Two in five Americans say they regularly attend religious services. Upward of 90 percent of all Americans believe in God, pollsters report, and more than 70 percent have absolutely no doubt that God exists.
There is only one conclusion to draw from these numbers: Americans are significantly more religious than the citizens of other industrialized nations.
Except they are not.
Beyond the polls, social scientists have conducted more rigorous analyses of religious behavior. Rather than ask people how often they attend church, the better studies measure what people actually do. The results are surprising. Americans are hardly more religious than people living in other industrialized countries. Yet they consistently — and more or less uniquely — want others to believe they are more religious than they really are.
Religion in America seems tied up with questions of identity in ways that are not the case in other industrialized countries. When you ask Americans about their religious beliefs, it's like asking them whether they are good people, or asking whether they are patriots. They'll say yes, even if they cheated on their taxes, bilked Medicare for unnecessary services, and evaded the draft. Asking people how often they attend church elicits answers about their identity — who people think they are or feel they ought to be, rather than what they actually believe and do.
If the data raise serious questions about self-reported church attendance, they ought to raise red flags about all aspects of self-reported religiosity. Self-reported church attendance has been held up as proof that America has somehow resisted the secularizing trends that have swept other industrialized nations. What if those numbers are spectacularly wrong?
"If Americans are going to church at the rate they report, the churches would be full on Sunday mornings and denominations would be growing," wrote C. Kirk Hadaway, now director of research at the Episcopal Church. (Hadaway's research has included evangelical congregations, which reported sharp growth in recent decades.)
Hadaway and his colleagues compared actual attendance counts with church members' reports about their attendance in 18 dioceses in rural Ohio. They found that actual "church attendance rates for Protestants and Catholics are approximately one half" of what people reported.
A few years later, another study estimated how often Americans attended church by asking them to minutely document how they spent their time on Sundays. Without revealing that they were interested in religious practices, researchers Stanley Presser and Linda Stinson asked questions along these lines: "I would like to ask you about the things you did yesterday from midnight Saturday to midnight last night. Let's start with midnight Saturday. What were you doing? What time did you finish? Where were you? What did you do next?"
This neutral interviewing method produced far fewer professions of church attendance. Compared to the "time use" technique, Presser and Stinson found that nearly 50 percent more people claimed they attended services when asked the type of question that pollsters ask: "Did you attend religious services in the last week?"
In a more recent study, Hadaway estimated that if the number of Americans who told Gallup pollsters that they attended church in the last week were accurate, about 118 million Americans would be at houses of worship each week. By calculating the number of congregations (including non-Christian congregations) and their average attendance, Hadaway estimated that in reality about 21 percent of Americans attended religious services weekly — exactly half the number who told pollsters they did.
Finally, in a new paper, Philip Brenner at the University of Michigan's Institute for Social Research compared self-reported attendance at religious services with "time use" interviews in the United States, Canada, the Netherlands, Germany, France, Norway, Finland, Slovenia, Italy, Spain, Austria, Ireland, and Britain. Brenner looked at nearly 500 studies over four decades, involving nearly a million respondents.
Brenner found that the United States and Canada were outliers — not in religious attendance, but in overreporting religious attendance. Americans attended services about as often as Italians and Slovenians and slightly more than Brits and Germans. The significant difference between the two North American countries and other industrialized nations was the enormous gap between poll responses and "time use" studies in those two countries.
Whatever the reason for the disparity, here's the bottom line: For many Americans, church attendance is a central part of their lives. For others, it's a waste of time. If you're in either of these groups, more power to you. But in the spirit of Christmas and the truth teller whose message we celebrate, surely believers and atheists can agree on what to tell folks who talk Jesus but walk Santa: Enough with the two-faced posturing.
Shankar Vedantam is the author of The Hidden Brain: How Our Unconscious Minds Elect Presidents, Control Markets, Wage Wars, and Save Our Lives.
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