All Acronyms. UA [Internet]; Jul 31, 2016 [cited 2016 Jul 31]. Available from: http://www.allacronyms.com/_Military/UA. 'UA', All Acronyms, 31 July 2016, <http://www.allacronyms.com/_Military/UA> [accessed 31 July 2016] All Acronyms, UA (Jul. 31, 2016, 2:07 AM), available at http://www.allacronyms.com/_Military/UA.
1 Human (Homo Sapiens): Humans begin to show self-recognition in the mirror test when they are about 18 months old, or in what psychoanalysts call the  mirror stage .
The palmar grasp reflex appears at birth and persists until five or six months of age. When an object is placed in the infant's hand and strokes their palm, the fingers will close and they will grasp it with a palmar grasp.hese reflexes are absent due to the development of the frontal lobes as a child transitions normally into child development. These primitive reflexes are also called infantile, infant or newborn reflexes.