Footage from Arizona shows Donald Trump defending his mental acuity, citing past cognitive evaluations to dismiss media ...

This isn’t a real cognitive test, but it should give you an understanding of how simple screenings work. Donald Trump, who is just three years younger than Biden, has yet to offer details on ...

Learn how Alzheimer's disease is diagnosed through history, testing, imaging, and emerging blood biomarkers to support early ...

Doubts about the mental fitness of President Biden and Donald Trump to hold the White House in their 80s have highlighted tests that could reveal whether an older adult is experiencing cognitive ...

Since President Joe Biden's poor debate performance last month, some Democratic lawmakers and political commentators are calling on him to take a cognitive test to illustrate his mental capacity.