Validation of the Manchester spoken language development scale (MSLDS).

Area of Science:

• Audiology
• Speech-Language Pathology
• Developmental Pediatrics

Background:

• Accurate monitoring of language development is crucial for pre-lingually deaf children with auditory implants.
• Existing outcome measures are often time-consuming, hindering regular assessment.
• The Manchester Spoken Language Development Scale (MSLDS) was created as a brief, practical interim measure.

Purpose of the Study:

• To describe the MSLDS.
• To evaluate the ease of use and inter-rater reliability of the MSLDS.
• To assess the applicability of the MSLDS in the pediatric auditory implant population.

Main Methods:

• Sixteen speech therapists and teachers of the deaf reviewed videos of pediatric cochlear implant assessments.
• Twenty-five videos from fourteen children were rated using the MSLDS by three independent reviewers.
• Reviewers provided qualitative feedback on the scale's usability.

Main Results:

• High consistency was observed between raters, with an intra-class correlation coefficient (ICC) of 0.987.
• Perfect agreement was achieved in 32% of videos, and a one-point difference in 60%.
• Qualitative feedback led to further modifications of the MSLDS.

Conclusions:

• The MSLDS demonstrates high inter-rater agreement, indicating its potential as a reliable monitoring tool.
• The scale provides a streamlined overview of expressive language development.
• The MSLDS is a practical solution for frequent language assessment in pediatric auditory implant users.