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Reflex

Stimulation

Infant's Response

Developmental Pattern

Blinking

Flash of light, puff of air

Closes both eyes

Permanent

Babinski

Sole of foot stroked

Fans out toes, twists in foot

Disappears after 9 months to 1 year

Grasping

Palms touched

Grasps tightly

Weakens after 3 months, disappears after

 

 

 

1 year

Moro (startle)

Sudden stimulation, such as

Startles, arches back, throws head

Disappears after 3 to 4 months

 

hearing loud noise or being

back, flings out arms and legs

 

 

dropped

and then rapidly closes them

 

 

 

to center of body

 

Rooting

Cheek stroked or side of mouth

Turns head, opens mouth and

Disappears after 3 to 4 months

 

touched

begins sucking

 

Stepping

Infant held above surface and

Moves feet as if to walk

Disappears after 3 to 4 months

 

feet lowered to touch surface

 

 

Sucking

Object touching mouth

Sucks automatically

Disappears after 3 to 4 months

Swimming

Infant puts face down in water

Makes coordinated swimming

Disappears after 6 to 7 months

 

 

movements

 

Tonic neck

Infant placed on back

Forms fists with both hands and

Disappears after 2 months

 

 

usually turns head to the right,

 

 

 

(sometimes called the "fencer's

 

 

 

pose" because the infant looks

 

 

 

like it is assuming a fencer's

 

 

 

position.