The WIAT measures which of the following?

• A. Cognitive ability
• B. Adaptive behaviour
• C. Social skills
• D. Academic achievement

Answer: (D)

Academic achievement is what the WIAT is designed to measure—the level of skills a student has learned in school, such as reading, writing, mathematics, and related language and academic areas. It provides standardized scores that reflect day-to-day classroom learning and helps show how a student’s performance compares to same-age peers or grade-level expectations. This isn’t a test of general cognitive ability or intelligence, which would be assessed by other instruments. It also doesn’t focus on adaptive behavior (everyday living skills) or social skills, which are covered by different types of assessments. So the best choice is academic achievement because the WIAT targets what students have learned in school and can demonstrate in tested tasks.