Associated Press
In this Friday, April 13, 2012 photo, Lennar Homes sales manager Joy Broddle, left, looks over a floor plan for the multi-generational home that is under construction for Kelly, center, and Bill Noorish while standing in the living area of the next-gen suite of a two-story model of a similar home, in Las Vegas.

More than one out of five adults between the ages of 25 and 34 live with their parents or in some other type of a "multi-generational home." That's the most since the 1950s, according to the Pew Research Center.

Among that same demographic, 61 percent said they know someone who has moved back in with their parents because of the struggling economy, and almost eight in 10 said they don't have enough funding to live the way they want to, according to the Pew Research Center.

Adults moving in with their parents may be a drag on the economy. At least that's what some analysts believe. If Americans would have continued moving into homes at the same rate they did before the recession, 2 million more homes would be occupied, according to the Washington Post. Housing has been the key to most economic recoveries since 1960. If that trend is to continue, Americans need to start moving into new homes.

But as more and more people choose to live with their parents, fewer buy furnishings and appliances, according to the Washington Post. This creates another drag on the economic recovery.

"It is hard to see what's going to turn this around without better job and income growth," Daniel McCue, research manager at Harvard University's Joint Center for Housing Studies, told the Washington Post. "But the way the job market is going, I don't see any (immediate) change."

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