What do events and policies actually do to our wellbeing?
Cities judge stadiums, festivals, and policy changes by dollars. WellbeingEffect is an open methodology and tool for measuring what they do to how people feel — using public search data, synthetic-control "digital twins," and placebo-tested causal inference. Low-cost, replicable, anyone can check the work.
Public signals
Weekly Google search interest in validated wellbeing terms — the GNH.today approach of Greyling & Rossouw — tracked across every US media market.
Digital twins
Each affected city gets a synthetic control: a weighted blend of unaffected metros that has matched it for years. When they split, that's the effect.
Honest inference
Difference-in-differences with autocorrelation-robust intervals — and placebo tests that try hard to make the method fool itself before you trust it.
