“…Previously, primary data were often culled from monumental dialect atlases such as Blancquaert and Pée's Reeks Nederlandse Dialectatlassen (RND). 5 Since the 2000s, an ever growing body of (predominantly Flemish) studies has been going beyond impressionistic assessments of (mostly) absolute differences (in particular, Grondelaers, Speelman, & Carbonez 2001, Grondelaers et al 2002, De Sutter 2005, Tummers 2005, Vandekerckhove 2005, Diepeveen et al 2006, Speelman & Geeraerts 2009, Colleman 2010, Levshina et al 2013, Gyselinck & Colleman 2016, Fehringer 2017, Pijpops & F. Van de Velde 2018, Pijpops 2019, 2020. 6 Building on careful statistical analysis of corpus data, many of these studies were able to gauge not only the distribution of competing grammatical constructions in BD and ND, but, crucially, also the nature and the significance of the language-internal and language-external factors that determine choices in both varieties and the extent to which they do so.…”