Release
10-14 (months)
able to release (clumsy) into small container; hand rests on edge of container
1-4 (months)
involuntary release
6-7 (months)
one-stage transfer; taking hand and releasing hand perform actions simultaneously
12-15 (months)
precise, controlled release into small container with wrist extended
4-8 (months)
transfers object from hand to hand
5-6 (months)
two-stage transfer; taking hand grasps before releasing hand lets go
7-9 (months)
volitional release Presses down on surface to release
8 (months)
releases above a surface with wrist flexion
9-10 (months)
releases into a container with wrist straight