The polysemy of the words that children learn over time
Here we study polysemy as a potential learning bias in vocabulary learning in children. Words of low polysemy
could be preferred as they reduce the disambiguation effort for the listener. However, such preference could be a side-effect of
another bias: the preference of children for nouns in combination with the lower polysemy of nouns with respect to other
part-of-speech categories.
Our results show that mean polysemy in children increases over time in two phases, i.e. a fast growth till the
31st month followed by a slower tendency towards adult speech. In contrast, this evolution is not found in adults interacting with
children. This suggests that children have a preference for non-polysemous words in their early stages of vocabulary acquisition.
Interestingly, the evolutionary pattern described above weakens when controlling for syntactic category (noun, verb, adjective or
adverb) but it does not disappear completely, suggesting that it could result from a combination of a standalone bias for low
polysemy and a preference for nouns.
Article outline
- Introduction
- Materials and methods
- CHILDES database
- WordNet lexical database
- SemCor corpus
- TreeTagger
- Processing data
- Mathematical computations
- Fisher method of randomization
- Binomial tests
- Breakpoint calculation
- Anova test computation
- Results
- Evolution of the polysemy over time
- Interaction between polysemy and syntactic category
- Discussion
- Conclusions
- Acknowledgements
-
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