Lexical repertoire of 24 and 30-month-old children speaking Brazilian portuguese: preliminary results.
Carolina Felix Providello, Ana Paola Nicolielo Carrilho, Vânia Peixoto and 2 others
PMID 38775528WHAT IT FOUND
Brazilian Portuguese children spoke a median of 283 words at 24 months and 401 at 30 months.
This far exceeds the 50-word milestone, suggesting the CDC's delay of this benchmark to 30 months may cause missed referrals.
Key findings
01The median number of words spoken was 283 at 24 months and 401 at 30 months.
02School attendance showed a significant association with lexical repertoire, while socioeconomic status, parents' education, siblings, and screen time did not.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample was small (30 children) and recruited via social media, limiting generalizability. The study is described as preliminary, and the authors note replication is underway. Socioeconomic status and parental education levels in the sample were higher than the general population, potentially skewing vocabulary norms.
Declared interests
Nothing to declare.
The easy way to misread this
Do not assume this study proves school attendance causes increased vocabulary. It reports an association in a small, preliminary sample and does not control for other factors that might explain the difference.