Reacción a "A global review reveals links between screen use and various child health outcomes"

In the field of education and technology use – which is my area of expertise – I have been able to analyse the results in detail. Thus, when there is talk of a negative correlation [between screen use] and academic performance, this should be interpreted with considerable caution. The findings are highly varied, making it difficult to establish a causal link. Furthermore, in terms of educational research, this study suffers from the same shortcoming as other primary studies: the purpose of use, the content or the level of interaction with screens are aspects that are not usually taken into account (the study makes a slight distinction between types of screens, but not what is actually done with them). Other studies that have taken these factors into account have found that no such link exists. It is therefore important to draw a clear distinction between correlation and causation.

By this I mean to emphasise that whilst these findings are significant, they must be treated with caution (as the authors themselves note in their discussion of limitations) and that further analysis of contextual factors not previously considered is required.