1) The document discusses Sigmund Freud's theory of the Oedipus complex and how it is resolved in boys and girls during early childhood development.
2) For boys, the fear of castration leads them to abandon their sexual desires for their mother and hostility toward their father. This allows them to identify with their father and incorporate his authority into their developing superego.
3) For girls, realizing she does not have a penis like boys leads her to assume she was castrated, removing the fear of castration. She then gives up her love for her father and jealousy of her mother due to external pressures and threats of losing love.