Topic 9: Sleep and dreaming - 9.2 Studies — Edexcel GCSE Psychology
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Topic 9: Sleep and dreaming - 9.2 Studies explained
Topic 9: Sleep and dreaming - 9.2 Studies covers 3 specification points, including Understand the aims, procedures and findings… and Freud (1909) Little Hans, analysis of a phobia….
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Open a point below for its explanation and revision guidance.
Understand the aims, procedures and findings (results and conclusions), strengths and weaknesses of:
This statement requires students to understand the core components of key studies in the Sleep and Dreaming topic. For any named study, students must describe its aims (what the researcher intended to investigate), procedures (the step-by-step method, including the sample and tasks), and findings (both the specific results obtained and the overall conclusions drawn). Furthermore, students must evaluate the study by identifying its strengths and weaknesses. For example, a strength might relate to the ecological validity of the setting, while a weakness could involve a biased sample or subjective interpretation of data. Evaluating studies requires linking these methodological points directly to the study's findings and overall credibility.
9.2.1 Freud (1909) Little Hans, analysis of a phobia in a five-year- old boy
Freud’s (1909) study of Little Hans aimed to investigate a five-year-old boy's phobia of horses and find evidence for the Oedipus complex. The procedure involved Hans's father observing his son's behaviour and dreams, then writing to Freud, who interpreted these reports. Freud concluded that Hans's fear of horses symbolised a fear of his father (castration anxiety) due to his unconscious desire for his mother. A key strength is the rich, qualitative data gathered, providing deep insight. However, weaknesses include the subjective nature of Freud's interpretations, the potential bias of the father's leading questions, and the inability to generalise findings from a single, unique case study to the wider population.
9.2.2 Siffre (1975) Six months alone in a cave
Michel Siffre spent six months in a cave to study the effects of isolation on the sleep-wake cycle, without external time cues like daylight or clocks. He found that his circadian rhythm extended from a 24-hour cycle to approximately 25 hours. His perception of time was also distorted; he believed he had been in the cave for a shorter period than he actually had. This demonstrated that the human body has an internal pacemaker (endogenous pacemaker) regulating sleep, but it requires external cues (exogenous zeitgebers) to stay synchronised with the 24-hour day. As a case study of one man, it lacks generalisability, and Siffre experienced severe physical and psychological deterioration during the isolation.
Your focus
- Describe the aims, procedures, and findings of key psychological studies.
- Distinguish between the results obtained and the conclusions drawn in a study.
- Evaluate psychological studies by explaining their methodological strengths and weaknesses.
Show all 9 objectives
- Describe the aims, procedures, and findings of Freud's (1909) Little Hans study.
- Explain how Freud interpreted Little Hans's phobia as evidence of the Oedipus complex.
- Evaluate the Little Hans study by identifying its methodological strengths and weaknesses.
- Describe the aims, procedures, and findings of Siffre's (1975) cave study.
- Explain the role of endogenous pacemakers and exogenous zeitgebers in the sleep-wake cycle.
- Evaluate the strengths and weaknesses of Siffre's study, including methodological and ethical issues.
Topic 9: Sleep and dreaming - 9.2 Studies exam tips
Marking Points
- Accurately state the specific aim of the named study.
- Describe the procedural steps, including participant details and the tasks they completed.
- Outline the key results (data or observations) and the conclusions drawn by the researcher.
- Identify and explain at least one methodological strength of the study.
- Identify and explain at least one methodological weakness, such as issues with generalisability or validity.
- Identify the aim: to investigate the origins of Little Hans's phobia and find evidence for the Oedipus complex.
- Recall the procedure: Hans's father observed him, recorded his dreams and conversations, and sent them to Freud via letter.
- State the findings: Freud interpreted the horse as a symbol of Hans's father, representing castration anxiety.
- Explain a weakness: the data was subjective, and the father may have used leading questions, reducing validity.
- Identify the aim: to investigate the natural sleep-wake cycle without external time cues.
- Describe the method: a six-month case study in a cave without natural light or clocks.
- State the findings: his sleep-wake cycle extended to around 25 hours, and time perception was distorted.
- Explain the conclusion: endogenous pacemakers control the sleep-wake cycle but need exogenous zeitgebers to maintain a 24-hour rhythm.
- Evaluate the study: strengths include detailed longitudinal data; weaknesses include lack of generalisability and psychological distress.
Examiner Tips
- 💡Use the acronym APF (Aims, Procedures, Findings) to structure your descriptions of key studies.
- 💡When evaluating, use the GRAVE acronym (Generalisability, Reliability, Application, Validity, Ethics) to generate specific strengths and weaknesses.
- 💡Always link your evaluative points back to how they affect the credibility of the study's conclusions.
- 💡Remember that the data collection method was correspondence (letters) between the father and Freud, which introduces significant bias.
- 💡Use this study to illustrate the concepts of the Oedipus complex and displacement in psychoanalytic theory.
- 💡When evaluating, focus on the lack of generalisability and the highly subjective nature of dream analysis.
- 💡Use the terms 'endogenous pacemaker' and 'exogenous zeitgeber' accurately when explaining Siffre's conclusions.
- 💡Remember that as a case study of one individual, the findings cannot be easily generalised to the wider population.
- 💡Be prepared to evaluate the ethics of the study, noting the severe psychological and physical toll the isolation took on Siffre.
Common Mistakes
- Confusing results with conclusions; correction: results are the specific data or observations collected, whereas conclusions are the broader interpretations of what those results mean.
- Providing generic evaluations; correction: always contextualise strengths and weaknesses by linking them specifically to the procedures or findings of the named study.
- Omitting procedural details; correction: ensure you can recall specific aspects of the method, such as the sample size, setting, or specific tasks participants were asked to do.
- Believing Freud directly observed or interviewed Little Hans; correction: Freud only met Hans once; the data was collected entirely by Hans's father and sent via letters.
- Stating that the study proves the Oedipus complex exists in all children; correction: as a case study of one boy, the findings cannot be generalised to the wider population.
- Confusing the phobia's literal object with its psychoanalytic meaning; correction: Hans was literally afraid of horses, but Freud concluded this was an unconscious displacement of his fear of his father.
- Believing Siffre's sleep cycle shortened. Correction: His sleep-wake cycle actually lengthened to around 25 hours.
- Thinking Siffre had no light at all. Correction: He had artificial light, which may have acted as a confounding variable affecting his circadian rhythm.
- Confusing endogenous and exogenous factors. Correction: Endogenous pacemakers are internal biological clocks, whereas exogenous zeitgebers are external environmental cues like sunlight.