“…In less ideologically charged words, the dependent variable aims to capture whether contracting out leads to lower service costs without eroding quality, preferably with an increase in quality alongside reduced costs (Osborne and Gaebler, 1993). Supporters of New Public Management believe that both cost efficiency and service quality can be measured, but in practice this is often difficult (Hood and Dixon, 2015; Lindholst et al, 2015; Lindholst et al, 2018). Moreover, whether contracting out improves value for money is contested, as empirical studies point in different directions and many of them suffer from a series of methodological problems (see Boyne, 1998).…”