The data show government transfers and rebates have not increased consumption at all.

Is the American Recovery and Reinvestment Act of 2009 working? At the time of the act’s passage last February, this question was hotly debated. Administration economists cited Keynesian models that predicted that the $787 billion stimulus package would increase GDP by enough to create 3.6 million jobs. Our own research showed that more modern macroeconomic models predicted only one-sixth of that GDP impact. Estimates by economist Robert Barro of Harvard predicted the impact would not be significantly different from zero.

Now, six months after the act’s passage, we no longer have to rely solely on the predictions of models. We can look and see what actually happened.

Consider first the part of the package that consists of government transfers and rebates. These include one-time payments of $250 to eligible individuals receiving Social Security, Supplemental Security Income, veterans benefits or railroad retirement benefits–and temporary reductions in income-tax withholding for a refundable tax credit of up to $400 for individuals and $800 for families with incomes below certain thresholds. These payments, which began in March of this year, were intended to increase consumption that would help jump-start the economy. Now that a good fraction of these actions have taken place, we can assess their impact.

Read the Wall Street Journal article here.

Incoming data will reveal more in coming months, but the data available so far tell us that the government transfers and rebates have not stimulated consumption at all, and that the resilience of the private sector following the fall 2008 panic–not the fiscal stimulus program–deserves the lion’s share of the credit for the impressive growth improvement from the first to the second quarter. As the economic recovery takes hold, it is important to continue assessing the role played by the stimulus package and other factors. These assessments can be a valuable guide to future policy makers in designing effective policy responses to economic downturns.