Table 2.

Mean accuracy rates and response times by trial type in Experiment 2.

Set size	N	Age in months	Female	Accuracy (%)				Response times (ms)
				Pure blocks	Non-switch	Switch	Switch cost	Pure blocks	Non-switch	Switch	Switch cost
YOUNGEST CHILDREN
Small:Small	21	6;1 (0;4)	11	96.8 (5.6)	89.0 (14.9)	86.6 (17.7)	2.4 (12.3)	1339 (316)	1697 (427)	1785 (428)	88 (235)
Small:Large	19	6;1 (0;4)	12	93.8 (8.5)	89.8 (17.5)	84.2 (12.6)	5.6 (10.4)	1321 (389)	1679 (339)	1772 (458)	93 (306)
Large:Small	23	5;11 (0;4)	13	98.6 (4.1)	92.9 (7.6)	82.6 (14.6)	10.3 (11.1)	1540 (340)	1757 (424)	1871 (518)	115 (304)
Large:Large	21	6;0 (0;4)	10	95.2 (6.8)	96.4 (7.0)	88.5 (12.7)	7.9 (10.8)	1410 (387)	1761 (503)	1700 (387)	−62 (230)
MIDDLE CHILDREN
Small:Small	20	7;11 (0;3)	9	98.3 (3.4)	98.4 (2.8)	93.8 (6.7)	4.6 (6.2)	1167 (385)	1312 (301)	1389 (345)	77 (215)
Small:Large	20	7;11 (0;4)	9	98.3 (4.4)	98.1 (4.1)	91.5 (9.0)	6.7 (8.4)	1170 (280)	1427 (425)	1529 (376)	102 (248)
Large:Small	20	7;11 (0;4)	11	97.9 (4.6)	96.3 (5.1)	93.2 (5.8)	3.0 (7.4)	1404 (556)	1355 (367)	1499 (342)	144 (173)
Large:Large	19	8;0 (0;4)	10	96.7 (6.8)	95.4 (5.8)	90.4 (9.2)	5.0 (9.7)	1261 (257)	1403 (321)	1426 (271)	23 (233)
OLDEST CHILDREN
Small:Small	19	10;0 (0;3)	10	98.2 (4.5)	98.4 (4.6)	95.7 (7.6)	2.7 (4.9)	932 (162)	1140 (243)	1208 (223)	69 (164)
Small:Large	20	10;0 (0;3)	10	99.2 (3.7)	95.6 (5.0)	93.2 (6.7)	2.4 (4.5)	934 (171)	1184 (253)	1252 (243)	68 (145)
Large:Small	20	10;0 (0;4)	11	99.2 (2.6)	95.9 (5.1)	92.4 (6.1)	3.6 (6.5)	1076 (280)	1186 (401)	1293 (314)	107 (239)
Large:Large	21	10;0 (0;3)	11	97.6 (4.7)	97.6 (3.1)	94.1 (6.7)	3.5 (6.3)	1006 (139)	1213 (243)	1228 (207)	15 (196)

For ease of reference, switch costs are also shown. Standard deviations are presented in parentheses.