What is the reason for the rising number of multi-generational households in the U.S?

A new study finds the number of Americans living in multi-generational households has grown by nearly five million during the recent recession. It’s the largest such increase in modern history.
    The Pew Research Center finds doubling up with relatives is a financial lifeline for many. A quarter of young unemployed have done so. The move that reports suggest has kept many from falling into poverty. Young adults also fuel the trend. In 2009, a fifth of those aged 25 to 34 lived in a multi-generational household. Asians, blacks and Hispanics are all far more likely than whites to live with other generations. (10) The Pew study finds the sharpest spike has been among Hispanics, a group hit especially hard by the downturn.
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