Tapia Granados, José A. “ Statistical Evidence of Falling Profits as Cause of Recession A Short Note”, Review of Radical Political Economics December 2012 vol. 44 no. 4 484-493.
Data on 251 quarters of the U.S. economy show that recessions are preceded by declines in profits. Profits stop growing and start falling four or five quarters before a recession. They strongly recover immediately after the recession. Since investment is to a large extent determined by profitability and investment is a major component of demand, the fall in profits leading to a fall in investment, in turn leading to a fall in demand, seems to be a basic mechanism in the causation of recessions.