What does LDSb score based on?

The LDSb score in the context of the WISC-V is based on the last backward trial. In the assessment of working memory, specifically within the Digit Span subtest, the participant is asked to repeat a series of numbers both forwards and backwards. The backward trials are designed to measure the individual's ability to hold information in mind and manipulate it, which is a critical component of working memory.

The significance of focusing on the last backward trial is that it reflects the child's most recent performance under the task's demands, showcasing their ability to handle increasingly complex cognitive tasks. This backward recall requires not just memory retention, but also cognitive processing to accurately reverse the sequence, which can indicate higher cognitive functioning and the capacity for more complex reasoning skills. Thus, the LDSb score is particularly valuable as it provides insight into the child's cognitive flexibility and working memory capabilities.