Woodcock–Johnson Tests of Cognitive Abilities (WJ IV)

Designed by Richard Woodcock and Mary E. Bonner Johnson , these tests are meant to be for people of all age groups, including children as young as two years.

In these tests, 7 mental capabilities are tested including:

1. Fluid intelligence: Quantitative Reasoning, Induction, General Sequential Reasoning
2. Spatial-visual intelligence: Mental rotation, Visualization, Spatial relations, Visual memory
3. Short term memory: Working Memory, Memory span
4. Auditory processing: Phonetic coding, Word fluency
5. Processing speed: Perceptual speed
6. Long term retrieval: Ideational Fluency, Associative memory
7. Crystallized intelligence: General Information, Listening Ability, Language Development & Lexical Knowledge