Meaning change in grammaticalization has been variously described in terms of decreasing semantic weight and increasing generality, abstraction, (inter)subjectivity or discourse orientation. The author shows that all these trends are subsumed by the notion of scope increase along a precise hierarchy of semantic and pragmatic layers of grammatical organization such as endorsed by Functional Discourse Grammar. The scope-increase hypothesis is immune from the exceptions and veritable counterexamples to all the aforementioned generalizations and has the decisive advantage of being more...

In this volume, long-standing assumptions about the formal changes involved in grammaticalization are evaluated in the light of the striking diversity of human languages. To this end, the traditional notions of morphological coalescence, syntactic fixation and phonological erosion are reassessed with regard to their relationship with the diachronic changes affecting the function of the construction and with larger-scale typological changes that affect the language as a whole (especially, shifts in morphological type and word-order patterns). The author reaches the conclusion that...