Gifted Adult's Inventory of Aspergerisms (GAIA) - Statistical Report

Paul Cooijmans Dec 2 2001

Scores out of 54 after removal of items 15, 27, 30 31, 35 and 40 (202 submissions, median score 23):

01**
02*
03***
04**
05*
06**
07*****
08***
09***** **
11*****
12***** *
13***
14****
15*
16***** ****
17***** **
18***** ****
19***
20***** ***
21***** *****
22***** ***
23***** ***** *
24***** ***** *
25***** ***
26***** ***
27*****
28***** *
29*****
30***** *
31***
32*****
33***** ***
34*****
35*
36***
37*****
39***
41*
42**
44*
45**
49*
51*
53*
54*

Males: 132, median 22
Females: 63, median 23

Norms

Note: The t-scores, with mean of 50 and standard deviation of 10, are based on a more recent sample (2008), and anchored to the P.S.I.A. Aspergoid scale. Therefore these t-scores reflect where one stands among intelligent adults in general, and not just among a group pre-selected for their interest in Asperger Syndrome (which - the latter - do the centiles which are based directly on the GAIA candidates). The t-scores are for that reason the most informative to learn where one stands among a more general population.

GAIA	Centile	t-score	Comment
0	0	37
1	.5	38
2	1	39
3	2	40
4	3	41
5	4	42
6	5	43
7	7	44
8	9	45	No diagnoses or serious problems up to here.
9	11	46	Various diagnoses and serious problems from here on.
10	13	47
11	14	48
12	17	49
13	19	50
14	21	51
15	22	52
16	25	53
17	29	54	Diagnosis of Asperger not unlikely from here on (but a psychiatrist is needed for that), but other diagnoses may be possible too, some of which get priority over Asperger. GAIA gives a general measure of disposition for psychiatric disorders and cannot point to one particular disorder.
18	33	55
19	36	56
20	39	57
21	43	58
22	48	59
23	52	60
24	58	61
25	63	62
26	66	63
27	69	64
28	72	65
29	75	66
30	78	67
31	80	68
32	82	69
33	85	70
34	89	71
35	90	72
36	91	73
37	93	74
38	95	75
39	95	76
40	96	77
41	96	78
42	97	79
43	97	80
44	97	81
45	97.5	82
46	98	83
47	98	84
48	98	85
49	98.3	86
50	98.5	87
51	98.8	88
52	99	89
53	99.3	90
54	99.75	91

Diagnoses

Diagnosis	#	Median score for those
Bipolar	12	23
Obsessive Compulsive Disorder	14	24
Depression	34	24.5
AD(H)D	13	28
Asperger Syndrome	22	30.5
Schizoid Personality	4	31.5

Major problems in life

Problem	#	Median score for those
Procrastination	4	14.5
Motivation	8	20.5
Financial	4	21.5
Various social problems	34	23
Finding mate/friends	15	26
Finding/keeping a job	15	27
Relationship problems	7	28

Item analysis

(60 items, 24 submissions with median score 25)

# = item number
P = %age of candidates checking that item
M = Median score of those checking the item

#	P	M
1	43	26.5
2	33	35
3	43	31
4	29	36
5	43	28
6	33	37
7	38	29
8	60	31.5
9	60	26.5
10	67	27.5
11	54	27
12	17	39
13	75	26.5
14	54	34
15	92	25
16	54	26
17	21	27
18	33	26.5
19	33	32.5
20	38	27
21	38	36
22	43	26
23	33	31.5
24	54	29
25	64	36
26	60	31.5
27	60	25
28	33	37
29	63	29
30	75	26
31	60	25
32	21	34
33	67	27.5
34	33	32
35	46	24
36	9	35
37	21	27
38	25	27,5
39	67	26
40	71	26
41	21	36
42	25	36
43	67	26.5
44	50	31.5
45	21	26
46	17	38
47	21	38
48	25	38
49	33	38
50	46	27
51	43	26
52	13	26
53	50	30
54	46	36
55	4	38
56	13	38
57	9	33
58	33	29
59	38	27
60	60	26.5

Additional statistics as of December 2005

Known GAIA scores of high-range testees

# testees: 40
Mean: 17.58
SD: 11.38
Male mean: 17.29
Female mean: 19.17 (6 persons)

2*
3**
4**
5*
6***
8**
9**
10***
11**
13*
15*
16*
18*
21***
22***
24*
28*
29****
32*
35*
36*
37*
38*
41*

National averages

Country	# scores	Average score
Canada	2	30
Australia	3	25
Israel	2	21
Netherlands	4	21
United_States	11	16.6
Finland	2	15
Sweden	3	15
Belgium	2	9.5
United_Kingdom	3	5.7

Correlation with IQ tests

Test	#	cor
Numbers	6	0.41
Test To End All Tests	6	0.25
WAIS	5	0.07
Final Test	9	0.05
Space, Time & Hyperspace	22	-0.09
Unknown tests	7	-0.1
Analogies #1	5	-0.12
Test of Shock and Awe	5	-0.33
Long Test For Genius	11	-0.35
Qoymans Multiple-Choice #4	8	-0.4
Association Subtest of LTFG	12	-0.42
Genius Association Test	5	-0.44
Qoymans Multiple-Choice	6	-0.55
Analogies of LTFG	12	-0.6
Qoymans Multiple-Choice #3	11	-0.63
NVCP	6	-0.84
Sigma Test	6	-0.88
Logima Strictica 36	5	-0.93

Weighted average of correlations: -0.319

So there is a negative correlation with IQ here. Over the past years a negative correlation has been repeatedly found between IQ and various indicators of disposition for psychiatric disorders, as well as between IQ and presence of actual psychiatric disorders.

Correlation with personal details

Personalia	#	cor
PSIA Introverted	5	0.8
Disorders (own)	16	0.78
PSIA Deviance	15	0.77
PSIA System	12	0.57
PSIA Orderly	5	0.33
Disorders (parents and siblings)	16	0.3
PSIA Cold	5	0.3
PSIA Aspergoid	5	0.25
Year of birth	26	0.21
PSIA Cruel	5	0.19
PSIA Neurotic	5	0.08
PSIA Ethics	15	0.08
PSIA Antisocial	5	0.04
PSIA Extreme	5	0.04
Educational level	16	-0.05
PSIA Rare	5	-0.15
Mother's educational level	15	-0.17
PSIA Just	5	-0.17
Father's eduational level	15	-0.18
PSIA True	5	-0.78
PSIA Rational	5	-0.86

The high positive correlations with Disorders and PSIA Deviance reflect the validity of the GAIA as a measure of disposition for psychiatric disorders. The lower correlations with the three measures of Educational level, though not significant, are related to the negative correlation between GAIA and IQ (educational level correlates positively with IQ).

Correlation with national IQs

-.25 over 36 pairs.