A within-subjects comparison of the acquisition of quantity-related inferences

Alicia Parrish, Ailís Cournane

Abstract


This study directly compares quantity inferences from scalar implicatures (‘Some of the ducks are black’) and uniqueness presuppositions in definites (‘the duck is black’) to exhaustivity inferences in English it-clefts (‘It’s the duck that’s black’) for which the theoretical literature disagrees on the source of inference – pragmatic (like scalar implicatures), or semantic (like presuppositions). We investigate whether within-subjects correlations in acquisition can inform us about the source of exhaustivity inferences. Assuming comprehension is achieved once the necessary basis for meaning is acquired, it-clefts should pattern with presupposition judgments if computing a presupposition is involved and should pattern with scalar implicature judgments if computing an implicature is involved. We conduct three experiments to test how closely it-cleft judgments pattern with other quantityrelated inferences, keeping materials maximally similar. The first two experiments test adult participants using a Truth Value Judgment Task and then a 3-point Rating Task; we find that adults’ response patterns to under-informative uses of these constructions differ both across individuals and across inference types, with the Rating Task giving more informative results. In the third experiment, we use the 3-point Rating Task with 4-, 5-, and 6- year olds to characterize response patterns across the three inference types for each individual subject. We find that the individual response patterns children exhibit are consistent with the theory that it-cleft exhaustivity shares an underlying cognitive source with the computation of presupposition inferences, but not with scalar implicature inferences.


Keywords


clefts; exhaustivity; acquisition; pragmatics; semantics; experimental

Full Text:

PDF


DOI: https://doi.org/10.3765/plsa.v5i1.4731

Copyright (c) 2020 Alicia Parrish

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Donate to the Open-Access Fund of the LSA

Linguistic Society of America


Advancing the Scientific Study of Language since 1924

ISSN (online): 2473-8689

This publication is made available for free to readers and with no charge to authors thanks in part to your continuing LSA membership and your donations to the open access fund.