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Blog post from ASHA Leader Magazine

The size of children’s oral vocabularies at 2 years old may predict their eventual kindergarten readiness, according to a new study by researchers at Pennsylvania State University, Columbia University and University of California, Irvine.

After analyzing data from 8,650 children in the Early Childhood Longitudinal Study-Birth Cohort, found that 2-year-olds with larger vocabularies may be better prepared than peers, both academically and behaviorally, when they later enter kindergarten.  In the study, those with bigger vocabularies tended to be female, from higher-income families and recipients of higher-quality parenting.

“Our findings provide compelling evidence for oral vocabulary’s theorized importance as a multifaceted contributor to children’s early development, ” says lead author Paul Morgan, Penn State associate professor of education.