The aim of this Campbell systematic review is to examine the effectiveness of speech and
language interventions for children with primary speech and language delay/disorder. Thirty …

Scientific studies have consistently reported that, in group analyses, twin children have
higher rates of language delay when compared with single-born children. This paper …

This article presents a theoretical framework designed to accommodate core evidence that
the abilities to repeat nonwords and to learn the phonological forms of new words are …

Purpose Understanding the long-term outcomes of developmental language difficulties is
key to knowing what significance to attach to them. To date, most prognostic studies have …

Despite the importance of learning abilities and disabilities in education and child
development, little is known about their genetic and environmental origins in the early …

Some children learn to read accurately despite language impairments (LI). Nine‐to 10‐year‐
olds were categorized as having LI only (n= 35), dyslexia (DX) only (n= 73), LI+ DX (n= 54) …

This study of 241 parent–child dyads from the United Kingdom (N= 120, Mage= 3.92, SD=
0.53) and Hong Kong (N= 121, Mage= 3.99, SD= 0.50) breaks new ground by adopting a …

Abstract Language development in typically developing children (TD) has traditionally been
investigated in relation to environmental factors, while language in children with autism …

The Twins' Early Development Study (TEDS) is a large-scale longitudinal study of twins from
early childhood through adolescence. Since its conception, TEDS has had as its focus the …

Early language development is known to be under genetic influence, but the genes affecting
normal variation in the general population remain largely elusive. Recent studies of disorder …