“…Indeed, many recent studies look at measurement problems in services, including Wölfl (2003Wölfl ( , 2004, Triplett andBosworth (2004, 2008), Crespi, Criscuole, Haskel, and Hawkes (2006), Hartwig (2008), or Inklaar, Timmer, and van Ark (2008a, 2008b. Triplett and Bosworth in particular conclude that in the USA, productivity measurement in services has improved considerably, even as numerous areas for further improvement still exist.…”