This bibliographic review aims to present a single comprehensive source of references to facilitate clinical application of data obtained on the vocal activity of normal infants and to facilitate continued research on prelinguistic vocal output. The bibliography cites the published observational, empirical, and theoretical reports that examine the…

This longitudinal study assessed the narrative language development of primary grade children with slow expressive language development (SELD) as toddlers who either had or had not moved into the normal range of expressive language by early school age. Deficits in narrative skills tended to disappear in children with a history of SELD, though…

The study demonstrated that 36 male children (ages 7-10) with learning problems were characterized not by a restricted vocabulary as such (i.e., the variance common to both receptive and productive vocabulary measures) but by a hampered production of words (i.e., the variance common to both speed-of-naming and productive vocabulary measures.…

This study found that 30 children with reading disability (RD) performed more poorly than 30 children with normal reading achievement on tasks of serial rapid naming, verbal fluency, letter-based word retrieval, and articulatory speed. RD children had significantly longer reaction times and production durations on the serial naming task. Findings…

Two studies with nine children with severe traumatic brain injury (TBI) were conducted. Study 1, focusing on longitudinal changes in speaking rate, found markedly slower speaking rates for five subjects. Study 2, examining possible causes of slowed speaking rate, found that both reduced articulatory speed and increased pausing may contribute…

This study compared pragmatic skills of 5 children (ages 4-6) with specific language impairments (SLI) and their younger siblings matched for mean length of utterance. Analysis of communicative acts on three levels (social interchange, speech act, and conversational) indicated comparable performance within sibling pairs, but SLI children…

This study evaluated the relationship between the play behaviors of 18 deaf blind children (aged 3-12) and their communication skills using the Play Assessment Scale and several multidomain developmental checklists. Results revealed that behaviors observed during play assessment were highly related to ratings of receptive, expressive, and…

Two children (ages four and five) with word-finding deficits characterized largely by semantic substitutions participated in a treatment involving phonological information about target words. Treatment resulted in reduction not only of occasional phonological word-finding substitutions but also of the large number of semantic word-finding…

Forty-eight subjects (grades 1-12) with phonological disorders were identified and categorized into either Residual or Delayed groups and performance was compared with that of 24 normal individuals on various speech and language parameters. Results indicated that voice disorders, deficits in expressive language, and hearing problems occurred more…

This study, with 30 language learning-disabled, reading-disabled, and normal primary school children, found that clause structure complexity, fluency, and grammatical and phonemic accuracy tended to be highest when children were discussing absent referents, providing explanations and stories, and giving unshared information. These effects were…

This study compared the effect of productivity (a correlate of suffix frequency) on derivational suffix use in 69 elementary and middle school students' derivational suffix use. Twenty-three students had language-learning disabilities (LLD). Students with and without LLD used highly productive suffixes but LLD students were less accurate in…

This study of the forms and functions of expressive communication produced by 84 children and adults with severe mental retardation found significant differences among participants associated with differences in their communication levels (contact gesture, distal gesture, or symbolic), age (child or adult), and residential status (community home…

This study used longitudinal productivity criteria to establish the phonetic skill of 20 children (followed from 9 to 16 months). The number of specific consonants produced consistently across the months predicted referential lexical use at 16 months. Prior use of at least two supraglottal consonants characterized the children achieving…

Comparison of spontaneous language samples of 30 toddlers diagnosed with specific expressive language impairment (SLI) and language samples of typically developing toddlers found the SLI toddlers vocalized significantly less often, had proportionately smaller consonantal and vowel inventories, and used a more restricted and less mature array of…

Spoken language in 330 children with Down syndrome (ages 1-5) and 336 normally developing children (ages 1,2) was compared. Growth trends, individual variation, sex differences, and performance on vocabulary, pragmatic, and grammar scales as well as maximum length of utterance were explored. Three- and four-year-old Down syndrome children…