手法を比較

	Grammaticality Judgment Task	Elicited Imitation Task
分野	言語学	言語学
系統	Process / pipeline	Process / pipeline
提唱年	1965	2002
提唱者	Noam Chomsky (generative-linguistics tradition)	Applied linguists and child-language researchers (overview by Thora Vinther)
種類	Introspective elicitation of linguistic competence	Proficiency/implicit-knowledge measure via sentence repetition
原典	Chomsky, N. (1965). Aspects of the Theory of Syntax. MIT Press. ISBN: 9780262530071	Vinther, T. (2002). Elicited imitation: A brief overview. International Journal of Applied Linguistics, 12(1), 54–73.
別名	Grammaticality Judgement Task, GJT, Sentence Grammaticality Judgment	Elicited Imitation, Sentence Repetition Task, EIT
関連	3	3
概要	The grammaticality judgment task asks speakers to decide whether a sentence is grammatical — well-formed according to the rules of their language — and treats that decision as evidence about the mental grammar that produces it. Rooted in Noam Chomsky's generative program, where the native speaker's intuition is the primary data of linguistics, the task ranges from a single linguist consulting their own intuitions to large controlled experiments with binary, scaled, or forced-choice responses. It is a workhorse of syntactic theory and of second-language acquisition research, where it probes what learners know about a target language beyond what they can produce.	In the elicited imitation task, participants listen to spoken sentences — typically of increasing length and grammatical complexity — and repeat each one back. The key insight is that when a sentence exceeds short-term verbatim memory, accurate reproduction is impossible by rote echoing; the listener must comprehend the sentence and reconstruct it through their own grammar. Reproduction accuracy therefore indexes implicit linguistic proficiency rather than parroting. Widely used in second-language acquisition as an efficient proficiency measure and in child-language research to gauge developing grammar, it has been validated as a window onto implicit knowledge.