This bit from the "Strengths and Limitations" section gave me an inappropriate chuckle: > ... The use of a single question to measure happiness is easier for p

This bit from the "Strengths and Limitations" section gave me an inappropriate chuckle: > ... The use of a single question to measure happiness is easier for people with lower IQ to understand ... In seriousness, though, this paper is interesting, as it goes against conventional wisdom.