One theory, reported in the article, is that children in our city tend to spend less time in structured activities such as clubs and groups, than children elsewhere. It's suggested that this freedom from over-organised social lives leaves more time to be with friends.
It's a good news story worth celebrating, and while the central lesson that friendship leads to happiness shouldn't surprise anyone, it helps us think about the way we work with children in the groups that we provide at church.
Simply providing structured activities isn't enough. Church is essentially relational - about the way that people relate with each other and with God. We're less interested in people "attending our activities" than in deepening friendships and growing as disciples.