Purpose: Our purpose was to test the competing sources of input (CSI) hypothesis by evaluating an intervention based on its principles. This hypothesis proposes that children's use of main verbs without tense is the result of their treating certain sentence types in the input (e.g., "Was 'she laughing'?") as models for declaratives…

Spontaneous speech samples from 10 Swedish children were analyzed grammatically. The five subjects (age five) with specific language impairment (SLI) differed from controls in their more restricted usage of word order patterns and number of grammatical errors. Their speech also showed frequent omissions of grammatical morphemes. Results suggest…

Preschoolers with specific language impairment (SLIs) and two groups of linguistically normally developing children described motion and change-of-state scenes while viewing a video, and patterns of verb use were analyzed. Although SLIs relied heavily on general all-purpose verbs, normally developing children used them more. SLIs made more verb…

Children with specific language impairments (eight learning Italian, eight learning English as a first language) were studied for grammatical deficits. Italian-speakers used noun inflections, verb inflections, copula forms more than English-speaking counterparts, matched by utterance length. Articles were used similarly. Results were consistent…

This volume provides a comprehensive overview of the major areas of research in the field of child language acquisition. It is divided into seven parts and 19 chapters. Part I is an introduction and overview. Part II covers central issues in the study of child language acquisition, focusing on syntax, including those of innateness, maturation, and…