Atheist nations are more peaceful
The 2009 Global Peace Index has just been released. It's basically a ranking of how turbulent and warlike a country is.
They put it together by assessing 23 criteria, including foreign wars, internal conflicts, respect for human rights, the number of murders, the number of people in jail, the arms trade, and degrees of democracy (Guardian).
You can see a world map of peace at the Vision of Humanity website
http://www.visionofhumanity.org/gpi/home.php and also take a look at country rankings for 2009, as well as earlier years.
New Zealand came top this year. Hmm, New Zealand is a pretty secular country. In fact, if you eyeball the rankings, the top few countries are all pretty secular.
What I've done in the figures here is to take data from the World Values Survey
http://www.worldvaluessurvey.org/ on the percentage of people in each country who say they are a committed atheist, and also on the percentage of people who say that they go to a religious service at least once a month.
Then I split the sample into two equal groups, based on their score on the Global Peace Index. The ones in the 'Peaceful' group are countries with a GPI score less than 1.8.
Sure enough, peaceful countries have more atheists and fewer regular worshippers. The difference is highly statistically significant - in other words it's real, not just a chance finding.
Now, there are several possible reasons for this. It could be that people living in turbulent countries turn to religion, or it could be that religion is not a good way to structure modern society.
Whatever, it's another blow to the idea that secularization leads to social meltdown. Atheist countries are, in fact more peaceful.
