It's not even linkbait because it's overly connected to cell phones. It's linkbait b/c it's not as certain as the title says. TFA says, emphasis mine: featur

It's not even linkbait because it's overly connected to cell phones. It's linkbait b/c it's not as certain as the title says. TFA says, emphasis mine: features like pitch, loudness, and tempo that may predict a mood swing in the near future, before any recognizable change in mood emerges. For example, a single feature, like loudness, may flag a person on the path to mania or depression once it crosses some threshold. Or telltale signs could come from a combination of these features, or the way they change over a few days. The project was funded in 2013 by the National Institute of Mental Health, so it’s still in its early days. Though they don’t yet know what will make the best predictors,