From: Relationships between magnitude representation, counting and memory in 4- to 7-year-old children: A developmental study
Group
Accuracy (%)
Median RT (ms)
4 yrs
70.5 (3.26)
4123 (586.2)
5 yrs
88.3 (3)
2465 (338.5)
6 yrs
93.4 (2.96)
3135 (291.7)
7 yrs
93.6 (2.87)
2941 (276.4)