more productive overall, but this did not "universally equate to enhanced learning outcomes."

What's even more interesting is that the researchers had participants switch tools for one of the sessions to assess cognitive adaptation, and found that:

• LLM-to-Brain Group (previously ChatGPT users, now Brain-only): Showed "weaker neural connectivity and under-engagement of alpha and beta networks" compared to the sustained high connectivity of the Brain-only group in previous sessions.
• Brain-to-LLM Group (previously Brain-only users, now ChatGPT users): Demonstrated "higher neural connectivity than the ChatGPT group in previous sessions", used ChatGPT more strategically, and demonstrated higher memory recall.

This study is important in highlighting the implications of cognitive offloading to LLM programs, especially in the context of education and knowledge work. It's a reminder that we can't outsource our thinking to an LLM and hope that it'll produce a satisfactory result.

Use AI, but don't outsource your brain.

Curious if others are feeling this too. Has AI made you sharper, or a bit rustier?

Further reading:

• arxiv.org