TABLES TO ASSIST IN ANALYSING TEST DATA FOR THIS CASE
S1 2004
(All tables have been derived from data published in the WAIS-III/WMS-III Technical Manual published by The Psychological Corporation, San Antonio, 1997 and the Tests Manuals of the WAIS-III, WMS-III, and WTAR)
Differences Between WAIS-III IQ Scores and Between Index Scores Required for Statistical Significance at the .05 Level for the 25 to 29 Age Group
|
|
VIQ – PIQ |
VCI – POI |
VCI – WMI |
POI – PSI |
VCI – PSI |
POI – WMI |
WMI – PSI |
|
p=.05 |
8.27 |
9.01 |
9.67 |
12.66 |
12.26 |
10.17 |
13.14 |
Differences Between WMS-III Primary Index Scores for Statistical Significance at the .05 Level for the 25 to 29 Age Group
|
|
AI – VI |
AI – AD |
VI – VD |
AD – ARD |
AD – VD |
IM - GM |
IM – WM |
GM – WM |
|
p=.05 |
13.8 |
12.5 |
17.1 |
16.9 |
16.1 |
11.8 |
13.5 |
13.5 |
One-Tailed
Frequencies of Differences Between WAIS-III IQ and Index Scores for Individuals
with FSIQ of 90 to 109
|
|
Difference |
Frequency |
|
VIQ – PIQ |
7 |
27.3% |
|
VCI – POI |
7 |
29.2% |
|
VCI – WMI |
21 |
4.8% |
|
POI – PSI |
28 |
2.3% |
|
VCI – PSI |
35 |
1.0% |
|
POI – WMI |
14 |
13.7% |
|
WMI - PSI |
14 |
16.3% |
One-Tailed
Frequencies of Differences Between WAIS-III IQ and Index Scores for Individuals
with FSIQ of 110 to 119
|
|
Difference |
Frequency |
|
VIQ – PIQ |
5 |
35.4% |
|
VCI – POI |
4 |
40.0% |
|
VCI – WMI |
23 |
3.9% |
|
POI – PSI |
30 |
2.5% |
|
VCI – PSI |
34 |
1.5% |
|
POI – WMI |
19 |
8.8% |
|
WMI - PSI |
11 |
23.1% |
One-Tailed Frequencies of Differences Between WMS-III Primary Index Scores
|
Comparison |
Difference |
Frequency |
Difference |
Frequency |
|
AI – VI |
6 |
35.5% |
2 |
46.93% |
|
AI – AD |
14 |
3.6% |
5 |
27.0% |
|
VI – VD |
13 |
6.0% |
9 |
16.8% |
|
AD – ARD |
-10 |
22.1% |
-6 |
32.8% |
|
AD – VD |
5 |
39.8% |
6 |
35.6% |
|
IM – GM |
12 |
4.4% |
7 |
17.1% |
|
IM – WM |
-2 |
46.3% |
2 |
46.3% |
|
GM – WM |
-14 |
18.9% |
-5 |
39.1% |
Comparisons of WAIS-III and WMS-III Composites Using Predicted Difference Method (Based Upon a FSIQ of 108).
|
WMS-III Index |
Predicted |
Obtained |
Difference |
p=.05 |
Frequency |
|
Auditory Immediate |
105 |
94 |
11 |
16.6 |
20% |
|
Visual Immediate |
103 |
88 |
15 |
19.1 |
15% |
|
Immediate Memory |
105 |
89 |
16 |
17.7 |
10-15% |
|
Auditory Delayed |
105 |
80 |
25 |
15.6 |
3% |
|
Visual Delayed |
103 |
75 |
28 |
17.2 |
2% |
|
Aud. Rec. Delayed |
104 |
90 |
14 |
15.0 |
15% |
|
General Memory |
105 |
77 |
28 |
16.9 |
1-2% |
|
Working Memory |
105 |
91 |
14 |
9.1 |
10% |
Comparisons of WAIS-III and WMS-III Composites Using Predicted Difference Method (Based Upon a FSIQ of 113).
|
WMS-III Index |
Predicted |
Obtained |
Difference |
p=.05 |
Frequency |
|
Auditory Immediate |
108 |
99 |
9 |
16.6 |
20-25% |
|
Visual Immediate |
105 |
97 |
8 |
19.1 |
>25% |
|
Immediate Memory |
107 |
98 |
9 |
17.7 |
20-25% |
|
Auditory Delayed |
107 |
94 |
13 |
15.6 |
15% |
|
Visual Delayed |
105 |
88 |
17 |
17.2 |
10% |
|
Aud. Rec. Delayed |
106 |
100 |
6 |
15.0 |
>25% |
|
General Memory |
108 |
91 |
17 |
16.9 |
5-10% |
|
Working Memory |
109 |
96 |
13 |
9.1 |
10-15% |
Differences Between Single Subtest Scaled Scores and Mean Scaled Score at the .05 Level of Statistical Significance and Magnitude of Difference Found in 5% of the Standardisation Sample
|
|
Verbal |
Subtests |
Performance |
Subtests |
All |
Subtests |
|
Subtest |
p<.05 |
5% |
p<.05 |
5% |
p<.05 |
5% |
|
VO |
2.10 |
3.00 |
|
|
2.30 |
3.38 |
|
SI |
2.77 |
3.29 |
|
|
3.12 |
3.69 |
|
AR |
2.63 |
3.57 |
|
|
2.95 |
3.85 |
|
DS |
2.40 |
4.43 |
|
|
2.67 |
4.62 |
|
IN |
2.34 |
3.29 |
|
|
2.59 |
3.69 |
|
CO |
2.96 |
3.57 |
|
|
3.35 |
3.58 |
|
LNS |
3.16 |
4.29 |
|
|
3.60 |
4.38 |
|
PC |
|
|
3.16 |
3.86 |
3.46 |
4.31 |
|
CD |
|
|
3.04 |
4.29 |
3.31 |
4.46 |
|
BD |
|
|
2.94 |
3.71 |
3.19 |
3.92 |
|
MR |
|
|
2.60 |
3.71 |
2.75 |
3.85 |
|
PA |
|
|
3.75 |
4.14 |
4.19 |
4.46 |
|
SS |
|
|
3.54 |
3.86 |
3.93 |
4.23 |
|
Classification
of Ability Levels |
|||||
|
|
|
|
WAIS |
%age |
Lower |
|
Classification |
Kramer (1990) |
Z-Score |
Subtest |
included |
limit %ile |
|
Very Superior |
Significantly above
average |
+2.0 and above |
16 to 19 |
2.2 |
98 |
|
Superior |
Above average |
+1.3 to +2.0 |
14 to 15 |
6.7 |
91 |
|
High Average |
High average |
+0.6 to +1.3 |
12 to 13 |
16.1 |
75 |
|
Average |
Average |
-0.6 to +0.6 |
8 to 11 |
50.0 |
25 |
|
Low Average |
Low average |
-1.3 to -0.6 |
6 to 7 |
16.1 |
9 |
|
Borderline |
Below average |
-2.0 to -1.3 |
4 to 5 |
6.7 |
2 |
|
Defective |
Significantly below
average |
-2.0 and below |
1 to 3 |
2.2 |
- |
130 and
above Very
Superior
120-129 Superior
110-119 High Average
90-109 Average
80-89 Low
Average
70-79 Below
Average
69 and below Extremely Low