The speed and depth of information perception are very different depending on what source this information is read. In the experiment, researchers from Dartmouth College was attended by 120 people aged 20-24 years.
The volunteers were asked to read one and the same instrument. That's just the first group I read it with a notebook, and the second printed version of the pdf file.
Next, subjects were asked to answer questions on the text. In the group who read from the sheet of correct answers was 66%, reading from a laptop answer is correct only in 44% of cases.
The level of memorization of facts was better in the group who read from the screen. According to the study, these volunteers remembered 73% vs 58%.