Segment durations and accent as cues to word segmentation in Dutch

Area of Science:

• Psycholinguistics
• Phonetics
• Auditory Perception

Background:

• Accurate word segmentation is crucial for speech comprehension.
• Both accentuation and durational cues play roles in signaling word boundaries.

Purpose of the Study:

• To investigate the distinct contributions of accentuation and durational cues to perceived word segmentation in Dutch.
• To determine how accent position influences the effectiveness of durational boundary markers.

Main Methods:

• A listening experiment using 36 Dutch two-word phrases with ambiguous boundaries.
• Four groups of 20 subjects performed forced binary choices for boundary positions.
• Manipulated durational cues (consonant duration, vowel rise time) and accent position.

Main Results:

• Durational word boundary cues are perceptually significant, but primarily when word-initial.
• Perceived word segmentation accuracy increases when the second word (post-boundary) is accented.
• Accentuation enhances the salience of phonetic boundary markers.

Conclusions:

• Durational cues are vital for word segmentation, particularly in word-initial positions.
• Accentuation significantly aids word segmentation by amplifying phonetic boundary cues.
• The findings illuminate the interplay between prosody and phonetic information in speech processing.