A Level Psychology OCR Practice Exam

The study involving Hans, known as the Little Hans case, was primarily documented through a detailed factual diary maintained by his father. This diary included the father's observations of Hans's behavior, dreams, and fears, particularly his fear of horses. By documenting these accounts, Hans's father provided a rich source of qualitative data that Freud could subsequently analyze to support his theories, particularly those related to childhood development and the Oedipus complex. The use of a diary allowed for a systematic collection of data over time and gave insight into Hans's psychological state from a parental perspective, making it a valuable resource for Freud's interpretations.

The other methods mentioned, such as direct observation in a lab environment or using standardized questionnaires, were not employed in this specific study. Freud's analysis heavily relied on the subjective experiences and observations recorded in the diary rather than structured or experimental data collection methods.