Testing assumptions in the field can avoid costly errors in decision-making.
Hydroxychloroquine provides a case study.
Cultural and political divisions have persisted for decades. Now there’s a growing gap in how Americans see each other.
Perceptions of the future may depend on the format of forecasts as much as on the forecasts themselves.
People who consider their political party more central to their identity tend to vote along party lines more than those who see it as more peripheral.