---
title: Age-related Correlates of Treatment for Late-acquired Sounds
nct_id: NCT03663972
overall_status: COMPLETED
phase: NA
sponsor: University of Wyoming
study_type: INTERVENTIONAL
primary_condition: Speech Sound Disorder
countries: United States
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT03663972.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT03663972"
ct_last_update_post_date: 2020-06-18
last_seen_at: "2026-05-12T07:12:44.885Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Age-related Correlates of Treatment for Late-acquired Sounds

**Official Title:** Age-related Correlates of Treatment Efficacy and Efficiency for Late-acquired Sounds

**NCT ID:** [NCT03663972](https://clinicaltrials.gov/study/NCT03663972)

## Key Facts

- **Status:** COMPLETED
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 16
- **Lead Sponsor:** University of Wyoming
- **Conditions:** Speech Sound Disorder, Phonology Disorder, Phonology Impairment, Phonological Disorder, Articulation Disorders in Children, Developmental Phonological Disorder, Speech Disorders, Speech Delay, Articulation Disorders, Developmental
- **Start Date:** 2018-06-11
- **Completion Date:** 2020-04-30
- **CT.gov Last Update:** 2020-06-18

## Brief Summary

Late-acquired sounds, such as /r/ are difficult to learn and many children experience persistent errors on these sounds. The purpose of the present study is to determine whether treating these sounds earlier in the child's life may result in better outcomes.

## Detailed Description

Late-acquired sounds, such as /r/ are difficult to learn and many children experience persistent errors on these sounds. However, these sounds are often treated later in a child's life because they are not expected to be fully acquired until quite late--age 7-8 for some sounds. This practice places treatment in a time of the child's development in which they struggle to learn new sounds.The purpose of the present study is to determine whether treating these sounds earlier in the child's life may result in better outcomes, and to examine treatment efficacy and efficiency for two methods of treatment.

## Eligibility

- **Minimum age:** 4 Years
- **Maximum age:** 8 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusionary Criteria:

* Normal Hearing
* Typical Receptive Language
* Speech Sound Disorder
* No motor speech impairment
* Typical non-verbal intelligence
* Produces at least one late-acquired sound with \<7% accuracy
* Monolingual English-speaking
* Typical in terms of motoric and neurological development

Exclusionary Criteria:

* Neurological disorder
* Hearing loss
* Nonverbal IQ \< 16th percentile
```

## Arms

- **Motoric Arm** (ACTIVE_COMPARATOR) — Children will participate in an intervention based on traditional articulation approaches to speech therapy.
- **Phonologic Arm** (ACTIVE_COMPARATOR) — Children will receive intervention that targets the conceptual representation of sounds.

## Interventions

- **articulation therapy** (BEHAVIORAL) — children receive instruction in producing new sounds at the isolation, syllable and word level.
- **phonologic treatment** (BEHAVIORAL) — children receive instruction in producing new sounds at the word level

## Primary Outcomes

- **Treatment Efficacy: Number of correct productions of treated speech sounds in treatment words** _(time frame: baseline until accuracy criterion is met; up to 18 weeks after final baseline session)_ — Accurate Production of treatment sound at baseline and at posttest
- **Treatment Efficiency: Number of sessions required to meet accuracy criteria** _(time frame: baseline until accuracy criterion is met; up to 18 weeks after final baseline session)_ — Number of treatment sessions required to meet accuracy criteria (90% accuracy across three consecutive sessions or a maximum of 35 treatment sessions)
- **Session Length: Mean duration of sessions in minutes** _(time frame: First treatment session until final treatment session. Final treatment session occurs when accuracy of treatment sound is met (90% accuracy across three consecutive sessions or a maximum of 35 treatment sessions))_ — Start and end time of session is recorded on scoresheet, then number of minutes for each session for each participant is found and the mean across all sessions is calculated.

## Secondary Outcomes

- **Accuracy of production of untreated sounds measured on pretest and posttest probes** _(time frame: baseline and at posttest up to 18 weeks after final baseline session)_

## Locations (1)

- University of Wyoming, Laramie, Wyoming, United States

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of wyoming|laramie|wyoming|united states` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT03663972.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT03663972*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*