1. Choose an appropriate observation strategy given a set of constraints. 2. Choose appropriate participants for observational studies or user studies. 3. Analyse users' existing work processes and identify breakdowns that indicate the need for a new interaction design. 4. Classify problems with conceptual models given a record of user behaviour. 5. Recall the key benefits and drawbacks of using metaphors in interaction design. 6. Choose an appropriate prototyping strategy given a set of constraints. 7. Create hand-drawn paper prototypes of an interaction design. 8. Choose an appropriate evaluation technique given a set of constraints. 9. Design an evaluation strategy for an interaction design project. 10. Evaluate a user interface design given a set of heuristics and propose solutions to any problems identified. 11. Choose between a within-subjects or a between-subjects experimental design given a set of constraints. 12. Classify possible experimental variables as independent, dependent, confounding, or non-variables. 13. Identify threats to internal and external validity in experimental design. 14. Perform a statistical analysis of quantitative experimental data.