Table 3.

Response times (in ms), means, and standard deviations as a function of age, target (present or absent), and set size (4, 12, 32) for correct responses

	Present			Absent
Age (in years)	Set Size 4 M (SD)	Set Size 12 M (SD)	Set Size 32 M (SD)	Set Size 4 M (SD)	Set Size 12 M (SD)	Set Size 32 M (SD)
4	1,908 (32)	2,131 (35)	2,579 (52)	2,781 (57)	3,619 (88)	4,673 (147)
5	1,463 (39)	1,777 (42)	2,281 (62)	2,399 (68)	3,353 (106)	4,702 (177)
6	1,238 (36)	1,517 (39)	1,894 (58)	1,949 (63)	2,948 (99)	4,250 (164)
7	1,137 (38)	1,377 (41)	1,789 (61)	1,616 (67)	2,410 (104)	3,668 (173)
8	1,140 (39)	1,299 (43)	1,678 (64)	1,581 (69)	2,323 (108)	3,591 (180)
9	1,033 (36)	1,238 (39)	1,595 (58)	1,478 (63)	2,137 (99)	3,314 (164)
10	1,042 (41)	1,199 (45)	1,609 (66)	1,525 (72)	2,233 (113)	3,616 (188)
11–12	856 (43)	1,028 (47)	1,273 (70)	114 (76)	1,587 (119)	2,457 (197)
13–14	808 (40)	987 (44)	1,219 (65)	1,061 (71)	1,462 (111)	2,296 (184)
15–17	820 (37)	947 (41)	1,248 (60)	995 (65)	1,370 (102)	2,202 (170)
18–25	796 (34)	906 (37)	1,129 (55)	957 (60)	1,342 (94)	2,211 (156)

Note. M = mean; SD = standard deviation