Evaluators initially work separately
Results collated after initial wave of evaluation
Report generation:
By evaluator themselves (takes more
time/more expensive)
Recorded and reported by an observer
Observers can also provide help with specific system
Sessions last typically 1-2 hours:
First iteration to get an idea of system dialogue/flow
Second iteration to analyse specific features
Evaluation based on a generalised usability criterion
Report identifies violations of heuristics