Psychopath and Narcissist Survivors Support Group

samvaknin · Joined: 15 Feb 2007 Posts: 2186

The Viennese neurologist, Sigmund Freud, was among the first to offer a model of psychological development in early childhood (within the framework of psychoanalysis). He closely linked the sex drive (libido) to the formation of personality and described five psychosexual stages, four of which are centered around various erogenous zones in the body.

The pursuit of pleasure ("the pleasure principle") and the avoidance of pain drive the infant to explore his or her self and the world at large. Pleasure is inextricably linked to sexual gratification. In the oral phase (from birth to 24 months), the baby focuses on the tongue, lips, and mouth and derives gratification from breast feeding, thumb sucking, biting, swallowing, and other oral exploratory activities.

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http://samvak.tripod.com/personalitydisorders34.html