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S.P.a.T.I.A.L. XXI Information

The Spatial Processing and Timed Intelligence Assessment Logic XXI contains 20 items and measures spatial intelligence. The maximum time that is allowed to complete the test is 14 minutes. There is only one correct answer per question and 6 answer choices per question.

The Spatial Processing and Timed Intelligence Assessment Logic XXI assesses intelligence with scores ranging up to an IQ of 152. The norming data is provided in the table below.

The Spatial Processing and Timed Intelligence Assessment Logic XXI was developed by Randy Myers.

Normative Data

Pearson's R: + 1

Raw	Estimated IQ, sd.15
1	96
2	100
3	104
4	108
5	112
6	116
7	120
8	124
9	128
10	132
11	134
12	136
13	138
14	140
15	142
16	144
17	146
18	148
19	150
20	152

Raw	Estimated IQ, sd.15
1	96
2	100
3	104
4	108
5	112
6	116
7	120
8	124
9	128
10	132
11	134
12	136
13	138
14	140
15	142
16	144
17	146
18	148
19	150
20	152

Raw	Estimated IQ, sd.15
1	96
2	100
3	104
4	108
5	112
6	116
7	120
8	124
9	128
10	132
11	134
12	136
13	138
14	140
15	142
16	144
17	146
18	148
19	150
20	152

S.P.a.T.I.A.L. XXI Information

Normative Data

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Raw	Estimated IQ, sd.15
1	96
2	100
3	104
4	108
5	112
6	116
7	120
8	124
9	128
10	132
11	134
12	136
13	138
14	140
15	142
16	144
17	146
18	148
19	150
20	152