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arXiv · 2605.19718

CAIT: A Syntactic Parsing Toolkit for Child-Adult InTeractions

Francesca Padovani·Xiulin Yang·Bastian Bunzeck·Jaap Jumelet·Yevgen Matusevych·Nathan Schneider·Arianna Bisazza
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Abstract

CHILDES is a paramount resource for language acquisition studies -- yet computational tools for analyzing its syntactic structure remain limited. Leveraging the recent release of the UD-English-CHILDES treebank with gold-standard Universal Dependencies (UD) annotations, we train a state-of-the-art dependency parser specifically tailored to CHILDES. The parser more accurately captures syntactic patterns in child-adult interactions, outperforming widely used off-the-shelf English parsers, including SpaCy and Stanza. Alongside the parser, we also release a Part-of-Speech tagger and an utterance-level construction tagger, which together form the open-source Syntactic Parsing Toolkit for Child-Adult InTeractions (CAIT). Through a detailed error analysis and a case study tracking the distribution of syntactic constructions across developmental time in CHILDES, we demonstrate the practical utility of the toolkit for large-scale, reproducible research on language acquisition.

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Francesca Padovani, Xiulin Yang, Bastian Bunzeck, Jaap Jumelet, Yevgen Matusevych, Nathan Schneider, Arianna Bisazza. 2026-05-19. CAIT: A Syntactic Parsing Toolkit for Child-Adult InTeractions. https://arxiv.org/abs/2605.19718

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