The Effect of Federal Government Size on Long-Term Economic Growth in the United States, 1791-2009

We consider whether there is statistical evidence for a causal relationship between federal government expenditures and growth in real GDP in the United States, using available data going back to 1791. After studying the time-series properties of these variables for stationarity and cointegration, we investigate Granger causality in detail in the context of a Vector Error Correction Model. While we find causal evidence that faster GDP growth leads to faster growth in government spending, we find no evidence supporting the common assertion that a larger government sector leads to slower economic growth.