“…Both within the United Kingdom (Boyle, Exeter, and Flowerdew 2004;Leyland 2004;Dorling 1997;Leyland 2004;Shaw et al 1999;, between provinces in Canada (Mustard, Derksen, and Black 1999;Manuel and Hockin 2000), and for the 2,068 counties in the United States (Ezzati et al 2008), a tendency from convergence in the past to divergence in the more recent past follows from the various studies; in New Zealand, recent divergence has been observed as well (Pearce and Dorling 2006). On the other hand, Gächter and Theurl (2011) observed continuing convergence in Austria. In addition, Valkonen (2001) observed clear differences between several European countries in the trend in regional differences.…”