Table II.

Performance on the Flanker and sequential memory tasks by child sex.

	Males (mean ± SD, N = 39)	Females (mean ± SD, N = 49)
Flanker	N = 39	N = 49
Congruent trials
Reaction time (ms)	720 ± 166	778 ± 253
# Correct (max. 24)	22.2 ± 1.5	22.4 ± 2.5
# Missed	0.2 ± 0.6	0.3 ± 1.0
# False alarms	1.6 ± 1.4	1.3 ± 2.12
Performance efficiency (RT/#correct)
Raw scores	32.7 ± 8.5	35.6 ± 13.9
Log-transformed scores^A	3.49 ± 0.26	3.54 ± 0.34
Incongruent trials
Reaction time (ms)	821 ± 246	897 ± 340
# Correct (max. 24)	21.5 ± 2.2	21.5 ± 2.6
# Missed	0.2 ± 0.5	0.4 ± 0.9
# False alarms	2.4 ± 2.0	2.1 ± 2.3
Performance efficiency (RT/#correct)
Raw scores	38.6 ± 12.2	43.12 ± 20.6
Log-transformed scores^B	3.63 ± 0.31	3.70 ± 0.40
Interference control (B-A)^*	0.15 ± 0.14	0.16 ± 0.15
Sequential memory	N = 39	N = 48
Longest sequence (max. 6)^*	4.41 ± 0.88	4.21 ± 1.11

Performance measure used in all statistical analyses.