stammering stuttering stuttering
Conditions
Interventions
None listed
Sponsors
Erasmus MC, Universitair Medisch Centrum Rotterdam
Eligibility
Age
2 Years to 11 Years
Inclusion criteria
Inclusion criteria: Eligible participants are children: - aged 3;6-5;6 years or aged 7;6-10;0 years - who stutter with a stuttering severity rating of at least a 2 (mild stuttering) on an 8-point scale judged by the parents and by the therapist A group of recovered 7;6-10;0-year old children will be included as well. Recovered participants can be included when: - stuttering was diagnosed by a speech pathologist and has been present for at least 6 months. - stuttering is absent for at least 18 months at time of inclusion A group of control children can be included: - aged 3;6-5;6 years or aged 7;6-10;0 years - who do not stutter and have never stuttered.
Exclusion criteria
Exclusion criteria: Exclusion criteria are: - a diagnosis of an emotional, behavioral, learning or neurological disorder - a lack of proficiency in Dutch for children. - a hearing disorder with insufficient access to spoken language, judged by audiologist
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome measure of this study is the the envelope-based spatial temporal index (ESTI -. on a continuous scale), an acoustic outcome measure that has been recently described by the Oral Dynamics lab, University of Toronto (15). ESTI measures the spatial and temporal variability of 5 repetitions of one single target word. A total, mean ESTI score for the total set of probe words will be calculated. Firstly, the total ESTI score will be related to two perceptual SMS judgements: a.) total score of Oral Motor Assessment Scale - OMAS (12) and b.) % stuttered syllables in a sample of 300-500 syllables of spontaneous speech. Secondly, ESTI will be used to discriminate between the five participant groups. Furthermore, scripts to automatically measure ESTI will be written in Praat, (2) - open source software specifically developed for the acoustic analysis of speech. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary outcomes will be: 1. The lip aperture variability index score, indicating the maximum movement range between the upper and lower lip, analyzed using open source opto-track software, OpenMoCap (1). The lip aperture variability index will be used as a physiologically control variable for adaptations in speech movements, such as bigger movements in more complex target words. 2. Difference-scores between sub-scores of ESTI for different levels of complexity of the probe words. For easy and difficult probe words on a.) the motor level and b.) the cognitive-linguistic level ESTI scores will be calculated and a difference-ESTI will be calculated. These difference-ESTI scores will be used to compare participant groups as well. | — |
Countries
Netherlands
Contacts
Public ContactL.W. Stipdonk
Erasmus MC, Universitair Medisch Centrum Rotterdam
Outcome results
None listed