c7f1ccc7___open_books_for_an_open_world__Response
[Reflex] Stepping [Stimulation] Hold the baby under the arm and permit the bare feet of the baby to touch a flat surface. [Age of disappearance] 2 months (this applies to a baby who has gained weight. For baby who is not as heavy, this reflex may be submissive.) [Function] This prepares the baby for voluntary walking. [Response] 
The baby will lift one foot after the other in a stepping fashion.
Human Physiology/Print Version - Wikibooks, open books for an open world