About the Measure

Domains Omnibus
Subscales Scales for reading spelling and maths
Target Construct Oral language: Sentence comprehension skills. Literacy: Word reading and decoding, spelling and reading (composite score of word reading and sentence comprehension) Numeracy : Counting, number identification, problem solving, arithmetic, algebra, geometry and (advanced) operations.
Description Measure the basic academic skills of reading, spelling and maths computation.
Test Authors Robertson, G. J. & Wilkinson, G. S.
Publisher Pearson (2006)

Implementation details

Respondent Child
Prior knowledge Required Requires qualified teaching status and a further Post Graduate Qualification in SEN, SpLD or a relevant field.
Scoring Transparent and clear criteria, Scoring requires care to establish norms
Time 15 to 25 minutes for children 5 to 7
Age 5 years to 94 years

Psychometric details

UK norms YES
Norm / Criterion referenced Norm referenced
Standardisation sample 3007
Reliability For all ages, the alternate form reliability coefficient is .88. The delayed testing coefficient is .84 (for all ages).
Criterion validity WRAT showed concurrent validity with WISC IV, WIAT II, WRAT expanded, KBIT, WRIT, WJ III.
Construct validity Described as acceptable
Concurrent validity Studies conducted for concurrent validity found low to moderate relationships between full-scale IQ and subtest scores, ranging from .57 (for spelling) and .72 (for reading).