Sensitivity of children's inflection to grammatical structure

Area of Science:

• Psycholinguistics
• Developmental Psychology
• Computational Linguistics

Background:

• Connectionist models often use phonological features for word inflection.
• Adult language processing distinguishes between phonological and non-phonological cues for inflection.
• Homophones with different meanings can have different inflectional patterns.

Purpose of the Study:

• To investigate how children process inflectional morphology.
• To determine if children, like adults, use non-phonological information for word inflection.
• To test the hypothesis that irregular inflections are lexically stored while regular inflections follow a default rule.

Main Methods:

• Four experiments were conducted with 70 children aged 3 to 10 years.
• Children were presented with homophonous words with different meanings and inflectional patterns.
• Analysis of adult speech to children was also performed.

Main Results:

• Children showed sensitivity to non-phonological information in word inflection.
• They were more likely to produce regular inflected forms for derived words compared to irregular counterparts.
• Children's inflectional patterns mirrored adult patterns, distinguishing regular and irregular forms.

Conclusions:

• Children's language systems distinguish between regular and irregular inflectional mechanisms.
• Morphological structure plays a key role in determining inflectional regularity.
• Irregular inflections are linked to the lexicon, while regular inflections use a default rule.