Speech Sound Disorder Clinical Trial
Official title:
Manipulating Linguistic Complexity to Improve Child Language Treatment Outcomes
Verified date | March 2023 |
Source | San Diego State University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Phonological disorder (PD) and specific language impairment (SLI) directly impact a child's ability to communicate and are among the most prevalent developmental disorders. The proposed experiments manipulate the complexity of treatment targets to identify the most efficacious treatment approaches for English- and Spanish-speaking children aged 3 to 6 years who present with these disorders. This research will reveal the nature of interactions between sound and structure in language for these children and will have significant implications for a unique approach to target selection when treating persistent phonological and grammatical difficulties in children with PD, SLI, or both.
Status | Completed |
Enrollment | 41 |
Est. completion date | December 31, 2021 |
Est. primary completion date | December 31, 2021 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 3 Years to 6 Years |
Eligibility | Participants will be recruited through announcements to schools and community organizations. Data will include caregiver-reported demographic data, scores on the standardized tests, digital recordings of subjects' spontaneous language, treatment probes and generalization probes, computerized analyses of speech/language samples and probes, and transcribed responses from speech/language samples and probes. All such data will be collected following caregiver consent and child assent. Further, all data will be collected at the SDSU clinic, with the exception of the caregiver report, which may be completed by the caregiver at home. Screening procedures will include administration of the following: - Caregiver report of child history and language background, binaural hearing screening, - Goldman-Fristoe Test of Articulation 3 (GFTA3; English) or Bilingual English-Spanish Assessment (BESA; Spanish), - Preschool Language Scales (PLS; English or Spanish), - Leiter-R, spontaneous language sample, and - Protocol for the Assessment of English Phonotactics (PEEP; English) or Assessment of Spanish Phonology (ASP; Spanish). Children who meet the inclusionary criteria below will be classified as having PD, SLI, or PD-SLI, per those criteria. INCLUSIONARY CRITERIA: All participating children must meet the following inclusionary criteria: - between the ages of 3 and 6 years of age; - speak Spanish (Experiment 1) or English (Experiments 2 and 3); - present with phonological disorder (PD, n = 22), specific language impairment (SLI, n = 6), or co-occurring PD-SLI (n = 18) (see below for additional criteria for inclusion). The research program will over-recruit at 60 children, to reach the desired 46 participants. Participants will complete a battery of assessment measures. Information gleaned from these measures will be used to further determine eligibility for the proposed study, which include both quantitative and qualitative criteria. Specifically, all PD (Experiments 1 and 2) and PD-SLI (Experiment 2 and 3) participants must: - exhibit 5 or more sounds in error across three or more speech sound manner classes; - score = 1.5 standard deviations below the mean on the GFTA3, if English-speaking; - score = 1.5 standard deviations below the mean on the Phonology subtest of the BESA, if Spanish-speaking; and - exhibit = 20% accuracy on consonants and clusters independent of tense morphemes. Moreover, all SLI (Experiment 3) and PD-SLI (Experiments 2 and 3) participants must: - score = 1 standard deviation below the mean on the Preschool Language Scales (PLS), a test of expressive and receptive language; and - exhibit a mean length of utterance (MLU) = 1 standard deviation below the mean for age- and demographic-matched peers, based on a language sample. EXCLUSIONARY CRITERIA: All participants (Experiments 1, 2, and 3) must: - not be receiving speech/language services elsewhere; - pass a binaural hearing screening at 20 decibels; - achieve score above a standard score of 70 on a test of nonverbal cognition (Leiter-R); and - have typical intellectual, hearing, social-emotional, and neurological development, per parent report. In addition, to rule out concomitant difficulty in other domains of language all PD participants (Experiments 1 and 2) must: - score > 1 standard deviation below the mean on the PLS, if English-speaking; - have an MLU > 1 standard deviation below the mean for age- and demographic-matched peers, based on a language sample. To rule out concomitant difficulty in phonology, the SLI participants (Experiment 3) must: - score > 1.5 standard deviations below the mean on the GFTA3; and - exhibit fewer than 5 sounds in error and > 20% accuracy on final consonants and clusters independent of tense morphemes. If the above criteria are not met, a child will be excluded from participation. |
Country | Name | City | State |
---|---|---|---|
United States | San Diego State University Speech-Language Clinic | San Diego | California |
Lead Sponsor | Collaborator |
---|---|
San Diego State University | National Institute on Deafness and Other Communication Disorders (NIDCD) |
United States,
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* Note: There are 20 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Treatment Probe Accuracy Change | The Treatment Probe is made of the selected treatment stimuli (words) that are consistent with the child's assigned experimental condition, and evaluates production accuracy of the treatment target within the verb stimuli. The treatment targets in these words have a consonant singleton or consonant cluster ("tee" vs. "tree", "sees" vs. "seats"), and are mono- or bi-morphemic contexts ("tease" vs. "sees"). Children are asked to pronounce each word following presentation of a corresponding picture and a verbal prompt. The Treatment Probe allows us to track the effectiveness of treatment on the target consonant or consonant cluster in the treated stimuli. Accuracy of the consonant or consonant cluster is binary, as 'incorrect' (e.g., "tee" for target "tree") or 'correct' (e.g., "tree" for target "tree"). | Change in percentage of consonant or consonant cluster accuracy (depending on Arm/Group) from first treatment session to final treatment session; up to 6 weeks. | |
Primary | Generalization Probe Accuracy Change | The Generalization Probe consists of words and phrases that target each consonant, cluster, and morpho-syntactic constructs a minimum of 10 times across relevant contexts (i.e., word- and utterance-position). The Generalization Probe allows us to track the effects of treatment (generalization) to untreated stimuli and to monitor control variables by measuring production accuracy of stimuli. The Generalization Probe samples each consonant and consonant cluster of the target language across multiple words and contexts. Children are asked to pronounce each word following presentation of a corresponding picture and a verbal prompt. Accuracy of the consonant or consonant cluster is binary, as 'incorrect' (e.g., "tee" for target "see") or 'correct' (e.g., "see" for target "see"). | Change in percent consonant accuracy from baseline to immediately following final treatment session; up to 6 weeks. |
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