WASHINGTON — A study by the Pew Research Center found that young adults worldwide are generally less religious than older adults by a variety of measures.
The study, which drew upon previous surveys by Pew, concluded that this was true regardless of the predominant religion in the country, its level of economic development, or its level of religiosity. It defined young people as those under 40 years of age and older people as those 40 or older.
The study noted projections indicate countries whose populations are growing fastest are very religious, while countries projected to have shrinking or stagnant population levels tend to be less religious.
In addition to determining the differences between the rates of religious observance of younger and older people, the study, published in mid-June, attempted to identify possible causes for those differences.
As life expectancy, the average amount of schooling, income equality, and gross domestic product increase, the study found that religious observance decreases, with very few exceptions.
For example, of the 102 countries included in the report, the United States was the only one with an above-average GDP per capita and an above-average rate of daily prayer.
“Religious commitment is lower in places where life is easier. And in places where life is steadily becoming easier, the theory goes, younger adults generally are less religious than their parents’ and grandparents’ generations,” the report says.
The correlation between religious commitment and the ease of life also seems to run in the other direction. In many of the countries in which young adults are more religious than older adults — such as Ghana, Liberia, Chad and Georgia — civil wars, violence, or other forms of unrest occurred while young people were coming of age.
In 41 of the 106 countries surveyed, young people were less likely to have a religious affiliation than older people. Most of these countries were in the Americas or Europe, but South Korea, Australia and Japan had some of the world’s largest gaps between the percentages of young and older people who are religiously affiliated. The majority of age gaps in affiliation are in countries that have generally Christian populations.
The study also found that in North America and much of Latin America and Europe, young adults were less likely than older adults to say that religion was very important in their lives. About half the countries in the Middle East, where almost all adults have a religious affiliation, had a similar gap.
Young adults are also less likely than older adults to attend weekly religious services. The study found that this was almost universally true in the Americas and in over half of the surveyed countries in Europe, the Middle East and North Africa.
The study found that “the generational divide in religious commitment is most apparent when examining daily prayer. Not only is it the measure with the highest number of countries with an age gap, but it is also the measure by which the average country has the biggest gap globally.”
The gap exists in 71 of the 105 countries surveyed, including all 19 countries surveyed in Latin America, 27 of 35 European countries, the United States, Canada, and a number of countries in other regions.
The difference in rates of daily prayer was especially wide in the United States — 18 percentage points — and Latin America and the Caribbean — 14 percentage points — and the average difference was nine points. Both generally religious and nonreligious countries were among the 71 countries in which older people are more likely to pray daily than younger people.