“…Obviously, there is no a priori reason why the spatiotemporal spreading of disorder and crime would stop at the border of an administrative area. Nevertheless, many urban sociologists and criminologists have investigated BWT in a priori defined administrative areal units at a range of different scales, such as street (face) blocks (see, e.g., Keizer, Lindenberg, and Steg 2008;Perkins and Taylor 1996;Robinson et al 2003;Taylor, Gottfredson, and Brower 1984) or block groups (Yang 2010), neighborhoods, neighborhood clusters, and census tracts (e.g., Sampson and Raudenbush 1999;Skogan 1990;Wilcox et al 2004), and even cities or counties (Gau and Pratt 2010;Xu, Fiedler, and Flaming 2005).…”