Although high-quality early educational environments are thought to be related to the growth of children's skills in mathematics, relatively little is known about specific aspects of classroom instruction that may promote these abilities. Data from a longitudinal investigation were used to investigate associations between teachers' language while…

The institutional machine of contemporary activity theory currently appears to be constrained by centring on the structure of mediated activity first voiced by Vygotsky. As a centring, such a principle, it is argued, continually restores the equilibrium of the institutional machine in alignment with its possible development in the polysemy of…

The ability of nursery school children to associate pairs of toys was assessed under four experimental conditions: (1) control, (2) subjects manipulating the toys, (3) subjects generating a sentence, and (4) subjects generating a sentence while manipulating the toys. All three subject-involvement conditions produced significantly better…

Preschool children were given a memory task that required repeating a list of animal names and a sentence imitation task. Results confirmed a relationship between word span and language imitation in younger preschool children and the notion of a memory constraint on early spontaneous language. Increasing mastery of linguistic rules appeared to…