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Virginia Valian – Language Learning and Development, 2024
The first stage of combinatorial speech is better described as variable than uniform. Talk of variants obscures two different aspects of language (knowledge and use) and two different aspects of language development -- acquisition of the grammar (competence) and deployment of the grammar in speaking and listening (performance). Null subjects and…
Descriptors: Phrase Structure, Language Acquisition, Language Variation, Grammar

Nuessel, Frank – Language Problems and Language Planning, 1993
The typology of planned languages, the number of such linguistic projects, and the most commonly used morphemes for these created languages are discussed. A total of 11 morpheme types are identified. (14 references) (Author/LB)
Descriptors: Form Classes (Languages), Language Classification, Language Planning, Language Typology