Replacement rate drives US business investment behavior, shaping economic growth.
Business investment behavior in the USA was studied from 1947 to 2015. Two models were tested, with Model A showing that the replacement rate strongly influences investment decisions. This model also provides useful insights for short-term and long-term investment dynamics, as well as robust estimates for the substitution of capital for labor and output. Model B, which assumes a constant replacement rate, performed well only for the period 1947-1960 due to stable replacement investment during that time.