Multilinguals are not multiple monolinguals. Yet multilingual assessment proceeds through monolingual norms, as if fair conclusions were possible in the absence of fair comparison. In addition, multilingualism concerns what people do with language, not what languages do to people. Yet research focus remains on multilinguals' languages, as if languages existed despite their users. This book redresses these paradoxes. Multilingual scholars, teachers and speech-language clinicians from Europe, Asia, Australia and the US contribute the first studies dedicated to multilingual norms, those found in real-life multilingual development, assessment and use. Readership includes educators, clinicians, decision-makers and researchers interested in multilingualism.