This chapter discusses evaluation techniques and universal design. It covers the goals of evaluation such as assessing functionality and user experience. Choosing an evaluation method depends on factors like when in the design process it occurs and available resources. Universal design principles include equitable use, flexibility, simplicity and perceptible information. It aims to design products for use by diverse people. Multimodal systems use multiple senses while multimedia uses different media. Designing for diversity involves integrating help into systems.

1. Chapter 7:Evalution techniques and universal design
Evaluation techniques
 What is evaluation?
 https://www.studocu.com/en/document/monash-university/human-computer-
interaction/past-exams/past-exam-hci-2017/1302618/view
 Goals of evaluation
 Choosing an evaluation methods
Universal Design
 Universal design principles
 Multimodal interaction
 Designing for diversity

2. Evaluation techniques
What is evaluation?
• Tests usability and functionality of system
• Occurs in laboratory, field and/or in collaboration with users
• Evaluates both design and implementation
• Should be considered at all the stages in the design life cycle
Goals of evaluation
• To assesses the extent and accessibility of the system’s functionality
• To assess users experience of the interaction
• To identify any specific problems with the system.

3. Choosing an evaluation method
How do we decide which methods are most appropriate for our needs?
• Each method has its particular strengths and weaknesses and each is useful if applied
appropriately
The choice of evaluation method is largely dependent on what is required of the evaluation
 When in process
 Style of evaluation
 How objective
 Type of measure
 Level of information
 Resources available

4. Universal design
Universal design is the process of designing products so that they can be used by as
many people as possible in as many situations as possible.
Universal design principles
• Equitable use: No user is excluded or stigmatized
• Flexibility in use:-allows for a range of ability and preference
• Simple and intuitive to use: should not be unnecessarily complex
• Perceptible information:- different forms & support the range of devices
• Tolerance for error:-minimizing the damage caused by mistakes
• Low physical effort:-minimizing physical effort and fatigue

5. Multi-modal vs multi-media
Multi-modal systems
• Use more than one sense(or mode) of interaction
e.g. visual and aural senses: a text processor may speak the words as well as echoing
them to the screen
Multi-media systems
• Use a number of different media to communicate information
e.g. a computer based teaching system may use video animation. Text and still
images: different media all using the usual mode of interaction.

6. Designing for diversity
• There is often an implicit assumption properly designed interactive system can be used
by anybody with little or no help or training, but it is far from true. So, designing help
into an interactive system is important.
• User support should be designed integrally with the system- it is not an `add on’.