Frequent vs. infrequent words shape toddlers' real-time sentence comprehension.
Christine E Potter, Casey Lew-Williams
PMID 37401467WHAT IT FOUND
Toddlers understood frequent words better than infrequent ones, but unusual sentence frames did not disrupt their comprehension.
This suggests that while word familiarity drives real-time processing, toddlers are flexible enough to listen through unexpected phrasing to find the meaning.
Key findings
01Toddlers showed significantly higher accuracy in recognizing high-frequency nouns compared to low-frequency nouns.
02There was no significant difference in comprehension when words appeared in typical versus atypical sentence frames.
03Children with smaller vocabularies showed a larger gap in accuracy between high- and low-frequency words than those with larger vocabularies.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study used a small sample of 34 toddlers, which limits the generalizability of the findings. The sentence frames, while atypical, remained natural and grammatically correct, so it is unclear if more severe syntactic violations would disrupt comprehension. Word frequency was based on general norms, which may not reflect the specific input each child received at home.
Declared interests
The authors declare no competing interests.
The easy way to misread this
Do not assume that unusual sentence structures are a primary barrier to comprehension for toddlers. This study found that while word frequency significantly impacted understanding, the typicality of the sentence frame did not, suggesting children can effectively listen through unexpected phrasing to identify known words.