What is the reverse rule for the BD assessment?

The reverse rule for the BD (Block Design) assessment refers to the procedure where test administrators may begin administering items in reverse order until two consecutive perfect scores are obtained. This approach is employed to ensure that the assessment captures the full range of a child's abilities, particularly if the initial items are too advanced for the child. By working backwards, the examiner can more accurately determine the starting point of a child's capability in visual-motor integration and spatial reasoning skills. This method helps to minimize ceiling effects that could occur if the child is unable to demonstrate their true potential right away. Using the reverse rule not only aligns with standardized testing practices but also enhances the validity of the assessment outcomes, providing useful insights into the child’s cognitive profile.