: For the UK-specific version of the stimulus books and scoring keys. Pearson Clinical (Asia)
The structure of the WAIS-IV is built around four primary index scores that combine to produce the Full Scale IQ (FSIQ), which serves as a measure of general intellectual ability. The first index, Verbal Comprehension (VCI), measures a person's ability to access and apply acquired word knowledge through tasks like "Similarities" and "Vocabulary". The Perceptual Reasoning Index (PRI) assesses non-verbal fluid reasoning and visual-spatial processing using subtests like "Block Design" and "Matrix Reasoning". The Working Memory Index (WMI) evaluates the capacity to hold and manipulate information in short-term memory, often using "Digit Span" and "Arithmetic" tasks. Finally, the Processing Speed Index (PSI) measures the ability to process simple or routine visual information quickly and efficiently. Test Wais Iv
Traditionally administered face-to-face with paper and pencil, though digital options like Pearson Q-global are now available. : For the UK-specific version of the stimulus
Assesses the ability to temporarily store, transform, and manipulate information. Key Subtests: Digit Span, Arithmetic. Verbal Comprehension (VCI)
The PRI measures non-verbal and fluid reasoning. It assesses the ability to solve novel problems independent of language.
: It is used to assess the impact of traumatic brain injuries or neurological conditions on an individual's daily functioning, such as an accountant struggling with deadlines after a head injury.
Evaluating brain functioning following injury or trauma.