Question

A large generational divide involves the use of technology. people over 65 are less likely to use technology than younger individuals. some of this difference may be explained by a reduction in fluid intelligence that occurs as we age. what kind of barrier would describe this limitation?

Answer 1

This limitation describes a cognitive kind of barrier.  Cognitive limitations are limitations  in the human cognitive capacity. They are related to the mental processes of perception, memory, judgment, and reasoning. 
People over 65 are less likely to use technology because of the reduction in fluid intelligence that occurs as we age, which is a cognitive limitation.