We study business cycles with cyclical returns to scale. Contrary to tightly parameterized production functions (Cobb-Douglas and Constant Elasticity of Substitution), we empirically identify strong input complementarity that leads to procyclical returns to scale. We therefore propose a flexible...

This paper explores the importance of investment-specific technology changes in anticipated TFP fluctuations. To this end, we identify two types of news shocks with the maximum forecast error variance approach: news shocks to TFP and news shocks to the relative price of investment. We show in a...