Certified Rehabilitation Counselor Practice

The General Ability Index (GAI) is based on which indices?

1. Verbal Comprehension Index and Visual Spatial Index

2. Verbal Comprehension Index and Perceptual Reasoning Index

3. General Cognitive Index and Working Memory Index

4. Cognitive Abilities Index and Processing Speed Index

The correct answer is: Verbal Comprehension Index and Perceptual Reasoning Index

The General Ability Index (GAI) is specifically designed to reflect an individual's intellectual functioning while minimizing the influence of working memory and processing speed. It is traditionally derived from the composite scores of the Verbal Comprehension Index and the Perceptual Reasoning Index. This approach allows for a more accurate assessment of an individual's cognitive abilities by focusing on verbal reasoning and non-verbal problem-solving skills, which are critical components of general intelligence. The reasoning behind using these two indices is rooted in the understanding that they tap into fundamental cognitive skills that demonstrate a person’s capacity for reasoning, problem-solving, and comprehension without being detrimentally affected by factors such as memory limitations or processing speed. Thus, the option regarding the Verbal Comprehension Index and Perceptual Reasoning Index represents the core cognitive processes included in the GAI assessment, making it the appropriately correct choice.