Cognitive Decline? Experts Find Evidence Trump’s Mind Is Slowing

These changes in Trump’s speech could be due to something as benign as mood changes or as serious as the beginnings of Alzheimer’s disease, the experts said. One academic, social psychologist James Pennebaker, performed a statistical analysis of transcripts from Trump speeches between 2015 and 2024, and found telling differences in how the former president and convicted felon speaks.  

Pennebaker, a professor at the University of Texas at Austin, found that Trump has increased his “all-or-nothing thinking,” using words such as “always,” “never,” and “completely.” This, along with his decrease in the use of positive words and increased references to negative emotions, could be a sign of depression, Pennebaker said.

A sharp increase in all-or-nothing thinking is linked to cognitive decline, Pennebaker added. “Another person [whose] all-or–nothing thinking has gone up is Biden,” he said.