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1.
Child Adolesc Ment Health ; 23(3): 164-168, 2018 Sep.
Article in English | MEDLINE | ID: mdl-32677292

ABSTRACT

BACKGROUND: The Sheffield Learning Disabilities Outcome Measure (SLDOM) is routinely used across clinical services in the UK, despite not yet showing evidence of psychometric reliability or validity. However, it is reported that the SLDOM demonstrates good face validity, and represents a valuable tool for providing useful information around the parent-child relationship in the context of having a child with a Learning Disability (LD). METHOD: This study involved 263 parents or carers of a child with LD who completed the SLDOM. Data from this study were subjected to factor analysis. RESULTS: These findings suggest that the SLDOM could be viewed as a tool that measures two concepts: (1) internal factors central to the parent/carer in relation to having a child with LD and (2) external factors in terms of the context and environment surrounding a child with LD. To our knowledge, this study is one of the first to investigate the psychometric properties of the SLDOM. CONCLUSIONS: This has implications in terms of building evidence to support the clinical and research use of this tool; to provide evidence-based clinical services, and overall, to gain a better understanding of patients and their families, which will allow for optimum service provision.

2.
Res Dev Disabil ; 32(3): 1081-5, 2011.
Article in English | MEDLINE | ID: mdl-21296555

ABSTRACT

Intellectual assessment is central to the process of diagnosing an intellectual disability and the assessment process needs to be valid and reliable. One fundamental aspect of validity is that of measurement invariance, i.e. that the assessment measures the same thing in different populations. There are reasons to believe that measurement invariance of the Wechsler scales may not hold for people with an intellectual disability. Many of the issues which may influence factorial invariance are common to all versions of the scales. The present study, therefore, explored the factorial validity of the WAIS-III as used with people with an intellectual disability. Confirmatory factor analysis was used to assess goodness of fit of the proposed four factor model using 13 and 11 subtests. None of the indices used suggested a good fit for the model, indicating a lack of factorial validity and suggesting a lack of measurement invariance of the assessment with people with an intellectual disability. Several explanations for this and implications for other intellectual assessments were discussed.


Subject(s)
Intellectual Disability/diagnosis , Neuropsychological Tests/standards , Wechsler Scales/standards , Adult , Data Interpretation, Statistical , Databases, Factual , Female , Humans , Male , Neuropsychological Tests/statistics & numerical data , Reproducibility of Results , Wechsler Scales/statistics & numerical data
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