What age range aligns with the 'Sample items A and B, then item 5' for the MR test?

The 'Sample items A and B, then item 5' in the context of the WISC-V typically corresponds with the cognitive abilities and developmental milestones associated with children in the age range of 9-11 years. During this stage, children are generally expected to demonstrate more advanced reasoning abilities, problem-solving skills, and abstract thinking compared to younger age groups. The tasks involved in the MR (Mental Representation) test are designed to challenge those cognitive skills effectively, which becomes more apparent in this age bracket.

In contrast, younger children, such as those aged 4-5, are still developing foundational skills and may not be ready for more complex reasoning tasks. Similarly, while ages 6-8 may show early signs of developing cognitive skills, they are not fully representative of the advanced thinking expected at ages 9-11. For older age groups, such as 12-16, the cognitive tasks would typically be more sophisticated and aligned with higher-level reasoning and problem-solving abilities, which may not suit the specific item structure mentioned in the question. Thus, the age range of 9-11 aligns best with the expectations for the sample items referred to in the question.