Psychometric & IQ Testing
Wechsler IQ Tests and Scales
2.5 years and above
Ψ Wechsler Preschool and Primary Scale of Intelligence (WPPSI)
Ψ Wechsler Intelligence Scale for Children (WISC)
Ψ Wechsler Intelligence Scale for Adults (WAIS)
Ψ Wechsler Abbreviated Scale of Intelligence (WASI-II)
Ψ Wechsler Individual Achievement Test (WIAT-III)
Other Intelligence/ Achievement
Tests and Scales
2 years and above
Ψ Comprehensive Test of Nonverbal Intelligence (CTONI-2)
Ψ Differential Ability Scales (DAS-II)
Ψ Stanford-Binet Intelligence Scales, Fifth Edition (SB-V)
Ψ Test of Nonverbal Intelligence Fourth Edition (TONI-4)
Ψ Wide Range Achievement Test (WRAT-4)
Developmental Assessments
1 ~ 42 months
Ψ Bayley Scales of Infant & Toddler Development (Bayley-III)
Tests for Developmental Sub-Domains
2 years and above
Ψ Beery-Buktenica Developmental Test of Visual-Motor Integration (BEERY VMI)
Ψ Comprehensive Test of Phonological Processing (CTOPP-2)
Ψ Phonological Assessment Battery (PhAB2)
Tests for Adaptive Skills & Behaviours
1 month and above
Ψ Adaptive Behaviour Assessment System (ABAS-3)
Ψ Behaviour Assessment System of Children (BASC-3)
Ψ Vineland Adaptive Behaviour Scales (Vineland-3)
Tests for Autism
12 months and above
Ψ Autism Diagnostic Observation Schedule (ADOS-2)
Ψ Social Responsiveness Scale (SRS-2)
Ψ Autism Diagnostic Interview-Revised (ADI-R)* (screening)
Tests for ADHD
6 years and above
Ψ Conners 3rd Edition
Wechsler Individual Achievement Test (WIAT-III)
Concerned about your child’s intellectual functioning in verbal, reading or mathematical abilities?
The WIAT-III is designed to assess an individual’s skills in these areas, and the test can be taken by adults or adolescents. There are 16 subtests, covering 8 domains. Oral language, total or basic reading, reading comprehension and fluency, written expression, mathematics and math fluency. Subtests in each domain will combine to give a standardised score for each domain.
Clients or the clinician can be flexible, choosing to administer only certain domains’ subtests that best reflect the relevant concerns. It isn’t a must to complete all 16 domains. If you’re concerned about reading abilities, it is fine if you do tests only in the domains of reading comprehension and fluency, basic reading and total reading.
The length of time taken to administer the test depends on the individual’s current education level, performance and the number of subtests administered.
Composite scores in specific domains can help identify strengths, weaknesses, or flag out possible learning disabilities in children. This can assist clinicians who are determining if a student has a learning disability or is eligible for special education services. It may also be useful for crafting instructional aids, objectives or interventions.
To allow for a more comprehensive understanding of your child’s intellectual and general functioning, we recommend using this scale alongside Weschler Cognitive Assessments such as WPPSI-IV and WISC-V as this can better aid your decision on what you can do to best support your child moving forward.
