Philippon, Thomas - National Bureau of Economic Research - 2022
Growth theory is based on the assumption of exponential total factor productivity (TFP) growth. Across countries and … time periods I find that TFP growth is actually linear. Unlike the exponential model, the additive growth model provides … useful medium-term forecasts of TFP. It also explains the TFP slowdown and the volatility puzzle, and predicts falling real …