Harder for Americans to Rise From Lower Rungs

But many researchers have reached a conclusion that turns conventional wisdom on its head: Americans enjoy less economic mobility than their peers in Canada and much of Western Europe. The mobility gap has been widely discussed in academic circles, but a sour season of mass unemployment and street protests has moved the discussion toward center stage.

Former Senator Rick Santorum of Pennsylvania, a Republican candidate for president, warned this fall that movement “up into the middle income is actually greater, the mobility in Europe, than it is in America.” National Review, a conservative thought leader, wrote that “most Western European and English-speaking nations have higher rates of mobility.” Even Representative Paul D. Ryan, a Wisconsin Republican who argues that overall mobility remains high, recently wrote that “mobility from the very bottom up” is “where the United States lags behind.”

Liberal commentators have long emphasized class, but the attention on the right is largely new.

“It’s becoming conventional wisdom that the U.S. does not have as much mobility as most other advanced countries,” said Isabel V. Sawhill, an economist at the Brookings Institution. “I don’t think you’ll find too many people who will argue with that.”

One reason for the mobility gap may be the depth of American poverty, which leaves poor children starting especially far behind. Another may be the unusually large premiums that American employers pay for college degrees. Since children generally follow their parents’ educational trajectory, that premium increases the importance of family background and stymies people with less schooling.

At least five large studies in recent years have found the United States to be less mobile than comparable nations. A project led by Markus Jantti, an economist at a Swedish university, found that 42 percent of American men raised in the bottom fifth of incomes stay there as adults. That shows a level of persistent disadvantage much higher than in Denmark (25 percent) and Britain (30 percent) — a country famous for its class constraints.

Meanwhile, just 8 percent of American men at the bottom rose to the top fifth. That compares with 12 percent of the British and 14 percent of the Danes.

Despite frequent references to the United States as a classless society, about 62 percent of Americans (male and female) raised in the top fifth of incomes stay in the top two-fifths, according to research by the Economic Mobility Project of the Pew Charitable Trusts. Similarly, 65 percent born in the bottom fifth stay in the bottom two-fifths.

By emphasizing the influence of family background, the studies not only challenge American identity but speak to the debate about inequality. While liberals often complain that the United States has unusually large income gaps, many conservatives have argued that the system is fair because mobility is especially high, too: everyone can climb the ladder. Now the evidence suggests that America is not only less equal, but also less mobile.

John Bridgeland, a former aide to President George W. Bush who helped start Opportunity Nation, an effort to seek policy solutions, said he was “shocked” by the international comparisons. “Republicans will not feel compelled to talk about income inequality,” Mr. Bridgeland said. “But they will feel a need to talk about a lack of mobility — a lack of access to the American Dream.”

While Europe differs from the United States in culture and demographics, a more telling comparison may be with Canada, a neighbor with significant ethnic diversity. Miles Corak, an economist at the University of Ottawa, found that just 16 percent of Canadian men raised in the bottom tenth of incomes stayed there as adults, compared with 22 percent of Americans. Similarly, 26 percent of American men raised at the top tenth stayed there, but just 18 percent of Canadians.

“Family background plays more of a role in the U.S. than in most comparable countries,” Professor Corak said in an interview.

Skeptics caution that the studies measure “relative mobility” — how likely children are to move from their parents’ place in the income distribution. That is different from asking whether they have more money. Most Americans have higher incomes than their parents because the country has grown richer.

Some conservatives say this measure, called absolute mobility, is a better gauge of opportunity. A Pew study found that 81 percent of Americans have higher incomes than their parents (after accounting for family size). There is no comparable data on other countries.

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