Even though the recession has been over since mid 2009, American's are struggling with the lowest standard of living they have experienced in over 50 years.

Bottom line: The average individual now has $1,315 less in disposable income than he or she did three years ago at the onset of the Great Recession – even though the recession ended, technically speaking, in mid-2009. That means less money to spend at the spa or the movies, less for vacations, new carpeting for the house, or dinner at a restaurant.

So we know the effects - but what are the causes?

One factor is stagnant incomes: Real median income is down 9.8 percent since the start of the recession through this June, according to Sentier Research in Annapolis, Md., citing census bureau data. Another is falling net worth – think about the value of your home and, if you have one, your retirement portfolio. A third is rising consumer prices, with inflation eroding people's buying power by 3.25 percent since mid-2008.

"In a dynamic economy, one would expect Americans' disposable income to be growing, but it has flattened out at a low level," says economist Bob Brusca of Fact & Opinion Economics in New York.

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