Introduction -- Dummy auxiliaries in monolingual first language acquisition -- Superfluous 'do' and comparison of spell-outs -- Dummy auxiliaries in Dutch first language acquisition -- Semantic dummy verbs in child Dutch -- There is a dummy 'is' in early first language acquisition -- Lightverbhood in child language: Evidence from Cypriot Greek -- Dummy auxiliaries in simultaneous and successive child bilingualism -- Reflections on dummy 'do' in child language and syntactic theory -- Dummy verbs in first and second language acquisition in German -- Dummy auxiliaries in children with SLI - a study on Dutch, in monolinguals and bilinguals -- Dummy auxiliaries in adult second language acquisition -- From dummy auxiliary to auxiliary in Moroccan adult learners' production and comprehension of Dutch -- Dummy verbs and the acquisition of verb raising in L2 German and French -- Broader perspectives on dummy auxiliaries -- Dummies and auxiliaries in the acquisition of L1 and L2 Dutch -- Child use of auxiliary + infinitive in Dutch: Acquisition device or reflection of the input -- Dummy auxiliaries in Dutch dialects, L1 and L2 acquisition -- Index.