Functional neural circuits that underlie developmental stuttering.

The aim of this study was to identify differences in functional and effective brain connectivity between persons who stutter (PWS) and typically developing (TD) fluent speakers, and to assess whether those differences can serve as biomarkers to distinguish PWS from TD controls. We acquired resting-state functional magnetic resonance imaging data in 44 PWS and 50 TD controls. We then used Independent Component Analysis (ICA) together with Hierarchical Partner Matching (HPM) to identify networks of robust, functionally connected brain regions that were highly reproducible across participants, and we assessed whether connectivity differed significantly across diagnostic groups.

Origin and Pawn scaling for adults who do and do not stutter: A preliminary comparison.

Purpose: In order to determine whether adults who stutter (AWS) would show changes in locus of causality during stuttering treatment and approximate those of adults who do not stutter (AWNS) this preliminary study compared the locus of causality as indicated by Origin and Pawn scaling procedures from two groups of young adults who do and do not stutter.

Method: A total of 20 age- and gender-matched undergraduate and graduate students who did (n = 10) and did not (n = 10) stutter participated. The AWS took part in a three week intensive stuttering treatment provided by the American Institute for Stuttering (AIS).

A functional imaging study of self-regulatory capacities in persons who stutter.

Developmental stuttering is a disorder of speech fluency with an unknown pathogenesis. The similarity of its phenotype and natural history with other childhood neuropsychiatric disorders of frontostriatal pathology suggests that stuttering may have a closely related pathogenesis. We investigated in this study the potential involvement of frontostriatal circuits in developmental stuttering.

Behavioral stuttering interventions for children and adolescents: a systematic review and meta-analysis.

Purpose: To evaluate the effectiveness of behavioral interventions designed to treat stuttering in children.

Method: Studies were included for review if (a) the treatment was a behavioral intervention, (b) participants were between 2 and 18 years old, (c) the design was an experimental or quasi-experimental group design, and (d) the reported outcome measure assessed stuttering. An electronic search of 8 databases yielded a total of 9 studies, representing 327 treated participants across 7 different intervention types.

Documenting changes in adult speakers' locus of causality during stuttering treatment using Origin and Pawn scaling.

Unlabelled: The concepts of locus of control and locus of causality are similar and refer to the degree to which a person perceives daily occurrences to be a consequence of his or her own behavior. Locus of control is considered to be a unidimensional construct indicating an inverse relationship between the polls of internality and externality. The locus of control is generally determined by using questionnaires with a limited number of items.