1
Q
whole hand palmer grasp
A
6 months
2
Q
inferior pincer grasp
A
9 months
3
Q
improved tripod grasp
A
2 years and 6 months
4
Q
finger and hand play
A
3 months
5
Q
refined pincer and tripod grip
A
18 months
6
Q
mature pincer grasp
A
4 years
7
Q
uses preferred hand
A
2 years
8
Q
palmer grasp
A
15 months
9
Q
primitive tripod grasp
A
12 months
