Infants' acceptance of phonotactically illegal word forms as object labels

Area of Science:

• Developmental Psychology
• Cognitive Science
• Linguistics
• Infant Language Acquisition

Background:

• Early word learning is crucial for cognitive development.
• Infants' ability to map sounds to meaning is complex.
• Phonotactic legality influences early word recognition.

Purpose of the Study:

• To examine 16- and 20-month-old infants' flexibility in mapping phonotactically illegal words to objects.
• To investigate the role of referential cues in infant word learning.
• To understand the interplay between phonological development and word acquisition.

Main Methods:

• Associative word-learning task with novel, phonotactically illegal Czech words.
• Training phase manipulating the highlight of referential cues.
• Habituation procedure with novel objects and unfamiliar labels.

Main Results:

• 16-month-olds successfully mapped words to objects when referential cues were present.
• 20-month-olds did not show successful mapping, regardless of referential cues.
• Infants of both ages failed to learn word-object associations without referential cues.

Conclusions:

• Referential cues are critical for infants to learn novel word mappings, especially for phonotactically unusual words.
• Infant word learning flexibility changes between 16 and 20 months.
• Early sound system development interacts significantly with word learning capacities.