A recent MIT study suggests that using ChatGPT may weaken critical thinking skills. Researchers tested 54 participants by having them write SAT essays using ChatGPT, a search engine, or no assistance. Brain activity was monitored with EEG, revealing that ChatGPT users showed lower engagement and performed worse at neural, linguistic, and behavioral tasks. Over time, users relied more on copying and pasting, indicating a potential decline in independent thinking and cognitive effort when using AI tools.