If adults performed the block tapping task as a measure of working memory capacity, they would most likely replicate sequences of what length correctly?

The block tapping task is a classic measure of working memory capacity that assesses an individual's ability to remember and replicate a sequence of taps on a set of blocks. In accordance with established findings in cognitive psychology, adults typically exhibit a span of working memory capacity that averages around 7 items, with a variability of plus or minus 2. This phenomenon is closely related to George Miller's famous concept of "the magical number seven, plus or minus two," which suggests that most people can hold approximately seven meaningful items in their short-term memory.

Since the block tapping task requires participants to recall a sequence of taps, the working memory capacity indicated by this research aligns with the understanding that adults would most effectively replicate sequences of approximately 5 to 9 items. Therefore, the option indicating a span of 7 plus or minus 2 accurately reflects the typical limits of adult working memory as established in psychological literature. This is why this answer is considered the most appropriate choice for the question regarding the length of sequences adults could replicate successfully.