WJ-III COG measures which domain?

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

Answer: (A)

The main idea here is that the WJ-III Cognitive (COG) battery is designed to measure cognitive abilities—the mental processes people use to think, reason, and solve problems, such as memory, processing speed, and fluid reasoning. It targets how effectively someone can think through tasks, not what they have learned or how they function in daily life.

This distinguishes it from other domains. Academic achievement tests (the ones labeled for school learning) assess knowledge and skills already acquired, like reading or math. Adaptive behavior evaluates everyday functional skills, such as how well someone manages daily tasks. Social skills focus on interpersonal behavior. So the cognitive battery specifically targets thinking processes, not learned content, daily functioning, or social interaction.