Table 6.

Summary of hierarchical regression results.

RESULTS	Alertness	Distractibility	Divided Attention	Go/no-go	Flexibility	Sustained Attention
School grade (3 levels: 2, 3, 4–5)	NS	NS	p < 0.05 omissions visual stimuli conditions p < 0.05 RT median visual stimuli conditions p < 0.05 RT median acoustic stimuli conditions	NS	NS	p < 0.05 for number of omissions and RT median (first 5 min) omissions (second 5 min)
Gender (male/female)	NS	p < 0.05 RT median and false alarms (with and without distractor conditions)	p < 0.05 RT median visual stimuli condition	p < 0.05 false alarms and omissions	NS	p < 0.05 for number of false alarms (second 5 min) (second 5 min and total time)