The Satisfaction with Life Index introduced in analytic psychology, using data from a metastudy. It is an attempt to show life satisfaction in different nations.
In this calculation, subjective well being correlates most strongly with health (.7), wealth (.6), and access to basic education (.6).
This is an example of directly measuring happiness – asking people how happy they are – as an alternative to traditional measures of policy success such as GDP or GNP. Some studies suggest that happiness can be measured effectively.