Reacción a "A study links early use of social media with lower scores in standardised tests"

The press release is clear about the study and its limitations.

It is the first longitudinal, quasi-experimental study to address the relationship between social media use and learning outcomes on a global scale. I believe that is the major contribution of this paper. The conclusions are well-supported and, whilst further studies are needed, the evidence is consistent in showing that the earlier a social media account is opened, the greater the effect. That said, it is a pity that they have not reported results by gender or socio-economic status.

This is the first contribution of its kind to this body of literature; clearly more is needed, but it is a major finding that provides further evidence on a fundamental question, one of which public authorities should be more aware.
All the factors that could be taken into account have been considered. It is possible that they could carry out some additional robustness tests, but I think that, generally speaking, it is sound.

It is a solid finding that points to the need to delay the age at which teenagers start using social media to, at the earliest, 15 or 16 years of age.