The happiest countries in the world have the highest levels of trust. The U.S. ranks #23
Quartz reports: A single survey question produces the ranking most often cited as a measure of national well-being. Gallup World Poll interviewers ask people in more than 140 countries to picture a ladder numbered zero to 10. The top rung represents the best possible life for them, the bottom rung the worst. Respondents say which rung they stand on today. That question, known as the Cantril ladder, generates the scores behind the World Happiness Report. The happiest countries in the…