Statistics of Gliaweb Riddled Intelligence Test

© September 2011 Paul Cooijmans

Preliminary norms

Scores on Gliaweb Riddled Intelligence Test

Contents type: Verbal, numerical, spatial, logical.   Period: 2007-present

26 *
27 **
28 *
32 **
33 *******
34 ******
35 *******
36 ******
37 ****
38 ****
39 ****
41 *

Correlation with other tests

Because this test is often taken by candidates of whom no other scores are known, and for several other reasons, not enough significant correlations can be computed yet.

National medians for Gliaweb Riddled Intelligence Test

Country n median score
Finland337.0
United_Kingdom537.0
United_States1434.5
Australia334.0
Sweden233.5
Belgium231.5

For reasons of privacy, only countries with 2 or more candidates are included in this table. Ranking is based on the medians, and then alphabetic.

Correlation of Gliaweb Riddled Intelligence Test with personal details

Personalia n r
P.S.I.A. Antisocial - Revision 200780.62
P.S.I.A. Cold - Revision 200780.60
P.S.I.A. System factor - Revision 200780.48
P.S.I.A. Rare - Revision 200780.47
P.S.I.A. Just - Revision 200780.44
P.S.I.A. Cruel - Revision 200780.35
P.S.I.A. Introverted - Revision 200780.33
Gifted Adult's Inventory of Aspergerisms90.26
P.S.I.A. Rational - Revision 200780.26
P.S.I.A. Aspergoid - Revision 200780.20
Sex450.12
Educational level430.12
Disorders (parents and siblings)430.10
Year of birth450.06
Mother's educational level42-0.03
Father's educational level38-0.07
P.S.I.A. Deviance factor - Revision 20078-0.08
P.S.I.A. Neurotic - Revision 20078-0.12
P.S.I.A. True - Revision 20078-0.14
P.S.I.A. Orderly - Revision 20078-0.20
Disorders (own)43-0.21
P.S.I.A. Ethics factor - Revision 20078-0.25
P.S.I.A. Extreme - Revision 20078-0.26

Correlation with national I.Q.s of Gliaweb Riddled Intelligence Test

Correlation of this test with national average I.Q.s published by Lynn and Vanhanen:

Scores by age

Age class n median score
60 to 64333.0
55 to 59236.0
50 to 54233.5
45 to 49135.0
40 to 44436.5
35 to 39536.0
30 to 34235.0
25 to 29534.0
22 to 24937.0
20 or 21237.5
18 or 19234.0
17235.5
16233.5
15229.5
14128.0

Scores by year taken

Year taken n median score
20071136.0
2008434.5
2009433.0
20101835.0
2011738.0

ryear taken × median score = 0.38 (n = 44)

Robustness and overall test quality

Item analysis

Item statistics are not published as that would help future candidates. To detect bad items, answers and comments from candidates are studied, as well as, for each problem, the correlation with total score (validity of the item in this test) and the proportion of candidates getting it wrong (hardness of the item). Possible bad items are removed or revised, resulting in a revised version of the test.

Because a number of items has never been missed yet, and for several other reasons, some internal statistics can not be meaningfully computed yet.