The blowfish effect: children and adults use atypical exemplars to infer more narrow categories during word learning

Publication Year
2019

Type

Journal Article
Abstract

Learners preferentially interpret novel nouns at the basic level (“dog”) rather than at a more narrow level (“Labrador”). This “basic-level bias” is mitigated by statistics: children and adults are more likely to interpret a novel noun at a more narrow label if they witness “a suspicious coincidence” — the word applied to 3 exemplars of the same narrow category. Independent work has found that exemplar typicality influences learners’ inferences and category learning. We bring these lines of work together to investigate whether the content (typicality) of a single exemplar affects the level of interpretation of words and whether an atypicality effect interacts with input statistics. Results demonstrate that both 4-5 year olds and adults tend to assign a narrower interpretation to a word if it is exemplified by an atypical category member. This atypicality effect is roughly as strong as, and independent of, the suspicious coincidence effect, which is replicated.

Journal
Journal of child language
Volume
46
Pages
938–954
Topic
Lexical Semantics