Understanding the Woodcock-Johnson IV (WJ-IV) Assessment

What is the WJ-IV?

• A comprehensive, standardised assessment used to measure cognitive abilities, academic achievement, and processing strengths/weaknesses.
• Suitable for ages 2 to 90+.
• Widely used by psychologists, SEND professionals, and educators.

What does it assess?

• Tests of Cognitive Abilities: working memory, processing speed, verbal comprehension, visual-spatial thinking, auditory processing.
• Tests of Achievement: reading, writing, maths, spelling, academic fluency.
• Tests of Oral Language: listening comprehension, expressive vocabulary, oral fluency.

What does it assess?

• Tests of Cognitive Abilities: working memory, processing speed, verbal comprehension, visual-spatial thinking, auditory processing.
• Tests of Achievement: reading, writing, maths, spelling, academic fluency.
• Tests of Oral Language: listening comprehension, expressive vocabulary, oral fluency.

Why is it useful?

• Identifies specific learning difficulties (e.g., dyslexia, dyscalculia).
• Highlights cognitive processing strengths and weaknesses.
• Shows discrepancies between ability and attainment.
• Supports EHCPs, exam access arrangements, and specialist referrals.
• Informs intervention planning and support strategies.

How is it delivered?

• One-to-one session with a qualified assessor.
• Calm, supportive environment.
• Flexible structure tailored to age and need.
• Typically 90–120 minutes.
• Clear written report provided afterwards.

What happens next?

• Summary of findings.
• Visual profile of strengths and needs.
• Practical recommendations for home and school.
• Guidance on next steps and support options.