Daniel Nettle is the author of several books, most notably, ''Happiness: The Science Behind Your Smile'' (2005), ''Personality: What Makes You the Way You Are'' (2007), ''Tyneside Neighbourhoods: Deprivation, Social Life and Social Behaviour in One English City'' (2015), and ''Hanging on to the Edges: Essays on Science, Society and the Academic Life''. The last two are free open-access e-books. He was President of European Human Behaviour and Evolution Association (EHBEA) from 2013 to 2016.