I prefer paper: the touch, smell, texture, size of print, shade of color of paper, etc I feel that all of these add to the sensory experience which adds to my object recognition or as I prefer to consider it: my visualization and thus memory of what I am reading. (And of course imagery used by the writer I am reading is enormously helpful). However, you make the statement that "your brain" may still prefer paper. Respectfully, and as a participant, I contend lumping all of your participants into a "you" may not be a legitimate proposal yet. Whether an individual processes information more through his/her left brain or right brain makes a huge difference. Left brainers being more field independent (not relying on visual imagery or reproducing it in their mind), may gravitate to the computer screen, and right brainer, being more field dependent (relying on images, creating or re-imaging pictures in their head, preferring paper. Thus I think your use of the word "you" is actually putting at least two different thought styles together (perhaps more) Which brings me to a question I wondered if the Lumosity researchers have considered testing their test participants, or at least having them fill out a questionnaire to find which side of the left/right continuum they may fall upon? Further, I might wonder if the population of your test participants is more populated by one style of thinker over another?
You also mentioned the fact that digital devices and their associated properties of movement, scrolling, can interfere with cognitive resources. I wonder that this wouldn't actually assist some types of learners. There is that population of Right brainers that are more kinesthetically inclined in their learning process. That group could be excelling. It would be very interesting if more of these various learning styles/thought styles could be differentiated. Just a thought on a very thought provoking subject. Thank you for bringing
it up !