Money can’t buy you love, says the song, but can GDP buy
prosperity? The question is an important one given the emphasis that the White
House and Congress have placed on pushing GDP growth to its limits.
What do the data say? My favorite measure of overall
prosperity is the Social
Progress Index (SPI), which has just been updated for 2018. The SPI is a
comprehensive measure of human flourishing that draws on a broad set of
indicators of public health, education, safety, human rights and personal
freedoms. It purposely omits purely economic indicators such as GDP, inflation,
or income distribution, which makes it especially well-suited to address the
question of how GDP is related to noneconomic indicators of prosperity.
The following chart shows the relationship between the SPI
and GDP for the 146 countries in the SPI database. The horizontal axis measures
2018 GDP per capita using estimates from the July 2018 update of the IMF’s WEO database, expressed I 2011 constant dollars at
purchasing power parity.








