After Biden debate performance, experts reflect on difference between 'normal aging' and something more

In the days after Thursday’s presidential debate, one of the questions that was asked on the stage seems to be lingering in the public debate: How would the candidates address concerns about their capability to handle the job in their 80s?

Both candidates — Joe Biden, now 81, and Donald Trump, 78 — would set a record for the oldest president in office, and both have faced speculation about their cognitive abilities. On the debate stage, Biden and Trump both displayed behaviors that raised red flags from their audience: The current president had slurred speech, some garbled answers, a pause that resolved in a non sequitur; his opponent offered answers that often bypassed logical reasoning, and lied about easily verifiable facts.

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