Even from birth the wicked go astray; from the womb they are wayward and speak lies. (Psalm 58:3)

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But, according to psychologists, they have already developed a sense of moral code - and can tell the difference between good and evil.

An astonishing series of experiments is challenging the views of many psychologists and social scientists that human beings are born as 'blank slates' - and that our morality is shaped by our parents and experience...