Word Segmentation Cues in German Child-Directed Speech: A Corpus Analysis

Area of Science:

• Linguistics
• Developmental Psychology
• Speech Science

Background:

• Infants must segment words from continuous speech to acquire language.
• Previous research shows infants use multiple cues, but naturalistic speech distributions are understudied.
• German child-directed speech (CDS) offers a unique context for studying segmentation cues.

Purpose of the Study:

• To comprehensively analyze the distribution of word stress, transitional probabilities (TPs), and word frequencies in German CDS.
• To determine the reliability of these cues for word segmentation in infants.
• To provide data guiding future experimental research on infant language acquisition.

Main Methods:

• Corpus analysis of 7 hours of German CDS from the CHILDES database.
• Coding of word stress, TPs, lexical, and sublexical frequencies.
• Analysis of word and utterance structure, including monosyllabic words and function word prevalence.

Main Results:

• Primary stress marked the initial syllable in 97% of words, indicating stress as a reliable word onset cue.
• Transitional probabilities were higher within words than between words.
• Most words were monosyllabic (78%), and frequent words were predominantly function words (82% of top 50).

Conclusions:

• German CDS provides infants with multiple converging cues for word segmentation.
• Stress, TPs, and word frequency distributions support robust word boundary identification.
• Openly available data will facilitate further experimental investigations into infant language processing.