The WAIS-IV is an individually administered intelligence test developed by David Wechsler and published by Pearson. Designed for individuals aged 16 to 90, it evaluates overall cognitive ability through a series of standardized subtests. The assessment takes between 60 to 90 minutes to complete. It shifts away from outdated views of fixed intelligence, focusing instead on how different cognitive systems interact. The Core Structure: The Four Cognitive Indexes
Capacity to hold and manipulate information in mind over short periods. Digit Span, Arithmetic Speed of mental processing and motor coordination. Symbol Search, Coding What to Expect During the Test
The WMI measures the capacity to temporarily store, manipulate, and transform information in immediate awareness. It is highly correlated with attention and concentration.
相较于前一版本（WAIS-III），WAIS-IV在设计理念、结构内容和临床效用上进行了深刻的革新：
The four index scores and the final FSIQ are scaled to a mean of and a standard deviation of Standard Score Classifications Test Wais Iv
Completing a logical sequence of visual patterns.
Evaluates the ability to temporarily hold, manipulate, and look up information. Core subtests include Digit Span and Arithmetic .
It excludes emotional intelligence (EQ), creative thinking, artistic talent, and musical aptitude. Summary of Key Facts
The WMI measures the ability to hold information in short-term memory and manipulate it to perform a cognitive task. It shifts away from outdated views of fixed
This index measures fluid intelligence—the ability to solve novel problems, visualize spatial relationships, and process non-verbal information.
Rote memory, sequencing, and mental manipulation (repeating numbers forward, backward, and in ordered sequence).
WAIS-IV必须由经过严格培训并具备相应认证资质的心理学专业人士（通常为持证心理测评师或临床心理学家）进行一对一个别施测。
The WAIS-IV is based on the Cattell-Horn-Carroll (CHC) theory of fluid and crystallized intelligence, integrating both into its design. It consists of 15 core subtests that yield an overall IQ score, as well as four index scores: Verbal Comprehension Index (VCI), Perceptual Reasoning Index (PRI), Working Memory Index (WMI), and Processing Speed Index (PSI). These indices provide a more nuanced view of an individual's cognitive strengths and weaknesses. Symbol Search, Coding What to Expect During the
Measures the speed and accuracy of visual scanning and mental processing.
The WAIS-IV remains the definitive benchmark for adult cognitive assessment. By breaking down intelligence into specific verbal, perceptual, memory, and speed metrics, it offers an empirical, deeply nuanced look into human cognition.
Assesses fluid reasoning, spatial processing, and visual-motor integration.