"The continuing increases in employment, together with some pick-up in real wages, have helped sustain consumer spending, which increased at a brisk pace in the second half of last year, and has continued to be well maintained so far this year," he said.

"Growth in consumer spending should continue to support the economic expansion in coming quarters," he continued.

But Bernanke was quick to add that all is not well. In particular, he pointed to a dramatic slowdown in America's once-booming housing market, regarded as a primary engine of U.S. economic growth in recent years.

"To the downside, the correction in the housing market could turn out to be more severe than we currently expect, perhaps exacerbated by problems in the sub-prime sector," the Federal Reserve chairman said.

"Moreover, we could see yet greater spillover from the weakness in housing to employment and consumer spending than has occurred thus far," he added.

The "sub-prime sector" refers to mortgages held by roughly 10 percent of U.S. homeowners that often feature higher interest rates and sometimes allow a homeowner to pay only the interest on their loan, thereby accruing no equity. Such plans are generally offered to people with poor credit or low income levels.

Foreclosuresin the sub-prime sector have skyrocketed in recent months, leading U.S. officials and legislators to question the lending practices of some financial institutions.

The Federal Reserve Board decides when and whether to raise or lower interest rates, based on its reading of current economic conditions and its projections of future ones. Many look to the Federal Reserve chairman as America's top economicprognosticator.

Earlier this month, Bernanke's predecessor, Alan Greenspan, said there is a one in three chance that the United States will slide into a recession by year's end.

Speaking on Capitol Hill, Bernanke said there is insufficient evidence to conclude that America's five-year economic expansion will "die of old age."