Though President Biden dismissed the suggestion, experts say having him take a cognitive exam has merit. Here's how the tests work, and what they might tell us.

What do cognitive tests do? Cognitive tests can assess mental awareness, reasoning and memory. Cognitive tests are not for gaffes, as Biden and Trump have been prone to make.

Thus, cognitive testing should be part of a broader assessment strategy, including regular performance reviews and holistic health evaluations.

Trump boasts about his vitality often and even said he "aced" two cognitive tests during the recent debate. The public, however, knows shockingly little about the former president's health.

Donald Trump not only received a clean bill of health during his physical exam, but the president claimed he also scored “the highest mark” on a cognitive test while bashing his predecessor ...

Biden aides joked about prez’s ‘hours’ with China’s Xi — suggested he take cognitive test: book Biden claimed that he had "spent more time with [Xi Jinping] than any world leader," met ...