The lady interviewed said 'screens' and mentions working with tables.

The researchers whose work she cited may be different, but from a quick perusal they appeared to take into account the effect of different media in the design of their experiments and interpretation of their conclusions. I only came across this recently and found their results interesting because they seemed counter-intuitive. To quote them

If indeed display-related factors are the source for the reluc- tance to study on screen, one might expect this preference to attenuate with recent technological advances. Yet, readers who use the most up-to-date technologies still cite a large variety of technology-related factors as alienating them from learning on screen

and

However, evidence is beginning to accumulate that something other than technology-related factors is at work here. This evidence suggests that people activate less effective reading habits on screen than on paper

and they cite numerous sources which may have use 'the most up to date technologies' (ipads? tablets? ereaders? I don't know), but I believe in their particular experiment used computer screens. I suspect they would consider the difference between say a computer screen and tablet or ebook a matter of degree and expect an attentuation of effect (the latter wouldn't be as great as the former). From what I can tell they seem to have taken such considerations into account, but I haven't read this paper fully and critically, nor any of their citations so you would be better to read it and draw your own conclusions. You would be best served to focus your attention there if you wish better answers.