When do dimension errors occur in BD?

Dimension errors in the Block Design (BD) subtest of the WISC-V can occur at any time during the presentation of the task. This aspect of the assessment is crucial because dimension errors refer to mistakes made when a child misinterprets the spatial or dimensional requirements of the blocks. Since the task involves ongoing manipulation of the blocks to match a given design, a child may encounter difficulties that lead to dimension errors throughout the entire duration of the activity, not just at a specific point.

By recognizing that these errors can arise at any stage, educators and practitioners can better understand how a child's cognitive processing may be affected by various factors such as fatigue, frustration, or misunderstanding of the task. This understanding allows for a more comprehensive evaluation of a child's spatial reasoning and problem-solving skills, which are essential components of their overall cognitive abilities as assessed by the WISC-V.