Characteristics of Idiopathic Familial Speech Disorders
Completed
Conditions studied: Developmental Articulation Disorder, Speech Disorder, Stuttering
In brief
According to studies, speech disorders with unknown causes (idiopathic) affect approximately 5% of the population at some point in their life. Some of these disorders like, stuttering and cluttering, are known for being detected early, during speech development. Stuttering is characterized by sound and syllable repetitions and consonant/vowel prolongations. When stuttering is moderate to severe, it can interfere with a person's job and social activities. Speech articulation disorders are characterized by omissions, or substitutions of speech sounds. The speech of a person who clutters is often difficult to understand. People are often unaware of the errors they make when speaking causing treatment of the condition to be very difficult. The purpose of this research is to study an extended family whose members exhibit a pure form of speech articulation disorders In addition, the study will use data and information gathered from the study and use it to develop guidelines (criteria) for defining and differentiating patients with speech disorders.
Key facts
- Study ID
- NCT00001551
- Run by
- National Institute of Neurological Disorders and Stroke (NINDS)
- People needed
- 375
- Starts
- 1996-05-22
- Last updated by the study team
- 2017-07-02
Who can join
Age: any. Sex: any. Healthy volunteers: accepted.
You may not qualify if…
- i. Anyone with a hearing loss will be excluded from participation during the diagnostic testing.
- ii. Children with delayed language, more than 1 year delay from norms on receptive and expression language testing will be excluded.
- iii. Language impairment: scores more than 2 standard deviations below the age appropriate score on the standardized language tests listed under the inclusion criteria.
- iv. Cognitive impairment: scores more than 2 standard deviations below the age appropriate score on the standardized cognitive tests listed under the inclusion criteria.
- v. Bilingual non-native English speakers - Studies have demonstrated that brain organization for speech and language may differ in bilingual persons. It is hypothesized that this may alter speech motor learning and thus kinematic data from non-native English speakers would differ from native English speakers. Therefore, only native-American English speakers, with only one language spoken in the home, will be included.
Where it is running
- University of Maryland, College Park — College Park, Maryland, United States
- University of Wisconsin — Madison, Wisconsin, United States
Full record on ClinicalTrials.gov
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