Immediate and extended families of 66 stuttering children were investigated to determine frequencies of persistent and recovered stuttering. Recovery was far more common among females than males. Recovery or persistence was found to be transmitted, but the two types are not genetically independent, consistent with hypothesis that both forms share…

Analysis of pedigrees from parents of 69 preschool children who stuttered revealed that more male than female relatives ever stuttered but that female subjects who stuttered had more female relatives who ever stuttered than did male subjects. Segregation analyses suggest that transmission of a single major genetic locus increases the liability to…

Data on the onset of stuttering in 22 children two and three years of age were obtained through systematic parent interviews using a coded questionnaire. All children were reported to have begun stuttering prior to 36 months of age. (Author)

Research has linked delayed auditory feedback and stuttering to several physiological factors. A review of familial relationship, age, sex, stress, speech characteristics, and sound conduction is presented. A brief integration of the factors and directions for research is presented. (Author/PN)

Multivariate analyses revealed that dysfluency did not vary as a function of race, social status background, or sex. In addition, the relative contribution of specific types of dysfluency to total dysfluency was virtually identical in each sociocultural group. (Author/DLS)

Telephone interviews with families (n=4,689) in New South Wales, Australia, found the prevalence of stuttering in the overall population was 0.72% with highest rates in children (1.4) and lowest in adolescents (0.53%). Male to female ratios were 2.3:1 overall. Incidence estimates ranged from 2.1% in adults to 3.4% in older children. The…

Interviews with parents of 87 preschool children within a year of a stuttering diagnosis found that onset tended to occur earlier than was previously thought and was sudden and/or severe in many cases; about twice as many boys as girls stuttered; and there was a positive relationship between severe stuttering and sudden onset. (DB)

A survey of 1,184 speech language pathologists found that of 2,628 children (grades 1-12) who stuttered, 62.6% had other concurring speech disorders, language disorders, or non-speech-language disorders. Articulation disorders (33.5%) and phonology disorders (12.7%) were the most frequently reported. Males were more likely to exhibit co-occurring…

Forty stutterers and forty nonstutterers in Japan were tested for susceptibility to delayed auditory feedback while reading passages under amplified delay conditions. Susceptibility was higher for stutterers than nonstutterers and for nonstuttering men than nonstuttering women. Stutterers appeared to rely on auditory feedback for speech control…

This study of 20 stuttering and 20 nonstuttering preschool children found that stuttering children scored lower on 7 out of 8 language measures, with no significant intergroup differences on articulation proficiency or fluency. There were few significant correlations between measures of stuttering rate, speaking rate, and language performance…

Following a literature review on speech and language development of twins, case studies are presented of six sets of identical twins screened for entrance into kindergarten. Five sets of the twins and one boy from the sixth set failed to pass the screening test, particularly the speech and language section, and were referred for therapy to correct…

Designed for parents of children who stutter, the booklet is intended to help alleviate fears and give suggestions in planning a treatment program (when necessary). Stuttering is the popular term for fluency problems involving repeating or prolonging an unusual number of sounds or hesitating for an abnormally long period of time between sounds.…