Coauthor Mattias Ohman, PhD, said that making vaccination appointments for people accelerated uptake in both groups. "Logging on to a website, finding an appoin

Coauthor Mattias Ohman, PhD, said that making vaccination appointments for people accelerated uptake in both groups. "Logging on to a website, finding an appointment, booking it, going there and getting vaccinated may have been too many steps for some people," he said. I will also note that people with poorer cognitive ability may face other barriers as well, such as logistical issues. They may have less money -- which can be a practical barrier even if the shot is free -- may have transportation issues, etc. I was one of the top 3 students of my graduating high school class, had the highest SAT score and won a National Merit Scholarship to a prestigious school. I'm also seriously medically handicapped and it frequently impairs my cognitive ability. So I'm both "a smart person" and also cognitively impaired.