| |
ASD (n = 20)
|
Control (n = 38)
|
t / χ
2
|
p
|
|---|
|
Mean (SD)
|
Mean (SD)
|
|---|
|
Age
|
25.95 (7.96)
|
20.42 (5.64)
|
2.764
|
0.01
|
|
Verbal IQ
|
112.50 (14.65)
|
112.94 (9.94)
|
-0.135
|
0.89
|
|
Performance IQ
|
113.60 (10.39)
|
109.17 (9.06)
|
1.664
|
0.10
|
|
Full Scale IQ
|
114.70 (11.25)
|
112.82 (8.66)
|
0.709
|
0.48
|
|
Handedness (Absolute Value) a
|
68.55 (24.48)
|
74.72 (21.00)
|
-1.004
|
0.32
|
|
Right: Left: Ambidextrous
|
16:1:3
|
31:2:5
|
0.038
|
0.98
|
|
Male: Female ratio
|
17:3
|
34:4
|
0.247
|
0.62
|
|
IRB Insistence on Sameness
|
5.61 (3.85)
|
1.74 (1.70)
|
4.082
|
<0.01
|
|
Range
|
0-14
|
0-5
|
|
IRB Circumscribed Interests
|
8.17 (2.88)
|
2.18 (2.05)
|
8.927
|
<0.01
|
|
Range
|
4 to 13
|
0 to 9
|
|
IRB Motor Stereotypies
|
6.06 (3.64)
|
2.66 (2.39)
|
3.612
|
<0.01
|
|
Range
|
0 to 11
|
0 to 8
|
|
ADOS SBRI
|
1.68 (1.62)
|
N/A
|
N/A
|
N/A
|
|
Range
|
0 to 5
|
|
ADOS Communication
|
3.95 (1.36)
|
N/A
|
N/A
|
N/A
|
|
Range
|
2 to 7
|
|
ADOS Social Interaction
|
8.35(2.70)
|
N/A
|
N/A
|
N/A
|
|
Range
|
4 to 14
|
- aHandedness was indexed with the Edinburgh Handedness Inventory [39]. For each participant, this questionnaire provided handedness as both a continuous value (from −40 to 40, with larger negative values indicating a stronger preference for the left hand and larger positive values indicating a stronger right hand preference) and a categorical value (left-handed: <−40, ambidextrous: ≤-40 and ≤+40, and right-handed: > + 40). The absolute value of handedness is an index of the degree of ambidexterity regardless of right or left hand preference (with values closer to 0 indicating greater ambidexterity). The ADOS was only completed with the ASD group. ADOS, Autism Diagnostic Interview.
- IRB = Interview for Repetitive Behaviors.
- SBRI, Stereotyped Behaviors and Restricted Interests.
