A common metric for the Griffiths Scales.
The GQ and individual scales from the Griffiths Mental Development Scales (2-8 years) have differing means and standard deviations. They differ from the common standard among developmental tests. Direct comparisons between Griffiths subscale scores and between the Griffiths and other test scores are therefore prone to misinterpretation. A corrective formula for Griffiths scores is supplied with tables for popularly used ranges.
Lewisham Educational Psychology and Learning Support Service, Bromley, Kent, UK. john.ivens@lineone.net
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D002648:Child; D002657:Child Development; D002675:Child, Preschool; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis; D007361:Intelligence Tests; D009048:Motor Skills; D011594:Psychometrics; D012016:Reference Values