Freud's psychosexual stages and the unconscious

The unconscious and personality

Freud believed most of the mind is unconscious: hidden wishes, memories and conflicts that we are not aware of but that still drive our behaviour. Defence mechanisms such as repression keep painful material out of awareness.

Personality has three parts:

• Id: present from birth, unconscious, seeks pleasure (the pleasure principle).
• Ego: develops in the first years; balances the id and reality (the reality principle).
• Superego: develops in the phallic stage through identification with the same-sex parent; our conscience and moral rules.

The five psychosexual stages

Libido (sexual energy) is focused on a different body area at each stage. If a stage is not resolved, the person may become fixated, and adult personality shows traits from that stage.

The Oedipus complex

In the phallic stage a boy desires his mother and sees his father as a rival. He fears his father will castrate him (castration anxiety), so he represses his desire and identifies with his father, taking on his values and gender role. This forms the superego.

For girls, Freud described the Electra complex and penis envy, resolved by identifying with the mother. These ideas are heavily disputed.

Evaluation

• Strength: highlights the importance of childhood experience, which later research (e.g. attachment) supports in general terms.
• Strength: led to a therapy (psychoanalysis) and influenced everyday language.
• Weakness: unfalsifiable: concepts like the unconscious cannot be directly tested, and the theory can explain any outcome.
• Weakness: based on case studies of a few people (e.g. Little Hans), interpreted subjectively, so low generalisability and objectivity.
• Weakness: gender bias (penis envy) and culture bias (middle-class Viennese patients).

Worked example

An adult is extremely tidy, punctual and stubborn. Explain this using Freud's theory.

1. These traits fit an anal-retentive personality.
2. This could result from harsh or early toilet training in the anal stage (about 1 to 3 years).
3. The conflict was not resolved, so the person is fixated at the anal stage.

Answer: Anal fixation from strict toilet training produced an anal-retentive personality.

Check yourself

1. What is the correct order of Freud's stages?
   • Anal, oral, phallic, genital, latency
   • Oral, anal, phallic, latency, genital
   • Oral, phallic, anal, latency, genital
   • Genital, latency, phallic, anal, oral
   Show answer

   Oral, anal, phallic, latency, genital. Oral (0 to 1), anal (1 to 3), phallic (3 to 6), latency, genital.

2. Which part of personality works on the pleasure principle?
   • Ego
   • Superego
   • Libido
   • Id
   Show answer

   Id. The id seeks immediate gratification.

3. When does the superego develop?
   • At birth
   • In the phallic stage, through identification with the same-sex parent
   • In the oral stage
   • In the genital stage
   Show answer

   In the phallic stage, through identification with the same-sex parent. Resolving the Oedipus complex forms the superego.

4. A person who bites their nails and smokes may be fixated at which stage?
   • Anal
   • Latency
   • Oral
   • Genital
   Show answer

   Oral. Mouth-focused habits suggest oral fixation.

5. In the Oedipus complex, castration anxiety leads the boy to
   • identify with his father
   • identify with his mother
   • move into the oral stage
   • develop penis envy
   Show answer

   identify with his father. Fear of the father leads to repression and identification.

6. Why is Freud's theory said to be unfalsifiable?
   • It has been proved false
   • It uses only experiments
   • Its concepts cannot be tested in a way that could prove them wrong
   • It was based on thousands of participants
   Show answer

   Its concepts cannot be tested in a way that could prove them wrong. The unconscious cannot be directly observed.

7. Explain what Freud meant by fixation.
   Show answer

   Fixation happens when the conflict of a psychosexual stage is not resolved, through frustration or overindulgence, so some libido stays focused on that stage and adult personality shows traits linked to it.. Unresolved stage leads to adult traits.

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Sources

• Pearson Edexcel International Advanced Subsidiary/Advanced Level in Psychology specification, Issue 5 (February 2021)
• Pearson IAL Psychology component guide: WPS02 (Issue 2, November 2024)
• Simply Psychology: Freud's psychosexual stages

Last updated 8 November 2026. Spotted a mistake? Tell us.