Return to text 9  On the relatively optimistic side, see Mokyr (2014) or Brynjolfsson and McAfee (2014). For a less optimistic perspective, see Gordon (2016) or Cowen (2011). Similarly, Fernald (2014) dates the most recent slowdown in measured productivity growth to before the great recession, in 2005.
For evidence that the recent slowdown cannot be fully explained by measurement difficulties, see Byrne, Fernald, and Reinsdorf (2016). Return to text  10  11  See Reifschneider, Wascher, and Wilcox (2015). Return to text  12  For a more detailed discussion, see Yellen (2015a).