Learning phonotactic constraints from brief auditory experience

Area of Science:

• Psycholinguistics
• Speech Perception
• Language Acquisition

Background:

• Phonotactic regularities are rules governing permissible sound sequences in a language.
• English has specific phonotactic constraints, but other languages may have different or more complex rules.
• Understanding how adults acquire new phonotactic rules sheds light on the flexibility of speech perception.

Purpose of the Study:

• To investigate if adult English speakers can learn phonotactic regularities absent in English from brief auditory exposure.
• To determine the types of phonotactic constraints that are most readily acquired.
• To explore the influence of adjacent vowels versus speaker voice on learning these constraints.

Main Methods:

• Adult participants were exposed to consonant-vowel-consonant (CVC) syllables with novel phonotactic restrictions.
• A speeded repetition task was used to assess learning of these regularities.
• The study examined learning of first-order (consonant position) and second-order (consonant-vowel and consonant-voice dependent) regularities.

Main Results:

• Participants demonstrated rapid learning of first-order phonotactic regularities.
• Learning of second-order regularities, where consonant position depended on the adjacent vowel, was also observed.
• No significant learning occurred for second-order regularities contingent on the speaker's voice.

Conclusions:

• Adults can quickly acquire novel phonotactic constraints through listening experience.
• The learnability of phonotactic rules depends on the nature of the contingency, with consonant-vowel dependencies being more easily acquired than consonant-voice dependencies.
• These findings highlight the adaptability of the human speech perception system to new linguistic input.