PURPOSE To investigate the behavioral and social competency profiles of individuals who stutter and to compare them with persons who do not stutter, according to their parents; to correlate the behavioral and the social competence performances with the severity of stuttering. METHODS Sixty-four participants, aged 6 to 18 years, of both genders, were divided into two groups: the study group (S...

This study reports an activation likelihood estimation (ALE) meta-analysis of imaging studies of chronic developmental stuttering in adults. Two parallel meta-analyses were carried out: (1) stuttered production in the stutterers; (2) fluent production in the control subjects. The control subjects' data replicated previous analyses of single-word reading, identifying activation in primary motor ...

To the Editor:-Pedigree or family studies of stuttering have shown increased risks among relatives, but they have not distinguished between the importance of genetic and shared environmental influences. Twin studies that are free of ascertainment bias can distinguish between these causes, but previous twin studies on clinical samples have properly not sought to distinguish. We report data from ...

Although the cause of stuttering is unknown, there is strong evidence for it being a neuromotor disorder characterised by an abnormality of higher control encompassing not only speech but other motor systems. The aim of this exploratory study was to look for the presence of non-speech/language deficits--in particular, visuomotor and visuoperceptual deficits--in persons who stutter. Twelve moder...

Stuttering is a complex behavioral disorder. Previously, vague and unreliable terminology for classifying stuttering behaviors has limited progress in delineating this intricate disorder. However, with the introduction of the Lidcombe Behavioral Data Language (LBDL) taxonomy, objective terminology has greatly improved reliability and the opportunity to examine stuttering behaviors across large ...

Motor balance in developmental stuttering (DS) was investigated with Transcranial Magnetic Stimulation (TMS), with the aim to define novel neural markers of persistent DS in adulthood. Eleven DS adult males were evaluated with TMS on tongue primary motor cortex, compared to 15 matched fluent speakers, in a "state" condition (i.e. stutterers vs. fluent speakers, no overt stuttering). Motor and s...