We compare the predictions of two different accounts of first language acquisition by investigating the relative contributions of abstract syntax and input frequency to the elicited production of main and embedded questions by 36 monolingual English-speaking toddlers aged 3;00 to 5;11. In particular, we investigate whether children's accuracy…

Research Findings: To extend findings that are mainly based on North American studies with English speakers, we studied 989 Chilean mothers from households of low socioeconomic status and their prekindergarten children, posing 2 questions: (a) Do mothers' self-reported practices about literacy development predict early literacy outcomes over and…

Delays in language acquisition can have serious deleterious effects on the education and social development of children. A number of related language intervention procedures have been developed for use in natural settings. These procedures include incidental teaching, modeling, manding, time-delay, and milieu language teaching. The present paper…