Table 1.

Demographics characteristic of the participants in this study.

Variable	Characteristic	Experiment 1 (n)	Experiment 2 (n)
Gender	Boy Girl	23 23	22 23
Age (years)	7–8 9–10 11–12	14 16 16	14 15 16
Baseline (CE)	≤9 ≥10	22 24
Baseline (RT)	<450 450–500 >500	18 13 15
Baseline (DS)	≤7 ≥8		23 22
Total		46	45

CE = Commission errors (number); RT = Reaction time (millisecond); DS = Digit span (length).