Cascades in language acquisition: Re-thinking the linear model of development.

The first 5 years of life are characterized by incredible growth across domains of child development. Drawing from over 50 years of seminal research, this chapter contextualizes recent advances in language sciences through the lens of developmental cascades to explore complexities and connections in acquisition. Converging evidence-both classic and contemporary-points to the many ways in which advances in one learning system can pose significant and lasting impacts on the advances in other learning systems. This chapter reviews evidence in developmental literature from multiple domains and disciplines (i.e., cognitive, social, motor, bilingual language learning, and communication sciences and disorders) to examine the phenomenon of developmental cascades in language acquisition.