Dr. Chafetz   I remember one colleague who was involved in norming the WMS in the UK telling me that he was convinced by various observations that some volunteers were not making a full effort. They were going through the motions to get the monetary ...

There's a very good chapter on the use of demographic adjustments to norms in the Holdnack et al. (2013) book: WAIS-IV, WMS-IV, and ACS: Advanced Clinical Interpretation, Academic Press (Elsevier).  The chapter discusses the relevant research on demographic ...