Table 5.

Percentiles (10, 50, and 90) by age for the Psychology Experiment Building Language Tower of London test for the number of extra moves and time (seconds)

		Moves			Time
Age	N	10	50	90	10	50	90
6–8	44	7.5	27.0	57.0	150.6	265.0	503.2
9–10	42	6.0	15.5	33.0	113.1	161.6	272.1
11–12	32	5.0	13.0	37.7	98.4	135.6	224.4
13–15	30	5.1	15.0	31.9	89.6	116.9	203.9
16–19	22	4.3	8.5	22.0	73.0	120.4	245.9
20–29	27	3.8	10.0	20.4	83.8	127.1	227.4
30–39	40	2.1	8.0	23.0	95.8	150.7	248.8
40–49	32	3.0	10.0	20.1	110.6	165.2	260.1
50–59	20	2.4	11.5	37.9	106.7	159.5	293.0
60–82	36	4.7	13.0	25.9	138.7	216.4	443.6