14-month-olds exploit verbs' syntactic contexts to build expectations about novel words

Area of Science:

• Developmental Psychology
• Psycholinguistics
• Cognitive Science

Background:

• Infants develop grammatical understanding in their second year of life.
• This understanding is linked to frequent function words and their co-occurrence with content words.

Purpose of the Study:

• To investigate if 14-month-old infants can track co-occurrence patterns between function and content words.
• To determine if infants use syntactic contexts to form expectations about novel words.

Main Methods:

• A habituation paradigm was used with French-learning 14-month-olds.
• Infants were exposed to novel words preceded by determiners (for nouns) or pronouns (for verbs).
• Infants' looking times were measured during unexpected syntactic contexts.

Main Results:

• Infants looked longer at unexpected syntactic contexts.
• This indicates sensitivity to the co-occurrence of pronouns with verbs and determiners with nouns.
• Sensitivity to verb-pronoun co-occurrence emerges earlier than previously thought.

Conclusions:

• 14-month-old infants demonstrate an early ability to predict word categories based on function words.
• This study highlights infants' capacity for tracking syntactic co-occurrence patterns.
• Findings suggest a much earlier emergence of sensitivity to verb-pronoun co-occurrence than previously understood.