Korean children and teenagers appear to be the least happy among the nations of the Organization for Economic Co-operation and Development. This comes from a survey of 5,000 Korean students carried out by a research institute at Yonsei University that was then compared with a study conducted by UNICEF in 2006.

The subjective happiness rate of Korean children and teenagers was 72 points, more than 40 points below Greece, the highest ranking country among the 20 OECD members.