1
Q

0-1 month

A

No release; grasp reflex is strong.

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2
Q

1-4 months

A

Involuntary release

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3
Q

4 month

A

Mutual fingering in midline

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4
Q

4-8 months

A

Transfers object from hand to hand

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5
Q

5-6 months

A

Two-stage transfer; taking hand grasps before releasing hand lets go.

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6
Q

6-7 months

A

One- stage transfer; taking hand and releasing hand perform actions simultaneously.

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7
Q

7-9 months

A

volitional release

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8
Q

7-10 months

A

Presses down on surface to release

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9
Q

8 months

A

Releases above a surface with wrist flexion.

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10
Q

9-10 months

A

Releases into a container with wrist straight.

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11
Q

10-14 months

A

Clumsy release into small container; hand rests on edge of container.

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12
Q

12-15 months

A

Precise, controlled release into small container with wrist extended.

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