Nine tasks were designed to test the developmental sequence of three types of "because" (affective, physical, concrete logical) in 100 children aged 3 to 7 years. The tasks tested whether comprehension of "because" preceded its usage and at what point children understood that sentences with reversed clauses were incorrect.…

Preschool children were tested on their comprehension of the comparatives, "taller,""shorter,""more," and "less" in five types of sentences. Results suggest that many children can understand two-dimensional comparisons, but perform poorly on second-clause subjects pronoun sentences because of uncertainty about the referent of the pronoun. (SDH)

Investigates the development and production of spatial deictic terms ("this/that", "here/there", "my/your") in the context of a hide-and-seek game using preschool children and college age adults. (Author/ED)

Sixteen children (aged 14 to 26 months), who were reported by their parents to overextend, were tested for overextension in both language production and comprehension. The children were first asked to name each of a series of pictures of inappropriate exemplars of the words they were reported to overextend. Those words that were overextended, a…

In order to investigate the development of word-formation abilities, 3-, 5-, and 7-year-olds were asked to act out with toys, judge, and make up sentences containing instances of class extension. Some sample sentences are "Can you upside-down the clown?" and "Broom the spoon." Children dealt with such sentences in much the same…

After discussing the differences in the physical, social, and attitudinal environments of advantaged and disadvantaged children, this paper describes the educational settings and intervention practices that were designed as part of the Carolina Abecedarian Project to assist young disadvantaged children in attaining educational competence. An…

The ability of children at different ages to distinguish instructions to "ask" from instructions to "tell" and the types of structures used to express these directives were studied. Subjects were 120 children, aged 2 years 6 months to 6 years 6 months. Children were instructed to either ask or tell an adult or another child to give them puzzle…

The purpose of this research was to develop methods to study the effects of context on children's comprehension and production of temporal terms such as "before,""after,""next,""then," and "but first." A longitudinal study, using naturalistic and traditional laboratory methods, and three…