Syntactic complexity, fluency, and accuracy of sentence imitation in adolescents.

The majority of work that suggests a relationship between syntactic complexity and the frequency of stuttering has been carried out with young children. In this paper, we investigate whether or not syntactic complexity exerts an influence on the frequency of stuttering in adolescent speech. Fourteen adolescents, 7 of whom stuttered, and 7 of whom were normally fluent, ages 10-18 years, participated in a sentence imitation task in which stimuli were divided into three classes of grammatical complexity. Results indicated that for both groups of speakers, normal disfluencies and errors in repetition accuracy increased as syntactic complexity increased. However, stuttering frequency did not appear to be affected by changes in the syntactic complexity of the target stimuli. Such findings suggest either a diminution of the effects of syntactic complexity on stuttering over the course of language acquisition or changes in the mix of chronic and nonchronic stuttering speakers from those used in earlier studies of the effects of linguistic structure on stuttering in children.

The psychophysiologic aspects of stress in juvenile diabetes mellitus.

Diabetes Mellitus is the most common endocrine disease found in children, and its reported incidence is increasing. Most investigators now agree that improved diabetic control is effective in decreasing both long and short term complications. The delineation of factors which affect control are, therefore, of importance. Classically, the physician has emphasized insulin dose, presence of infection, diet, and exercise. Emotional factors have long been thought to play a role in diabetes mellitus. The exact nature of this role, however, has been rather elusive and controversial. The authors review this literature, summarize the major viewpoints, and conclude that physiological factors can influence the physiology of the disease. The focus of this paper is the synthesis of recent advances in basic metabolic, endocrinologic, and stress research, relevant to juvenile diabetes, into a psychophysiologic model. The authors discuss future research directions necessary for clarification of the model, as well as its psychological and physiological therapeutic implications.