Table 1. Descriptive information about the participants.
| Age (year) | Girls | Boys | ||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| M (months) | Range | SD | M (months) | Range | SD | |
| 5 | 66.3 | 60-71 | 4.03 | 65.2 | 61-70 | 2.74 |
| 6 | 77.2 | 72-83 | 3.33 | 77.2 | 72-83 | 3.49 |
| 7 | 90.6 | 86-95 | 3.92 | 89.3 | 84-95 | 3.62 |
| 8 | 101.3 | 97-106 | 3.06 | 101.2 | 96-106 | 4.32 |
| 9 | 113.2 | 109-118 | 3.01 | 113.7 | 109-117 | 2.79 |
| 10 | 126 | 122-131 | 3.30 | 124.5 | 120-128 | 2.59 |
Note. Each group was comprised of 10 girls and 10 boys for a total of 20 children per age group.