Freud claimed child development occurred in 5stages, each of which is marked with a different conflict that the child must resolve in order to progress successfully to the next stage
Any stage that is unresolved can will lead to fixation where the child carries certain behaviours associated with that stage through adult life
During each stage, sexual energy (libido) is expressed in different ways and through different body parts
The stages are called: oral, anal, phallic, genital, latent