Comparison | Discrepancy | Base Rate |
WAIS-IV | | |
Index Level Analysis | | |
Perceptual Reasoning – Verbal Comprehension | 19.0* | 11.0 |
Perceptual Reasoning – Working Memory | 33.0* | 1.5 |
Perceptual Reasoning – Processing Speed | 22.0* | 19.0 |
Verbal Comprehension – Working Memory | 14.0* | 21.5 |
Verbal Comprehension – Processing Speed | 3.0 | - |
Processing Speed – Working Memory | 11.0 | - |
Subtest Level Analysis | | |
Arithmetic – Digit Span | 4.0* | 9.4 |
Coding – Symbol Search | 2.0 | - |
Mean Subtest Scaled Score – Block Design$ | 1.7 | - |
Similarities – Mean Subtest Scaled Score$ | 0.3 | - |
Mean Subtest Scaled Score – Digit Span | 4.9* | 1-2% |
Matrix Reasoning – Mean Subtest Scaled Score$ | 3.3* | 5-10% |
Mean Subtest Scaled Score – Vocabulary$ | 2.7* | 2-5% |
Mean Subtest Scaled Score – Arithmetic | 0.9 | - |
Mean Subtest Scaled Score – Symbol Search | 1.9 | - |
Mean Subtest Scaled Score – Visual Puzzles$ | 1.7 | - |
Information – Mean Subtest Scaled Score$ | 2.3* | 10-15% |
Coding – Mean Subtest Scaled Score | 0.1 | - |
Digit Span Forwards – Digit Span Backwards | 2.0 | - |
Digit Span Sequencing – Digit Span Forwards | 1.0 | - |
Digit Span Sequencing – Digit Span Backward | 3.0 | - |
WMS-IV | | |
Subtest Level Analysis | | |
Symbol Span – Spatial Addition | 2.0 | - |