How do the findings from the KF case relate to the components of the model?

• A. KF's case showed impaired visuospatial memory, supporting the integrated model.
• B. KF's selective impairment of verbal memory with preserved visuospatial memory supports separable phonological loop and visuospatial sketchpad.
• C. KF's case contradicted the WMM completely.
• D. KF's case showed intact memory across modalities, undermining WM distinction.

Answer: (B)

The findings test whether working memory has separate components for different types of information. KF’s profile shows a clear double dissociation: verbal (auditory/verbal) memory is impaired while visuospatial memory remains intact. This pattern supports having distinct stores—in other words, a phonological loop for verbal information and a visuospatial sketchpad for visual–spatial information—each operating under the control of a central executive.

That’s why this option is best: it directly reflects the selective verbal impairment with preserved visuospatial ability, illustrating separable components of the model. The other statements don’t fit KF’s pattern: KF did not show visuospatial impairment, so it doesn’t support an integrated single-store account; and KF did not have memory that is intact across modalities, which would undermine the idea of distinct WM systems.