Infants' reliance on a social criterion for establishing word-object relations

Area of Science:

• Developmental Psychology
• Cognitive Science
• Linguistics

Background:

• Children learn language through observing word-object co-occurrences.
• Social cues, like speaker's referential intent, may guide word learning.
• Understanding how infants process these social cues is crucial for language acquisition.

Purpose of the Study:

• To investigate whether infants aged 15-20 months use speaker's referential intent to learn word-object mappings.
• To determine the age at which social cues become critical for establishing word-object links.

Main Methods:

• Two studies exposed infants (15-20 and 18-20 months) to novel labels for novel objects.
• Labels were presented either by a visible, attending speaker (coupled) or an unseen speaker (decoupled).
• Comprehension was tested to assess word-object association formation.

Main Results:

• Infants aged 18-20 months successfully mapped novel labels to objects in the coupled condition.
• No stable word-object link was formed in the decoupled condition for 18-20 month olds.
• Covariation between label and object was equivalent across conditions, highlighting the role of social cues.

Conclusions:

• By 18-20 months, infants rely on speaker's social cues, specifically referential intent, to form word-object mappings.
• This indicates a developmental shift in language acquisition, incorporating social context.
• Social attunement is a key factor in early word learning.