Biden Says He Has Not Had a Cognitive Test and Doesn’t Need One

President Biden said in an interview on Friday that he has not undergone a cognitive exam, but argued that his record as president should be proof enough that he is mentally fit to lead the nation.

He was repeatedly pressed about his cognitive abilities in his first major interview since his disastrous debate performance set off calls for him to drop out of the race. George Stephanopoulos of ABC News asked him pointedly if he would be willing to undergo a neurological and cognitive test.

“I have a cognitive test every single day. Every day I have that test. Everything I do. You know, not only am I campaigning, but I’m running the world,” Mr. Biden told ABC’s George Stephanopoulos.

The line of questioning came after Mr. Biden was criticized for his debate performance that was often meandering and during which he was faltering in his speech. Several current and former officials have also expressed concern that moments in which Mr. Biden appears confused or listless have become more frequent.

The White House has said Mr. Biden was suffering from a cold on the night of the debate. Mr. Biden has blamed himself and his travel schedule ahead of the debate. But an increasing number of Democrats and voters have expressed concern over whether Mr. Biden has the mental acuity to not only beat Mr. Trump, but to serve for another four years.

“Have you had the specific cognitive tests, and have you had a neurologist, a specialist, do an examination?” Mr. Stephanopoulos asked Mr. Biden.

“No. No one said I had to,” Mr. Biden said. “They said I’m good.”

Mr. Biden added that like every president, a White House doctor does travel with him. His doctor, Dr. Kevin O’Connor, said Mr. Biden was “fit for duty” after undergoing a physical earlier this year, adding that he had undergone an “extremely detailed” neurological exam that did not turn up evidence of stroke, neurological disorders or Parkinson’s disease.

After the debate, Mr. Biden said his doctor looked at him and said, “you’re exhausted.”

Mr. Biden also did not commit to taking a cognitive test in the future to assure voters. Instead, he issued a challenge to those concerned about his mental state. “Watch me.”

“There’s a lot of time left in this campaign,” Mr. Biden said.