Steering Pragmatic Interpretation in LLMs: A Diagnostic Evaluation of Few-Shot and Reasoning-Based Prompting for Indirect Speech Acts.

Massimiliano Orsini, Dominique Brunato


Abstract
Pragmatic competence poses a persistent challenge for large language models, as it requires context-dependent inference beyond literal meaning. This study examines whether few-shot prompting can reliably steer LLMs toward appropriate interpretations of indirect speech acts under small-data conditions. Focusing on Italian, we evaluate three LLMs on a small dataset that captures pragmatic ambiguity through graded plausibility judgments. We compare a zero-shot baseline with multiple few-shot prompting configurations that vary in the number and composition of demonstrations, as well as in the presence of explicit pragmatic guidance. Results show that few-shot prompting does not yield robust or monotonic improvements overall. While performance improves substantially for conventionalized indirect speech acts, gains for non-conventionalized indirect speech acts are unstable and limited. In contrast, introducing explicit pragmatic reasoning along with demonstrations through guided chain-of-thought prompting appears more promising. Overall, these findings highlight the limits of example-based steering for pragmatic inference and suggest that explicitly modeling pragmatic reasoning may be a more effective direction in small-data settings.
Anthology ID:
2026.nonliteral-1.2
Volume:
Proceedings of Learning Non-Literal Expressions with Small Data @ LREC 2026
Month:
May
Year:
2026
Address:
Palma, Mallorca (Spain)
Editors:
Markus Egg, Valia Kordoni
Venues:
NonLiteral | WS
SIG:
Publisher:
ELRA Language Resources Association (ELRA)
Note:
Pages:
12–20
Language:
External URL:
https://lrec.elra.info/lrec2026-ws-nonliteral-02
DOI:
10.63317/49dfcg89tqms
Bibkey:
Cite (ACL):
Massimiliano Orsini and Dominique Brunato. 2026. Steering Pragmatic Interpretation in LLMs: A Diagnostic Evaluation of Few-Shot and Reasoning-Based Prompting for Indirect Speech Acts.. In Proceedings of Learning Non-Literal Expressions with Small Data @ LREC 2026, pages 12–20, Palma, Mallorca (Spain). ELRA Language Resources Association (ELRA).
Cite (Informal):
Steering Pragmatic Interpretation in LLMs: A Diagnostic Evaluation of Few-Shot and Reasoning-Based Prompting for Indirect Speech Acts. (Orsini & Brunato, NonLiteral 2026)
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