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New%20Reynell%20Developmental%20Language%20Scale%20(NRDLS)
New%20Reynell%20Developmental%20Language%20Scale%20(NRDLS)
| Availability | |
| Classification |
Supplemental: Mitochondrial Disease (Mito)
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| Short Description of Instrument |
The New Reynell Developmental Language Scale (NRDLS) is an instrument used to identify speech and language delays and impairments in children ages 3 to 7.5 through play-based activities. The NRDLS also provides separate assessment of expressive and receptive language abilities.
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| Scoring and Psychometric Properties |
Scoring: The measure provides standard scores for both language production (expressive language) and language comprehension. Raw scores from each of these indices are totaled and converted to standard scores based on age-based normative samples.
Psychometric Properties: See Letts et al., 2014 for psychometric properties information.
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| Rationale/Justification |
Strengths/Weaknesses: The NRDLS is a widely used measure in the UK with a large standardization sample of children in the UK. The updated version included a "Multilingual Toolkit" which provides guidance for use in children for whom English is their second language.
Mitochondrial Disease-Specific: Recommended by Koene et. al., (2013) as an instrument assessing early language development that represents a robust outcome measure for children with mitochondrial disorders based on meta-analysis of the literature.
Strengths: The measure was normed on typically developing children starting at the age of 2 to provide ample room for assessment of 3-year-old children with delays in language development.
Weaknesses: Because the test was normed with English speakers in the UK, norms may not translate exactly to English speakers in North America or elsewhere in the world.
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| References |
Key Reference:
Letts C, Edwards S, Schaefer B, Sinka I. The New Reynell Developmental Language Scales: Descriptive account and illustrative case study. Child Lang Teach Ther. 2014;30(1):103-16.
Mitochondrial Disease-Specific Reference:
Koene S, Jansen M, Verhaak CM, De Vrueh RL, De Groot IJ, Smeitink JA. Towards the harmonization of outcome measures in children with mitochondrial disorders. Dev Med Child Neurol. 2013 Aug;55(8):698-706.
Additional References:
Edwards S, Fletcher P, Garman M, Hughes A, Letts C, Sinka I. (1997) The Reynell Developmental Language Scales: III (RDLS-III). London: NFER-NELSON.
Edwards S, Garman M, Hughes A, Letts C, Sinka I. Assessing the comprehension and production of language in young children: an account of the Reynell Developmental Language Scales III. Int J Lang Commun Disord. 1999 Apr-Jun;34(2):151-71.
Edwards S, Letts, C, Sinka I. 2011. The New Reynell Developmental Language Scales. London: GL-Assessment.
Letts C, Edwards S, Sinka I, Schaefer B, Gibbons W. Socio-economic status and language acquisition: children's performance on the new Reynell Developmental Language Scales. 2013 Mar-Apr;48(2):131-43.
Document last updated March 2024
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