Which instrument is a standardized test commonly used to assess cognitive function in traumatic brain injury rehabilitation?

• A. Wisconsin Card Sorting Test
• B. CRS-R for consciousness
• C. Trail Making Test
• D. WAIS

Answer: (D)

Standardized cognitive assessments provide a measurable profile of general cognitive ability in adults undergoing TBI rehabilitation. The WAIS, or Wechsler Adult Intelligence Scale, is a widely used instrument that yields a Full Scale IQ and separate index scores for verbal comprehension, working memory, perceptual reasoning, and processing speed. This breadth makes it particularly useful for establishing a baseline, identifying strengths and weaknesses, and guiding targeted rehabilitation plans. Other options focus on more specific domains or states: the Wisconsin Card Sorting Test emphasizes executive function and cognitive flexibility, the Trail Making Test mainly assesses processing speed and task-switching, and the CRS-R is designed to gauge levels of consciousness in patients emerging from coma. Because you want a standardized tool that covers multiple cognitive domains in adults with TBI, WAIS is the best choice.