Gas well productivity trends do not show the same deterioration at present. (oakmark.com)
Though a 2 percent neutral real rate is assumed in the model, most economists agree that this number changes through time, based on productivity trends and exogenous shocks to the economy. (hussman.net)
So do the increase in the mobility of saving and investment; the increase in the desired exposure to foreign assets (the reduction in home bias); the financial market innovation that allows for better diversification and risk sharing; and the differentials in the pace of technology adoption or workplace practices that give rise to varying productivity trends across countries. (newyorkfed.org)