: For the UK-specific version of the stimulus books and scoring keys. Pearson Clinical (Asia)
The Wechsler Adult Intelligence Scale, Fourth Edition (WAIS-IV) is the primary clinical instrument used to measure the cognitive abilities of individuals aged 16 to 90. It provides a comprehensive profile of an individual's intellectual strengths and weaknesses. Test Structure & Scoring Test Wais Iv
| Test | Age Range | Key Difference | |------|-----------|----------------| | | 16:0 – 90:11 | Gold standard for adults | | WISC‑V | 6:0 – 16:11 | Children’s version, similar structure | | Stanford‑Binet 5 | 2 – 85+ | Includes non‑verbal routing, broader age range | | KBIT‑2 | 4 – 90 | Brief screener (15–20 minutes) | : For the UK-specific version of the stimulus
The PRI measures non-verbal and fluid reasoning. It assesses the ability to solve novel problems independent of language. Test Structure & Scoring | Test | Age
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