In 1998, Wolfe-Quintero, Inagaki & Kim published a monograph describing measures used in assessing writing development. Despite more recent research on linguistic development (e.g., Bulté & Housen 2012; Verspoor, Schmid & Xu 2012; Connor-Linton & Polio 2014), the volume is still a valuable resource and good starting point for anyone wanting to select measures of fluency, accuracy, and complexity for second language (L2) writing research. The volume, however, was limited to research on language development within the context of writing, and this is certainly one way to think about writing development. A recent edited volume by Manchón (2012), however, has greatly expanded conceptions of writing development showing that it involves much more that linguistic development, for example, genre knowledge (Tardy 2012) and goal setting (Cumming 2012) as well. Writing development can also focus on various aspects of the writing process and how writers' change their approach to text production as they become more expert writers (e.g., Sasaki 2004; Nicolás-Conesa, Roca de Larios & Coyle 2014). This expansion of focus, of course, makes development more difficult to define.