This is just a press release and I haven't read the full paper, but from this top-level summary it seems like it could also be construed as "toddlers who have a

This is just a press release and I haven't read the full paper, but from this top-level summary it seems like it could also be construed as "toddlers who have a higher exposure to touchscreens are better at using touchscreens later on." This feels like it could just be a function of practice, or perhaps familiarity with computers (not sure whether they controlled for computer use - did the "non-touchscreen" kids use computing devices in general as much as the "touchscreen" kids?), not attention necessarily.