Experiments

• Help to build decisions on (dis)proving hypotheses instead of relying on gut-feeling
  • the process of (dis)proving hypotheses – Operationalization
• Can be constructed with the help of Hypothesis
• Contradictory to Research-MOC – experiment has a clearly defined hypothesis
• Typically compares two or more variants and systematically watches differences between them

Types

• Customer interviews
• Card sorting
• A/B/n testing
• Fake-door tests

Example

Problem

• Orientation in a hospital
  Hypothesis
• New set of pictograms speeds up the navigation process
  Metrics
• walkthrough time
• content understanding

Participant counts

• formative testing (finding problems, ...)
  • 5-8 should be fine
• comparing alternatives
  • 15-30 per group
  • more for A/B/n tests

Related notes

• Hypothesis
• Design research
• Usability testing
• Behavioral design
• Insight