By David Wechsler

Purpose: Provides a reliable assessment of reading, language and numerical attainment in one test.
Age: 4 to 25 years 11 months
Admin: Individual
Time: 45 to 90 minutes depending on the age of the examinee

Qualification Level:  B 

The WIAT-III-UK is suitable for use in a variety of educational, clinical and research settings. Clinician’s can use WIAT®-IIIUK results to:

Identify the academic strengths and weaknesses of a student  
Inform decisions regarding eligibility for educational services, educational placement, or diagnosis of a specific learning difficulty
Plan intervention
Measure progress
Features and Benefits

Subtests:

16 subtests to evaluate listening, speaking, reading, writing, and mathematics skills
3 new subtests - oral reading fluency, maths fluency and early reading skills
The following diagram shows all the WIAT-III-UK subtests, subtest components and composites (excluding the Total Achievement composite), and the links between them.

Eight composite scores:

Oral Language
Total Reading
Basic Reading
Reading Comprehension and Fluency
Written Expression
Mathematics
Maths Fluency
Total Achievement
Scores

Age-based standard scores  
Percentile ranks
NCE’s
Stanines age equivalents
Psychometric Information

The WIAT-III-UK was standardised on a fully stratified sample of 744 children and young people, based on the UK 2011 Census. The WIAT-III-UK will be correlated with the Wechsler achievement tests of comparable ages.

Updates to support EHCP, DSA and AA requirements, and best practice:

New UK norms from 4:0 - 25:11 years
Upwards extension of UK norms to 25:11 years
Standard scores for all subtests
Comparisons with Wechsler ability scores