noun
explanatory adequacy
A technical term in linguistics, particularly in generative grammar, referring to a theory's ability to explain how children acquire language from limited input.
チョムスキーは、言語理論が説明的妥当性を持つべきだと主張した。
Chomsky argued that a linguistic theory should have explanatory adequacy.
Compound of 説明的 (explanatory) + 妥当性 (adequacy, validity). A calque from English 'explanatory adequacy', a term introduced in generative linguistics.