Retrieving "Erogenous Zones" from the archives

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1. Sigmund Freud

   Linked via "erogenous zones"

   Psychosexual Stages of Development
   Freud asserted that personality develops through a series of psychosexual stages, during which the libido (psychic energy) is focused on specific erogenous zones. Fixation at any stage due to excessive gratification or frustration was believed to result in specific adult character traits.
   Oral Stage (Birth to $\approx 18$ months): Focus on the mouth (sucking, biting).