This study of the understanding of the words "and" and "or" in children, ages 2-7 1/2, indicates that "and" is used to express enumeration, and "or" to express alternatives, and that most children's responses are correct at age 4 and beyond. Differences between the linguistic and logical meaning of connection are discussed. (Author/LLK)

This study of language development was intended to chart the developmental course of the spontaneous use of negatives and affirmatives by 1 1/2 - 3-year-olds in response to true or false statements concerning familiar objects, properties, and actions. Forty children, 18, 24, 30, and 36 months of age, were assessed for knowledge of the words used…

A study was conducted to compare the relative performance on yes-no questions of bilingual and monolingual children and to discuss the relationship of semantic development and linguistic development, both in the bilinguals and monolinguals. Eighteen English monolingual, eighteen Japanese monolingual, and eighteen Japanese-English bilingual…

Most studies of language acquisition overlook the fact that a child learns language in the context of acquiring the social skill of conversing known as "turn-taking." The few studies of verbal turn-taking in children suggest that prosodic features (suprasegmentals) and turn-taking skills are integrated by the age of two years, nine months, and…

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…