This article (recycled today?) put a flawed research finding in the popular domain.
It noted dissent from Easterlin & Ryff but countered w/ a nonsensical dismissal.
The "u-shape" is no longer a consensus view, not least because it is far from a universal pattern:
link.springer.com/article/10.1...
link.springer.com
To Evaluate the Age–Happiness Relationship, Look Beyond Statistical Significance - Journal of Happiness Studies
The persistent contentiousness of research on the age–happiness relationship is puzzling; it should be possible to gain clarity and consensus about how to address the question effectively. In this pap...