What constitutes the total number of rotational errors in BD?

The total number of rotational errors in the Block Design (BD) subtest of the Wechsler Intelligence Scale for Children - Fifth Edition (WISC-V) refers specifically to the direct count of errors made while attempting to recreate the two-dimensional designs using three-dimensional blocks. This count is termed the rotational error score. It quantifies the number of instances in which the child incorrectly rotates the blocks while trying to match the target design.

By focusing on the rotational errors, this score helps assess the child’s spatial reasoning abilities and understanding of visual-motor integration. It is essential for quantifying a child's performance related to spatial tasks within the BD subtest, providing insight into specific cognitive processes.

In contrast, a dimension score might aggregate scores across different areas or items, a raw score typically reflects the total number of tasks completed correctly without specifying error types, and a time bonus could relate to additional scoring for speed rather than accuracy in executing the block designs. Hence, the rotational error score is the most precise answer regarding what constitutes the total number of rotational errors made during the Block Design task.