The study summarized in this paper deals with the grammatical analysis of the spontaneous speech of approximately 150 children who are classified as mentally disabled; educable (I.Q. range 50-80). The performance of these mentally disadvantaged children is compared with the performance of 200 normally developing children by using a clinical…

Visual and verbal literacy skills are crucial to children because of their relationship to reading, and to adults because of their social utility. Such skills are, paradoxically, among those least often developed in a systematic fashion in elementary schools. One reason for this is that component subskills of visual and verbal literacy are…

This paper describes a study which examined the performance of 48 pairs of 18-month-old twins on the Mental Development Scale of the Bayley Scales of Infant Development to determine whether score differences would be found for the three subgroups of identical, fraternal same-sexed, and fraternal opposite-sexed twins. Of the 96 subjects, 46 (23…

This panel discussion seeks to determine the role of babbling and of nonlinguistic behavior in language acquisition. A central question is whether there is a continuity between babbling and speech. The paper presents the views that: the infant's ability to assimilate and adapt to his environment antedates the maturation of his visual and auditory…

This paper suggests that the main reason for the failure of many children to learn to read may be that reading programs often require the child to begin reading before he has developed oral language skills. By 3 years of age the child has acquired almost all the linguistic rules needed to produce basic, or kernel, sentences, which consist of…

This paper represents an effort to explain the language development of the child within the analytic frame of overtly observable data and without recourse either to mathematical models or to postulating hypothetical underlying forms. From longitudinal studies of two-year old children conducted by the author as well as from similar data reported in…

The Speech and Language Development Project, funded under ESEA Title I, was designed to improve the verbal skills of economically disadvantaged children in the primary grades in the Milwaukee public schools, and was later expanded to include older (7-13) educable mentally handicapped youth. The 325 participants worked regularly with six speech…

This investigation studied (1) the acquisition and proportion of correct usage of consonants of Japanese and American children, (2) the consonant substitutions of children developing normal language and of children with articulation problems, and (3) confusion in adults' recall of consonants. A system of distinctive features (gravity, diffuseness,…

Children in kindergarten, third grade, and fifth grade were presented a list of either pictures or words (with items presented varying numbers of times on the study trail). In both picture and word conditions, half of the subjects estimated how many times each item had been presented (absolute judgments) and the other half judged which of two…

This paper deals with three areas concerning early vocal development: (1) review and critique of existing experimental evidence suggesting that early vocal behavior has the properties of an operant response, (2) speculations concerning the role of non-verbal vocal behavior in early psychological development, and (3) suggestions for future…

Phonological development in children is described in terms of four stages; (1) preverbal vocalization and perception (birth to 1;0); (2) phonology of the first 50 words (1;0 to 1;6); (3) phonology of simple morphemes (1;6 to 4;0); and (4) completion of the phonetic inventory (4;0 to 7;0). (CTM)

An epidemiological study of 205 children (3-4 years old) showed there to be a marked association between behavior problems and language delay. (Author)

Developmental aspects of several temporal parameters in the speech of 2- to 4-year-old English-speaking children were investigated; adults served as a control group. Children seemed to possess timing control systems which are more sophisticated than has previously been suggested. (Author/SW)

Face-to-face communication makes up only a small proportion of an infant's diurnal transactions with his environment, but it is viewed as crucial to his total development. Research was conducted in which adult and infant behaviors were videotaped, and their interactions were analyzed. (Author/HP)

How a child answers questions provides information about how he or she processes input. A child's early responses to questions at age one year, three months, were compared to her responses at one year, seven months, when she was in the two-word stage. (SW)