“…This literature is primarily concerned with raising critical questions about the NQF, rather than providing firm empirical answers to important questions (e.g. Black 2001;Irwin, Elley, and Hall 1995;Jordan and Strathdee 2001;Roberts 1997;Robson 1994;Sako 1999;Strathdee 2003Strathdee , 2004Strathdee , 2005aStrathdee , 2006. However, as described in more detail below, a growing number of empirical research papers have been published on the impact of the NQF.…”