More work is needed to explain the findings, but the researchers suspect a two-way relationship underpins the results. In this scenario, people with better thinking skills are more likely to use digital devices, but there are also cognitive benefits to be had from embracing the technology.
They said drinking coffee improves your bloodstream, so I drank 50 and got hospitalized. Lies and propaganda all the way!
There is no way that one thing can have positive and negative effects depending on context, good and bad are the only two categories to choose from.