Journal
JOURNAL OF MEMORY AND LANGUAGE
Volume 131, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jml.2023.104429
Keywords
Pragmatics; Non-linguistic communication; Drawings; Scalar implicature; Language acquisition; Informativeness
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A foundational principle of communication is that speakers should provide sufficient information in conversation. This study investigates whether 4- and 5-year-old children and adults expect drawings to be informative, similar to utterances, based on the creator's knowledge. The results show that 5-year-olds and adults apply the principle of informativeness to non-linguistic symbols, while 4-year-olds do not; furthermore, the success of 5-year-olds depends on the features of the symbols.
A foundational principle of communication is that speakers should offer as much information as required during conversation. Thus, if a speaker offers a statement with limited information (e.g., I like the candle when asked about a gift containing a candle and a sweater), the listener often takes the speaker to imply that a more informative statement (I like the candle and the sweater) does not hold. Classic theories of communication have proposed that the principle of informativeness extends to purposeful exchanges beyond linguistic in-teractions, but relevant evidence so far is limited. In a set of studies, we adopt a simple visual-world paradigm to investigate whether 4-and 5-year-old children and adults expect drawings, like utterances, to be informative in accordance with the creator's knowledge. We find that 5-year-olds and adults (but not 4-year-olds) apply the principle of informativeness to non-linguistic symbols; furthermore, the 5-year-olds' success in this task depends on features of the symbols. We discuss the implications of these findings for debates over the mechanisms un-derlying pragmatic inference, as well as for children's developing understanding of the symbolic function of drawings.
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