Table 2.

Group characteristics.

	Controls	C1	C2	C3
N	158	339	260	178
Boys: n (%)	89 (56.33%)	271 (79.94%)	155 (59.62%)	110 (61.8%)
Girls: n (%)	69 (43.67%)	68 (20.06%)	105 (40.38%)	68 (38.2%)
Diagnosis: n (%)	6 (3.8%)	163 (48.08%)	83 (31.92%)	66 (37.08%)
ADHD: n (%)	1 (0.63%)	123 (36.28%)	46 (17.69%)	21 (11.8%)
Dyslexia: n (%)	2 (1.27%)	7 (2.06%)	20 (7.69%)	19 (10.67%)
Autism: n (%)	0 (0%)	36 (10.62%)	8 (3.08%)	13 (7.3%)
Age: M (SD)	10.85 (2.21)	10.43 (2.38)	10.74 (2.09)	9.82 (2.06)
IQ: M (SD)	109.66 (11.41)	96.6 (12.63)	93.4 (11.73)	88.94 (13.21)
Reading: M (SD)	108.7 (12.83)	91.61 (17.43)	86.51 (15.24)	79.43 (15.37)
Maths: M (SD)	115.52 (18.11)	89.67 (18.04)	82.73 (14.19)	79.58 (14.16)