Word Segmentation Cues in German Child-Directed Speech: A Corpus Analysis.
Katja Stärk, Evan Kidd, Rebecca L A Frost
PMID 33517856WHAT IT FOUND
German child-directed speech relies heavily on word-initial stress and short, frequent function words.
Transitional probabilities between syllables also mark word boundaries, particularly in the backward direction. These cues are consistently present in the input infants receive.
Key findings
01Approximately 97% of words in German child-directed speech are stressed on the first syllable.
02Transitional probabilities between syllables are higher within words than between words, and higher in the backward direction than the forward direction.
03The 50 most frequent words constitute 54% of the corpus and are almost exclusively monosyllabic function words.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The analysis covers a broad age range (6 to 20 months), but child-directed speech changes as children develop, so the cues described may not be uniform across all ages. The corpus size (7.5 hours) is small compared to modern day-long recording studies, though the authors argue distributional statistics are stable. The study describes the input available to learners but does not measure how infants actually use these cues or whether they successfully segment words.
Declared interests
Funding was provided by the Max-Planck-Gesellschaft and the Australian Research Council. The authors disclosed no other conflicts of interest.
The easy way to misread this
Do not interpret the high availability of segmentation cues in the input as evidence that all German-acquiring infants successfully use them. This is a corpus analysis of what caregivers say, not an experimental measure of what children understand or how they learn.