Final answer:
The Oedipus and Electra complexes are resolved through identification with the same-sex parent, which leads to internalizing their values and behaviors and diminishes the romantic attachment to the opposite-sex parent.
Step-by-step explanation:
The Oedipus complex (in boys) and the Electra complex (in girls) are resolved through identification with the same-sex parent and internalizing their values and behaviors. During the phallic stage of psychosexual development, children experience a desire for the opposite-sex parent and feel jealousy towards the same-sex parent. The resolution of this complex, according to Freud, involves the child beginning to identify with the same-sex parent, which diminishes their romantic attachment to the opposite-sex parent and allows the child to internalize societal values and norms. This process is guided by the development of the superego, representing internalized social rules. These dynamics are part of a series of developmental stages proposed by Freud, wherein successful negotiation of each stage's conflicts is thought necessary for a person to become a well-adjusted adult.