Table 3.

Descriptive statistics of the performance in the MaRs-IB by age group and gender. m, males; f, females. s.e. = standard error, IQR = inter-quartile range.

age group	younger adolescents	mid-adolescents	older adolescents	adults
accuracy (mean)	61 (m = 57, f = 63)	68 (m = 67, f = 68)	73 (m = 72, f = 73)	81 (m = 79, f = 81)
accuracy (s.e.)	1 (m = 2, f = 1)	1 (m = 2, f = 2)	1 (m = 2, f = 1)	1 (m = 3, f = 1)
RT (median)	6944 (m = 7006, f = 6872)	7552 (m = 7964, f = 6841)	7952 (m = 8774, f = 7582)	9454 (m = 10 276, f = 9304)
RT (IQR)	3879 (m = 4301, f = 3772)	3723 (m = 4629, f = 2669)	3309 (m = 3338, f = 2781)	3231 (m = 3012, f = 3297)
items completed (mean)	33.68 (m = 34.4, f = 33.27)	32.29 (m = 32.17, f = 32.42)	28.99 (m = 28.24, f = 29.52)	33.43 (m = 31.96, f = 33.89)
items completed (s.e.)	0.74 (m = 1.26, f = 0.92)	0.76 (m = 1.19, f = 0.92)	0.75 (m = 1.22, f = 0.94)	0.93 (m = 2.07, f = 1.04)
inverse efficiency (median)	11 838 (m = 12 655, f = 11 100)	10 937 (m = 11 557, f = 10 150)	11 057 (m = 12 285, f = 10 694)	11 414 (m = 12 946, f = 11 226)
inverse efficiency (IQR)	4031 (m = 4821, f = 3263)	3852 (m = 4456, f = 3256)	4023 (m = 3941, f = 4470)	3668 (m = 4452, f = 3248)