Usability checklists Norman’s Seven Principles for Transforming Difficult Tasks into Simple Ones Shneiderman’s eight golden rules of interface design Nielsen’s ten usability heuristicshttp://www.flickr.com/photos/themm/130146412
Exercise• Design a paper prototype• Based on a persona characteristic• To do: § Design paper prototype § User test § Adapt prototype, based on user test
Paper prototyping• What? – Interactive, visual representation of the user interaction – Material = paper – Interactive prototype • Contains: information, interactions, visuals, content,...• The system‘works’ – Simulate interactivity – Facilitator is ‘the computer’ – Scenario: functionalities of system • Facilitator does not explain the interface (↔ storyboard)
Paper prototyping• Why? – Fast – Low cost – Interactive – Lots of feedback – Adapt easily – No program skills needed Illustration by Kevin Cornell
Paper prototyping• What is not paper prototyping? – Visual design – Page lay out & navigation
1. Design paper prototype1. Add info to the persona2. Make a list of the User Interface elements3. Make every User Interface element § Different screens § UI elements4. Think of 5 tasks a user can do with your application. Try to make a workflow.
2.User tests1. 3 rolls 1. Facilitator (“ be the computer “) 2. Observator (Intro, give tasks, note) 3. End user2. Test § User: try to ‘think aloud’ & try to empathize in the persona § Facilitator: make the interaction as smooth as possible § Observator: Always try to ask why a user does certain actions. Your user is always right.