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Main Authors: Martínez, Héctor Javier Vázquez, Yang, Charles
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2605.28616
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author Martínez, Héctor Javier Vázquez
Yang, Charles
author_facet Martínez, Héctor Javier Vázquez
Yang, Charles
contents We introduce quantitative metrics for child language acquisition to evaluate language models. Our focus is on the formal syntactic and functional discourse properties of determiners in English, which young children acquire early and accurately. We propose Contextual Alternative Choice (CAC), a new prompting method which provides targeted tests for both syntactic and discourse knowledge of language. The method enables direct comparison of language models against children, and more importantly, against statistical benchmarks independently established in empirical research. No current model trained on a comparable amount of data simultaneously meet both formal and functional benchmarks like human children, but some very large models do. We present our results as methodological and technical contributions, with specific emphasis on cognitive status of language models.
format Preprint
id arxiv_https___arxiv_org_abs_2605_28616
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Measuring Form and Function in Language Models
Martínez, Héctor Javier Vázquez
Yang, Charles
Computation and Language
Artificial Intelligence
We introduce quantitative metrics for child language acquisition to evaluate language models. Our focus is on the formal syntactic and functional discourse properties of determiners in English, which young children acquire early and accurately. We propose Contextual Alternative Choice (CAC), a new prompting method which provides targeted tests for both syntactic and discourse knowledge of language. The method enables direct comparison of language models against children, and more importantly, against statistical benchmarks independently established in empirical research. No current model trained on a comparable amount of data simultaneously meet both formal and functional benchmarks like human children, but some very large models do. We present our results as methodological and technical contributions, with specific emphasis on cognitive status of language models.
title Measuring Form and Function in Language Models
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2605.28616