Can Early Language Development Promote Children's Psychological Wellbeing?
We know oral language is young children's door into the world of knowledge and ideas, the foundation for reading, and the bedrock of all academic learning. But, can language also protect young kids against behavioral problems?
A number of studies have identified a co-occurrence of language delays and behavioral maladjustment, an association that remains after controlling for socio-demographic characteristics and academic achievement (here and here). However, most research on the issue has been cross-sectional and correlational making it hard to establish whether behavioral issues cause language delays, language delays cause behavioral issues, or another factor is responsible for both.
A recent paper by Marc Bornstein, Chun-Shin Hahn, and Joan Suwalsky (2013) was able to shed some light on these questions concluding that "language competencies in early childhood keep behavioral adjustment problems at bay." This is important given the fact that minority children raised in poverty tend to have smaller than average vocabularies and are also overrepresented in pre-K expulsions and suspensions.