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Table 1 WISC-III subtests and abilities measured

From: A solution to limitations of cognitive testing in children with intellectual disabilities: the case of fragile X syndrome

Subtest Abilities
Verbal  
 Information Range of knowledge, long term memory
 Similarities Abstract reasoning, concept formation
 Arithmetic Numerical reasoning and computation
 Vocabulary Word knowledge
 Comprehension Practical knowledge, social judgment
 Digit Span Auditory short-term memory
Performance  
 Picture Completion Visual perception, attention to detail
 Coding Visual–motor information processing
 Picture Arrangement Nonverbal reasoning and sequencing
 Block Design Spatial visualization and reasoning
 Object Assembly Visual perception and organization
 Symbol Search Scanning, matching, attention to detail