I'm not arguing against the idea of mixed economies, but I don't find the argument that a bunch of countries produce happy citizens and the same countries have mixed economies very compelling. For instance, you don't mention the inverse. How do mixed economies due on the unhappiness scale? Is there some bare standard of mixed economy (for instance the US does have a mixed economy with a social support system at many levels)? Is there something else that is more related than their economic model for happiness?
I personally look at that data set and find it telling that those are all small countries by population size, wealthy and have lots of mineral resources per capita. For instance, are people in Iceland more happy than people in Corpus Cristi, Tx (which gets routinely rated as a happy US city and is bigger than Iceland).
You are right, my conclusion was linking happiness with mixed economies, that was not from the report--the link is intuitively obvious to me, but likely hard to prove.
I've seen a study in the past showing the relationship between happiness and financial income. It showed that happiness largely peaked when you had enough money to support your basic needs and do a few extra fun things. Any additional income didn't do much to help people feel happier.
So, my conclusion based on that was that a mixed economy where everyone's basic needs are largely met seems like a good way to keep it's population basically happy. The study seemed to validate that somewhat.
In contrast in the US where the growing bottom percent of the population faces stress over basic needs, and many in the middle class are one health care diagnosis away from bankruptcy seemed like a good indicator that the current American economic system is not ideal, and has a clear direction that it could take to solve these issues.
I personally look at that data set and find it telling that those are all small countries by population size, wealthy and have lots of mineral resources per capita. For instance, are people in Iceland more happy than people in Corpus Cristi, Tx (which gets routinely rated as a happy US city and is bigger than Iceland).