Eric Kaufmann has pointed out that the biblical verse to "go forth and multiply" and similar passages of Scripture has contributed to a higher fertility rate for conservative Christians and Orthodox Jews.<ref>[http://blogs.vancouversun.com/2014/10/12/think-religion-is-declining-look-at-who-is-going-forth-and-multiplying/ Think religion is in decline? Look at who is ‘going forth and multiplying’], ''Vancouver Sun''</ref><ref>[http://www.sneps.net/RD/uploads/1-Kaufmann&Skirbekk-draft1.pdf ‘Go Forth and Multiply’: the Politics of Religious Demography] by Eric Kaufmann</ref><ref>[https://www.youtube.com/watch?v=H7vCDeKPRSo Eric Kaufmann - Religion, Demography and Politics in the 21st Century']</ref>
== Atheists and dopamine levels in the brain ==
According to ''Scientific American'': "Research also suggests that a religious brain exhibits higher levels of dopamine, a hormone associated with increased attention and motivation."
== Atheism and intelligence ==