1 Techniques

  • think-aloud
  • co-operative evaulation
  • paper and pencil protocol
  • audio recording
  • video recording
  • computer logging
  • user notebooks
  • post-talk walkthroughs

2 Disadvantages

  • observation bias exists
  • coding schemes
  • laborioua and difficult
  • experts needed, training needed
  • often a mix of multiple techniques
  • automatic protocol analysis tools available (esp. in usability labs)

3 Use Cases

needfinding evaluating-designs requirements-elicitation