Describes a study to determine: (1) the relationship between age and mean length of utterance measured in morphemes (MLU) in a group of normally developing two- and three-year-old chidren; (2) the standard error of MLU; (3) the relationship between MLU and age; and, (4) the ability of MLU to predict children's grammatical development. (SED)

Two studies were conducted, one to judge the relative ages of pairs of vocalizations from Chinese and American infants of varying ages, the other to judge the linguistic community of the vocalizer when age was held constant. Judgments were highly accurate in the first study, but not in the second. (Author/RM)

A study of the babbling and phonological development of 54 infants used half-hour videotape recordings of the children at play in their own homes. The vocal output was phonetically transcribed twice for interrater agreement, and analyzed for the consonants used five times or more in the child's vocal repertoire. These consonants were considered to…

Discourse and conversational analysis methods were used in a qualitative reconstruction of one aspect of the regularities in the way 61 children "do" personal reference. Of particular interest was the development of two reference forms: minimization--preference for simple (one word) forms, or recipient design--reference forms indicating…

A theoretical distinction is made between the growth of word meaning and the development of word sense in Vygotsky's terms. A recall from semantic memory task and the semantic differential were used to operationalize these two conceptions of meaning in a study of 72 children aged 5 to 10 years. Results replicated typical findings for the growth of…

Reports on data collected in nine age ranges from 18 months to 71 months that examined children's ability to understand emotion-descriptive adjectives when used by adults and their own use of these words in productive vocabulary. (HOD)

Examines children's variation in rate, style, and sequence of grammatical development, within and across natural languages. Using a sample of English and Italian infants, concludes that while there are structural differences between English and Italian that could affect the order in which nouns and verbs are acquired, no differences were observed…

This study examines ways in which children verbalize emotional experiences at successive age levels. Four groups of 16 boys and girls each drawn from the second, fourth, sixth, and eighth grades of a middle class private school in New York City were asked to describe happiness, sadness, love, anger, and fear. Raw protocols were scored according to…

The paper examines the nominal lexicon in later language acquisition as a window on linguistic knowledge and usage across childhood and adolescence. The paper presents a psycholinguistically motivated and cognitively grounded analysis of the distribution of ten semantic noun categories (the Noun Scale) across development, modality, and genre.…