A study compared learning disabled (LD) adolescents with oral expressive problems to non-learning-disabled (NLD) adolescents on a formal operations task, with emphasis on a comparison between non-verbal performance and verbal explanations of the task. This paper reports part of the study, a comparison of two high school freshman subjects. The task…

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…

Fricatives and affricates in different word positions and initial fricative clusters were elicited from three linguistically deviant children (ages five years, two months to seven years) and one normal child (age two years, nine months) by means of pictures depicting familiar objects. Data from two of the older children and the normal child are…

Rates of verbalizing by three children exhibiting moderate to severe language delays (delays of six months to two years) were increased through the systematic use of mands for verbalization, models for verbalization, and contingent positive consequences following utterances. Daily samples of each child's speech were collected during free play…

The syndrome of childhood autism is typified by major abnormalities in language development, yet there are few systematic descriptions of autistic children's linguistic systems. This paper represents the beginning of a comprehensive investigation of the language of verbal autistic children and concentrates on comparing the syntax used by ten…

The proceedings of this Georgetown University Round Table on developmental psycholinguistics are divided into four sections: (1) "Children's Language Acquisition: Linguistic and Psycholinguistic Theory"; (2) "Children's Language Acquisition and Communicative Disorders"; (3) "Developmental Psycholinguistics and Second…

This paper describes the linguistic development of two hearing sons of deaf parents. Both were exposed to an early language environment different from that of the average hearing child. At the start of the study, the boys were aged 3 years, 9 months, and 1 year, 8 months, respectively. When first observed, the older child performed well below age…

This investigation studied the performance of fifteen normal and fifteen language-disabled children on experimental pragmatic tasks and on a standardized Piagetian measure of sensorimotor intelligence. The children were matched for mean length of utterance, all subjects performing at the holophrastic level. A series of experimental measures was…

This is the second report of a longitudinal project, initiated in 1970, in which children with and without language problems are identified in French immersion and English kindergartens and closely monitored to the end of grade 3. This study investigates the desirability of early French immersion program for English-speaking children with language…