Here are links to studies and articles detailing American “religious nones”.
- American Religious Identification Survey (2008)
- Friendly Atheist Post on 1-in-4-WA, with analysis from Hemant Mehta and John Keiser (2011)
- Berkeley report on Pew data, (2013)
- PEW/PBS Religion and Ethics Survey, (2012)
- USA Today Article comparing 2012 data to past years (2012)
- Atheism Research–Types of Nonbelievers, U of Tenn-Chattanooga (2013)