The Spirit Level: Why More Equal Societies Almost Always Do Better is a book by Richard G. Wilkinson and Kate Pickett, published in 2009 by Allen Lane. The book is published in the US by Bloomsbury Press (December, 2009) with the new sub-title: Why Greater Equality Makes Societies Stronger. It was then published in a paperback second edition (United Kingdom) in November 2010 by Penguin Books with the subtitle, Why Equality is Better for Everyone.
The book argues that there are "pernicious effects that inequality has on societies: eroding trust, increasing anxiety and illness, (and) encouraging excessive consumption". It claims that for each of eleven different health and social problems: physical health, mental health, drug abuse, education, imprisonment, obesity, social mobility, trust and community life, violence, teenage pregnancies, and child well-being, outcomes are significantly worse in more unequal countries, whether rich or poor.
The book contains diagrams (scatter plots) that are available online.
In 2010, the authors published responses to questions about their analysis on the Equality...
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