Consumer Behavior Research Methods

Experimentation

Threats to External Validity

  • Interactive testing effect: prior measurement affects the response to independent variable

    – When people are asked to evaluate a brand, they will pay more attention to it afterwards (for example ad)

    Measuring intention to buy a product, increases actual buying probability (cars - 30% increase, financial services)

  • Reactive testing or Demand effects: abnormal behavior of participants because they know they are in a experiment and interpret the purpose of the experiment

    – Example: Hawthorne-effect --> People change their behavior because they are aware that they are observed

Diskussion