The PSI is comprised of which two components?

The correct answer is that the Processing Speed Index (PSI) is comprised of two components: Coding and Symbol Search. These components are designed to assess a child's speed and accuracy in processing visual information, which is an important aspect of overall cognitive functioning.

Coding evaluates how quickly a child can process information using a code—a task that requires visual-motor coordination and quick decision-making. Symbol Search, on the other hand, measures the ability to scan, categorize, and respond to visual information rapidly and accurately. Together, these components provide insights into a child's processing speed, which is one of the key domains assessed by the WISC-V.

Understanding the PSI is essential as it reflects a child's ability to handle tasks efficiently in a time-constrained environment, which is practically applicable in both academic settings and daily life.