|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of Items on |
|
Percent of Item increase - WISC-III to |
|
Number of WISC-III Items Retained on |
|
Percent of WISC-III Items Retained on |
|
Number of New Items Written or Reworded |
|
Percent of New Items Written or reworded |
|
Subtest |
WISC-III |
|
WISC-IV |
|
WISC-IV |
|
WISC-IV |
|
WISC-IV |
|
for WISC-IV |
|
for WISC-IV |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Verbal/Verbal
Comprehension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Information |
30 |
|
33 |
|
10.0% |
|
22 |
|
73.3% |
|
11 |
|
33.3% |
|
Similarities |
19 |
|
23 |
|
21.1% |
|
12 |
|
63.2% |
|
11 |
|
47.8% |
|
Vocabulary |
30 |
|
36 |
|
20.0% |
|
27 |
|
90.0% |
|
9 |
|
25.0% |
|
Comprehension |
18 |
|
21 |
|
16.7% |
|
10 |
|
55.6% |
|
11 |
|
52.4% |
|
Word Reasoning |
|
|
24 |
|
|
|
|
|
|
|
24 |
|
100.0% |
|
Performance/Perceptual Reasoning |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Picture Completion |
30 |
|
38 |
|
26.7% |
|
27 |
|
90.0% |
|
12 |
|
31.6% |
|
Picture Arrangement |
14 |
|
Dropped |
|
Block Design |
12 |
|
14 |
|
16.7% |
|
10 |
|
83.3% |
|
4 |
|
28.6% |
|
Object Assembly |
|
|
Dropped |
|
Mazes |
10 |
|
Dropped |
|
Picture Concepts |
|
|
28 |
|
|
|
|
|
|
|
28 |
|
100.0% |
|
Matrix Reasoning |
|
|
35 |
|
|
|
|
|
|
|
35 |
|
100.0% |
|
Processing Speed |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Symbols Search |
45**/45*** |
|
45**/60*** |
|
33.3% |
|
45 |
|
100.0% |
|
15 |
|
25.0% |
|
Coding |
59** / 119*** |
|
59** / 119*** |
|
0.0% |
|
59** / 119*** |
|
100.0% |
|
0 |
|
0.0% |
|
Cancellation |
|
|
640 |
|
|
|
|
|
|
|
640 |
|
100.0% |
|
Freedom from
Distractibility/Working Memory |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Digit Span* |
30 |
|
36 |
|
20.0% |
|
31 |
|
103.3% |
|
5 |
|
13.9% |
|
Arithmetic |
24 |
|
34 |
|
41.7% |
|
12 |
|
50.0% |
|
22 |
|
64.7% |
|
Letter-Number
Sequence |
|
|
10 |
|
|
|
|
|
|
|
10 |
|
100.0% |
|
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Verbal/Verbal
Comprehension |
97 |
|
137 |
|
41.2% |
|
71 |
|
73.2% |
|
66 |
|
48.2% |
|
Performance/Perceptual Reasoning |
66 |
|
115 |
|
74.2% |
|
37 |
|
56.1% |
|
79 |
|
68.7% |
|
Processing Speed |
104**/164*** |
|
744**/819*** |
|
615.4% |
|
104**/164*** |
|
|
|
655 |
|
88.0% |
|
Freedom from
Distractibility/Working Memory |
54 |
|
80 |
|
48.1% |
|
43 |
|
|
|
37 |
|
46.3% |
|
Full Scale |
321**/381*** |
|
1076**/1151*** |
|
235.2% |
|
255**/315*** |
|
79.4% |
|
837 |
|
77.8% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note: Subtests in italic
are new to the WISC-IV. * Digit Span retained the same number series with
the exception of 3 series having only 1 number changed ** refers to Form A,
*** refers to Form B |
|
The number and percent
of items retained from the WISC-III to the WISC-IV includes only those items
that were taken directly from the WISC-III. Several items (e.g., Arithmetic)
have had substantial word changes and so were not counted as having been
retained. The new items written for the WISC-IV are expressed as a
percentage of the number of items on the WISC-IV. |
