What we publish
- Global, country and segment daily mood indices on a 0–100 scale.
- A 7-day rolling trend per published bucket.
- Documented suppression (k = 50) and 15-minute publication windows.
Design choices that matter for research
- Single-item instrument. One 5-point face per day. Maximizes participation, limits depth.
- Self-selected sample. Not a probability sample. Useful for time series, not cross-sectional point estimates.
- K-anonymity. Any bucket below 50 contributors is suppressed.
- Snapshot publication. Public values change only at 15-minute boundaries.
- Whitelisted segments. No arbitrary field probing; consent-gated sensitive attributes.
Suggested use
- Companion signal to slower instruments (Gallup, ESS, Eurobarometer).
- Event-study designs around shocks (elections, disasters, policy changes).
- Cross-country trend correlation, with country fixed effects.
Access & collaboration
For research access to aggregated time series, replication snapshots, or pre-publication review of methodology changes, use the contact form and pick the research topic. See full details on the methodology page.
Ethics
Participation is voluntary and anonymous. Optional accounts add a personal dashboard only. Sensitive attributes are opt-in and excluded from public aggregates. The full data controls are documented on the privacy page.