ABSTRACT
Norms make it possible to compare individual scores with typical scores. This chapter presents normative data so that responses to the Silver Drawing Test (SDT) by particular individuals can be compared with others. For rough estimates, individual scores above the mean indicate above-average performance; scores below the mean indicate below-average performance. For more precise information, percentile ranks and t scores are provided in tables 9.8 to 9.10. Percentile Rank and t-Score Conversions for the STD Predictive Drawing Task
|
Grade |
1 |
2 |
3 |
4 |
5 |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Age |
6–7 |
7–8 |
8–9 |
9–10 |
10–11 |
|||||
|
Score |
t |
% |
t |
% |
t |
% |
t |
% |
t |
% |
|
1 |
36.26 |
4 |
24.67 |
1 |
22.10 |
1– |
||||
|
2 |
36.91 |
10 |
28.67 |
2 |
25.86 |
1 |
24.00 |
1– |
||
|
3 |
41.55 |
15 |
32.67 |
4 |
29.63 |
2 |
27.86 |
1 |
||
|
4 |
46.20 |
35 |
36.67 |
9 |
33.40 |
5 |
31.72 |
3 |
24.90 |
1 |
|
5 |
50.84 |
53 |
40.67 |
18 |
37.16 |
10 |
35.58 |
7 |
29.46 |
2 |
|
6 |
55.49 |
71 |
44.67 |
30 |
40.93 |
18 |
39.44 |
14 |
34.02 |
5 |
|
7 |
60.14 |
84 |
48.67 |
45 |
44.70 |
30 |
43.30 |
25 |
38.57 |
13 |
|
8 |
64.78 |
93 |
52.68 |
61 |
48.46 |
44 |
47.16 |
39 |
43.13 |
25 |
|
9 |
69.43 |
97 |
56.68 |
75 |
52.23 |
59 |
51.02 |
54 |
47.69 |
41 |
|
10 |
74.08 |
99+ |
60.69 |
86 |
56.00 |
73 |
54.88 |
69 |
52.24 |
59 |
|
11 |
64.69 |
93 |
59.76 |
84 |
58.74 |
81 |
56.80 |
75 |
||
|
12 |
68.69 |
97 |
63.53 |
91 |
62.60 |
90 |
61.36 |
87 |
||
|
13 |
72.69 |
99+ |
67.30 |
96 |
66.46 |
95 |
65.91 |
94 |
||
|
14 |
71.06 |
98 |
70.32 |
98 |
70.47 |
98 |
||||
|
15 |
74.83 |
99+ |
74.18 |
99+ |
75.03 |
99+ |
|
Grade |
6 |
7 |
8 |
10 |
adult |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Age |
11–12 |
12–13 |
13–14 |
15–16 |
||||||
|
Score |
t |
% |
t |
% |
t |
% |
t |
% |
t |
% |
|
1 |
||||||||||
|
2 |
||||||||||
|
3 |
21.19 |
1– |
22.18 |
1– |
||||||
|
4 |
26.09 |
1 |
20.38 |
1– |
25.47 |
1 |
||||
|
5 |
30.98 |
3 |
25.41 |
1 |
28.77 |
2 |
||||
|
6 |
35.87 |
8 |
30.44 |
2 |
23.76 |
1– |
32.07 |
4 |
23.82 |
1– |
|
7 |
40.76 |
18 |
35.48 |
7 |
28.52 |
2 |
35.37 |
7 |
27.82 |
1 |
|
8 |
45.65 |
33 |
40.51 |
17 |
33.27 |
5 |
38.66 |
13 |
31.82 |
3 |
|
9 |
50.54 |
52 |
45.55 |
33 |
38.02 |
12 |
41.96 |
21 |
35.81 |
8 |
|
10 |
55.43 |
71 |
50.58 |
52 |
42.76 |
24 |
45.26 |
32 |
39.81 |
15 |
|
11 |
60.33 |
85 |
55.61 |
71 |
47.53 |
40 |
48.56 |
44 |
43.81 |
27 |
|
12 |
65.22 |
94 |
60.65 |
86 |
52.28 |
59 |
51.85 |
58 |
47.80 |
41 |
|
13 |
70.10 |
98 |
70.72 |
98 |
57.03 |
76 |
55.15 |
70 |
51.80 |
57 |
|
14 |
75. 00 |
99+ |
75.75 |
99+ |
61.79 |
88 |
58.45 |
80 |
55.80 |
72 |
|
15 |
66.54 |
95 |
61.79 |
88 |
59.80 |
84 |
