The term "n=1 (Experiment)" refers to a research design where a single subject is studied in depth. This approach allows researchers to gather detailed data about an individual’s behavior, responses, or conditions over time. It is often used in fields like psychology and medicine to understand unique cases or to test the effects of an intervention on one person. In an n=1 experiment, the subject serves as their own control, meaning that changes in their condition can be directly observed and measured. This method can provide valuable insights, especially when exploring personalized treatments or interventions, as seen in clinical trials or case studies.