Cross-language differences in cue use for speech segmentation.

Area of Science:

• Psycholinguistics
• Speech Perception
• Language Acquisition

Background:

• Continuous speech segmentation is crucial for language comprehension.
• Suprasegmental cues, such as vowel lengthening and pitch movement, play a role in speech segmentation.
• Cross-linguistic differences in phonological structure may influence cue utilization.

Purpose of the Study:

• To investigate how English, French, and Dutch listeners use suprasegmental cues for continuous speech segmentation.
• To determine whether cue utilization for speech segmentation is language-universal or language-specific.
• To examine the role of vowel lengthening and pitch movement in segmenting artificial languages.

Main Methods:

• Two artificial-language learning experiments were conducted.
• Participants heard sequences of syllables forming recurring "words" demarcated by transitional probabilities, left-edge cues, or right-edge cues.
• Vowel lengthening and pitch movement were tested as suprasegmental cues.

Main Results:

• All listener groups benefited from vowel lengthening at word right edges but not left edges.
• English listeners utilized pitch movement at left edges, French listeners at right edges, and Dutch listeners at both.
• Dutch listeners showed greater attention to suprasegmental variation than English listeners.

Conclusions:

• Speech segmentation involves language-universal mechanisms (e.g., final lengthening) and language-specific effects.
• Pitch movement as a cue for prominence placement varies across languages.
• Phonological characteristics, like stress patterns, influence listeners' sensitivity to suprasegmental cues.