Concern over President Biden’s fitness for a second term has left some voters and politicians pushing him to undergo a cognitive test. Yet one test wouldn’t provide a final word on the president’s cognitive abilities, doctors said.

       Doctors use cognitive tests as a screening tool to help inform their understanding of a patient’s cognitive function. The tests are designed to assess a person’s memory, attention, executive function, language and judgment. The assessments neither provide a diagnosis nor determine with certainty whether a patient has mild cognitive impairment, doctors said. Low scores indicating signs of possible dementia could provide more of a clear signal, though not a certain diagnosis.

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