Your child's vocabulary at age two could reveal their future success, researchers have claimed.
They found children with better academic and behavioural functioning when they started kindergarten often had better educational and societal opportunities as they grew up.
They say children entering kindergarten with higher reading and math achievements are more likely to go to college, own homes, be married, and live in higher-income neighbourhoods as adults.
It found that children with larger oral vocabularies by age 2 arrived at kindergarten better prepared academically and behaviourally than their peers.
The study was conducted by researchers at the Pennsylvania State University, the University of California, Irvine, and Columbia University, who analysed nationally representative data for 8,650 children in the Early Childhood Longitudinal Study, and appears in the journal Child Development.
Adds George Farkas, professor of education at the University of California, Irvine, who coauthored the study: 'These oral vocabulary gaps emerge as early as 2 years.
'Early interventions that effectively increase the size of children's oral vocabulary may help at-risk 2-year-olds subsequently enter kindergarten classrooms better prepared academically and behaviourally. '