Human evolutionary history suggests, according to many authors, that all humans, regardless of sex or gender, survive and thrive if they are loved and cared for. (bluetoad.com)
[10] In human evolutionary history, the Moro reflex may have helped infants cling to the mother while being carried around. (en.wikipedia.org)
Patterns of human genetic diversity: Implications for Human Evolutionary History and Disease. (parentingscience.com)