If you start searching, you will find the data. There is a decent body of work on the attention span issues and cognitive abilities. The most of it in the conte

If you start searching, you will find the data. There is a decent body of work on the attention span issues and cognitive abilities. The most of it in the context of "social media" revolution. It's not my area of expertise, though. My personal experience at Cambridge and Groningen University was always very good with students. Yet, these are peculiar places.