Most deaf children have hearing parents who do not know a sign language at birth and are at risk of limited language input during early childhood. Studying these children as they learn a sign language has revealed that timing of first-language exposure critically shapes language outcomes. But the input deaf children receive in their first language…

Background: Little empirical research examines the process in which home literacy environment (HLE) in toddlerhood is associated with preschoolers' vocabulary and decoding skills using a large-scale dataset. Objective: The purposes of the current study were to (a) examine the differential effect of HLE in toddlerhood on preschoolers' vocabulary…

Examined the use of the mutual exclusivity constraint in naming objects among young children monolingual in English or bilingual in English/Urdu or in English/Greek. The study used three tests of the constraint: disambiguation, rejection and restriction. Findings revealed that bilingual children used the constraint to a lesser extent than…

This study examined the relationship among language proficiency, behavior problems, and other areas of development in 36 children (ages 36 to 40 months). A strong association was found between deficiencies in both expressive and receptive language and behavioral difficulties. Specifically, deficits in expressive language at age 2 were more…