each stage has conflict child must resolve in order to progress successfully to next stage - unresolved leads to fixation
oral (0-1) - mouth - oral fixation (smoking, biting nails, sarcastic, critical)
anal (1-3) - anus - anal retentive (perfectionist, obsessive) anal expulsive (thoughtless, messy)
phallic (3-6) - genitals - phallic personality (narcissistic, reckless)
latency - earlier conflicts are repressed
genital - sexual desires become conscious alongside onset of puberty - difficulty forming heterosexual relationships