Assessing the influence of attractor-verb distance on grammatical agreement in humans and language models

Christos Zacharopoulos, Théo Desbordes, Mathias Sablé-Meyer


Abstract
Subject-verb agreement in the presence of an attractor noun located between the main noun and the verb elicits complex behavior: judgments of grammaticality are modulated by the grammatical features of the attractor. For example, in the sentence ``The girl near the boys likes climbing'', the attractor (boys) disagrees in grammatical number with the verb (likes), creating a locally implausible transition probability. Here, we parametrically modulate the distance between the attractor and the verb while keeping the length of the sentence equal. We evaluate the performance of both humans and two artificial neural network models: both make more mistakes when the attractor is closer to the verb, but neural networks get close to the chance level while humans are mostly able to overcome the attractor interference. Additionally, we report a linear effect of attractor distance on reaction times. We hypothesize that a possible reason for the proximity effect is the calculation of transition probabilities between adjacent words. Nevertheless, classical models of attraction such as the cue-based model might suffice to explain this phenomenon, thus paving the way for new research. Data and analyses available at https://osf.io/d4g6k
Anthology ID:
2023.emnlp-main.998
Volume:
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing
Month:
December
Year:
2023
Address:
Singapore
Editors:
Houda Bouamor, Juan Pino, Kalika Bali
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
16081–16090
Language:
URL:
https://aclanthology.org/2023.emnlp-main.998
DOI:
10.18653/v1/2023.emnlp-main.998
Bibkey:
Cite (ACL):
Christos Zacharopoulos, Théo Desbordes, and Mathias Sablé-Meyer. 2023. Assessing the influence of attractor-verb distance on grammatical agreement in humans and language models. In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, pages 16081–16090, Singapore. Association for Computational Linguistics.
Cite (Informal):
Assessing the influence of attractor-verb distance on grammatical agreement in humans and language models (Zacharopoulos et al., EMNLP 2023)
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https://aclanthology.org/2023.emnlp-main.998.pdf
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