Frontmatter -- Table of contents -- Introduction -- Parameter-based and Minimalist approaches -- Methodological considerations on grammar variation. The right periphery as an OV/VO deciding parameter more so than the left periphery: Gradience in the verb cluster -- Variation as lexical choice: have, got and the expression of possession -- Variation in Icelandic morphosyntax -- Constraint-based approaches -- The predicative as a source of grammatical variation -- Morphological variation:A declarative approach -- Different notions of variation and their reflexes in Swiss German relativization -- From documentation to grammatical description: Prepositional phrases in Ruhrdeutsch -- Usage-based, construction-based and statistical approaches -- Can we factor out free choice? -- Empirical syntax: Idiolectal variability in two- and three-verb clusters in regional standard Dutch and Dutch dialects -- Towards a multivariate model of grammar: The case of word order variation in Dutch clause final verb clusters -- Synchronic variation in diachronic perspective: Question formation in Québec French -- Agreement in English dialects -- Semi-modal variation -- Variation in Komi object marking -- How lexicalization reflected in hyphenation affects variation and word-formation -- Variation in German adjective inflection: A corpus study -- Backmatter