What is the maximum number of scores of 0 that can occur before discontinuing the SI?

When administering the Spatial Index (SI) on the WISC-V, the guidelines specify how many scores of zero can be tolerated before discontinuing the testing process. The standard procedure allows for up to three scores of zero. This means that if a child earns three consecutive scores of zero on the relevant subtests, the examiner should discontinue further testing in that section.

This approach is based on the understanding that if a child is consistently unable to respond successfully or make any progress after three attempts, it is an indication that the child may not be able to reliably demonstrate their capabilities in that area at the time of testing. Allowing for three scores of zero before discontinuation ensures a balance between giving the child an adequate opportunity to perform and not overextending the testing process unnecessarily.

Thus, allowing up to three scores of zero aligns with the testing protocol and ensures that the assessment maintains its integrity and purpose in evaluating cognitive abilities effectively.