Single Subject Designs are ideal for studying what?

• A. Group-level differences
• B. Behavioral changes
• C. Economic outcomes
• D. Pharmacokinetics

Answer: (B)

Single-subject designs examine how a single individual's behavior changes across different conditions or over time, using repeated measurements. This setup makes them especially good for showing behavioral changes — you can directly observe whether introducing an intervention leads to a real change in the target behavior for that person, demonstrating a functional relation within the individual. It’s not about comparing groups, which is why group-level differences aren’t the focus here. Economic outcomes involve costs across populations, and pharmacokinetics looks at drug concentrations and metabolism, not changes in a specific behavior. For example, you might track how often a person initiates a conversation before and after a social skills training, showing the treatment’s effect on that behavior.