Features and Benefits

Wechsler Adult Intelligence Scale - Fourth UK Edition (WAIS-IV UK) - Features and Benefits

Clinical utility

Increased developmental appropriateness

  • More efficient administration time
  • Added teaching items to ensure understanding of task
  • Reduced vocabulary-level for verbatim instructions
  • Reduced emphasis on motor demands and timed performance
  • Enlarged visual stimuli

Enhanced user friendliness

  • Reduced testing time by an average of 15%
  • Revised instructions for clarity and consistency
  • Redesigned record form
  • Increased portability
  • Expanded sample responses
  • Simplified technical manual organization
  • Included new clinically sensitive supplemental subtests

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Improved Psychometric Properties

  • Updated norms
  • Improved floors and ceilings
  • Expanded FSIQ range
  • Improved subtest and composite reliability
  • Reduced item bias

Updated structural foundations

  • Transitioned from dual IQ to Index Score structure
    • Consistency with WPPSI-III and WISC-IV
    • Fewer Subtests yield FSIQ and 4 Index Scores (VCI, PRI, WMI, & PSI)
  • New measure of fluid intelligence
    • Developed new subtest to measure fluid reasoning (Visual Puzzles and Figure Weights)
  • Enhanced measures of working memory
    • Revise arithmetic to emphasize WM
    • Revise digit span to emphasize WM (added Digit Sequencing)
    • Retain auditory WM measures on WAIS, visuo-spatial WM Measures on WMS
  • Improved measure of processing speed
    • Reduce fine motor demands
    • Included an additional supplemental subtest (Cancellation)

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What do you think?