Interesting findings. This makes me wonder how adolescent "unstructured leisure time" has changed historically since the internet/computers entered the scene. These days, without structure, adolescents seem drawn to tech use because of how easily accessible it is, and how rewarding it can feel in the moment.
I wonder whether there's something to the idea of promoting "unstructured non-tech use time". I know how thinly stretched parents can feel, and how parents can feel the urge to drive kids/teens to all these structured activities. It makes me wonder how helpful it is for parents to make sure teens are always have enough structured "activities" to engage in. I suppose I'm wondering what amount of structure is needed - whether it needs to be specific activities like soccer leagues or chess club, or if it could be more informal. I suppose another research article could examine this!