Dr Helen C. Purchase is a Senior Lecturer in the School of Computing Science, University of Glasgow. She has been awarded teaching excellence awards from both the University of Queensland and the University of Glasgow. Her research has been published in numerous journals including IEEE Transactions on Visualization and Computer Graphics, the International Journal of Human-Computer Studies, Information Visualization, Graph Drawing Conference and the ACM SIGCSE Bulletin. Her research focuses on visual aesthetics, collaborative learning in higher education and sketch tools for design.

• 1. Introduction; 2. Defining the research; 3. Experimental procedure; 4. Data collection and qualitative analysis; 5. Statistics; 6. Reporting; 7. Problems and pitfalls; 8. Six principles for conducting experiments; Appendix 1. Independent measures examples; Appendix 2. Statistical formulae; Appendix 3. Factor analysis example.

'Helen Purchase is a leading expert in computer science and this book reflects her considerable experience in the field. It gives practical, case study lead guidance on performing user studies in HCI, covering experimental design, procedure and analysis. It contains useful advice on best practice as well as covering potential pitfalls when conducting these experiments. Dr Purchase has produced an accessible guide that is a recommended read for anyone performing studies into how humans interact with computers.' Peter Rodgers, University of Kent

Dr Helen C. Purchase is a Senior Lecturer in the School of Computing Science, University of Glasgow. She has been awarded teaching excellence awards from both the University of Queensland and the University of Glasgow. Her research has been published in numerous journals including IEEE Transactions on Visualization and Computer Graphics, the International Journal of Human-Computer Studies, Information Visualization, Graph Drawing Conference and the ACM SIGCSE Bulletin. Her research focuses on visual aesthetics, collaborative learning in higher education and sketch tools for design.

• 1. Introduction; 2. Defining the research; 3. Experimental procedure; 4. Data collection and qualitative analysis; 5. Statistics; 6. Reporting; 7. Problems and pitfalls; 8. Six principles for conducting experiments; Appendix 1. Independent measures examples; Appendix 2. Statistical formulae; Appendix 3. Factor analysis example.

'Helen Purchase is a leading expert in computer science and this book reflects her considerable experience in the field. It gives practical, case study lead guidance on performing user studies in HCI, covering experimental design, procedure and analysis. It contains useful advice on best practice as well as covering potential pitfalls when conducting these experiments. Dr Purchase has produced an accessible guide that is a recommended read for anyone performing studies into how humans interact with computers.' Peter Rodgers, University of Kent

Dr Helen C. Purchase is a Senior Lecturer in the School of Computing Science, University of Glasgow. She has been awarded teaching excellence awards from both the University of Queensland and the University of Glasgow. Her research has been published in numerous journals including IEEE Transactions on Visualization and Computer Graphics, the International Journal of Human-Computer Studies, Information Visualization, Graph Drawing Conference and the ACM SIGCSE Bulletin. Her research focuses on visual aesthetics, collaborative learning in higher education and sketch tools for design.

• 1. Introduction; 2. Defining the research; 3. Experimental procedure; 4. Data collection and qualitative analysis; 5. Statistics; 6. Reporting; 7. Problems and pitfalls; 8. Six principles for conducting experiments; Appendix 1. Independent measures examples; Appendix 2. Statistical formulae; Appendix 3. Factor analysis example.

'Helen Purchase is a leading expert in computer science and this book reflects her considerable experience in the field. It gives practical, case study lead guidance on performing user studies in HCI, covering experimental design, procedure and analysis. It contains useful advice on best practice as well as covering potential pitfalls when conducting these experiments. Dr Purchase has produced an accessible guide that is a recommended read for anyone performing studies into how humans interact with computers.' Peter Rodgers, University of Kent