“…Previous studies on this issue, in general, can be categorized in four different forms (Cetin 2013;Pradhan et al 2016), namely supply-leading hypothesis (SLH), demand-following hypothesis (DFH), feedback hypothesis (FBH), and neutrality hypothesis (NLH). The SLH shows unidirectional causality from innovation activities to economic growth (see, for instance, Pradhan et al (2016), Cetin (2013) Guloglu and Tekin (2012), Fan (2011), Yang (2006). The DFH reflects unidirectional causality from economic growth to innovation activities (see, for instance, Pradhan et al (2016), Sadraoui et al (2014), Cetin (2013), Sinha (2008), Howells (2005)).…”