This volume, which emerged from a workshop at the New Reflections on Grammaticalization 4 conference held at KU Leuven in July 2008, contains a collection of papers which investigate the relationship between synchronic gradience and the apparent gradualness of linguistic change, largely from the perspective of grammaticalization. In addition to versions of the papers presented at the workshop, the volume contains specially commissioned contributions, some of which offer commentaries on a subset of the other articles. The articles address a number of themes central to grammaticalization studies, such as the role of reanalysis and analogy in grammaticalization, the formal modelling of grammaticalization, and the relationship between formal and functional change, using data from a range of languages, and (in some cases) from particular electronic corpora.