Recent research indicates that the greater distractibility of older adults is associated with less effective functioning in neural networks running through the frontal and parietal lobes of the brain, which are involved in cognitive control true or false

That statement is true.

frontal and parietal lobes are the part of the brain that we use when we want to focus and analyze something whether it's a new object or new pieces of information. Deterioration in this part of the brain would make us unable to focus for a long period of time and easily distracted

That is true , instead try to have a sit down talk with them