Born Good Learn Bad

Social animals are born socially responsible at least within their species.  That is they are born good.  Socialization begins at birth and in general reinforces good social behavior.  Play well with others, share, be empathetic, respect authority, and don't hurt others.  The good and bad news is that the socialization is exclusively within the tribe.  Belief Systems (BS) are not generally important at this stage.  I place the break at about Kindergarten, where children begin to be exposed to those outside the tribe.  At that point BS about "them" enters the socialization process and depending on the BS reinforced in Religious Education, and BS group formation in school, bad habits and prejudice may come into play in the social conditioning process.