Please enable JavaScript.
Coggle requires JavaScript to display documents.
(Unit 7. User-Centred Design (7.2 Usability (Benefits of enhanced…
Unit 7. User-Centred Design
7.1 User Centred Design
UCD Five Main Stages:
1. Research learning 2.Concept Examining 3.Iterative Design 4. Implementation 5. Launch
User centred design:
pays attention to needs and wants of potential users (also called empathetic design)
Iterative process:
understanding what one is designing through creating it (learning by completing)
Iterative process:
understanding what one is designing through creating it (learning by completing)
Whole-user experience:
Dependant on the designers understanding of the users (usability experiences and user experiences)
User
>
Task
>
Experience
7.2 Usability
Benefits of enhanced usability:
increase
(product acceptance, user experience, productivity)
decrease
(user error, training support)
Usability objectives include:
usefulness, effectiveness, learnability and likeability
Feedback, provision of information
(sight, smell, taste, touch, hearing)
Good user product interfaces:
poor organisation makes it harder for users to understand and remember product interfaces.
Simplicity and ease of use
Products with intuitive and easily accessible interfaces are more likely to be popular with consumers.
Visibility
: controls should be visible and obvious how they work
Affordance
: property of an object that indicates how it can be used
Population stereotypes
: for many common types of controls we expect certain types of controls (eg. turning or sliding in certain directions so that they perform an action)
Mapping
: relates to the correspondance of between the layout of controls and their required actions
Constraints
: limit the way a product is used
7.3 Strategies for User Research
User populations
: range of users for a particular product or system. There may be particular user populations a product is designed for however many products are designed for use by different or multiple populations. Designers use user groups data to represent a persone or profile that is representative of that group.
Classification of Users
: User populations can be classified into groups depending on age, gender and physical condition. This allows designers to obtain specific information and detailed feedback.
Personas
: A persona is a fictional person who represents a major user group and is behaviour-based, user archetype and used to make decisions about a product's features, use and design. Personas are presented to the design team as a single human with a name, face, attitudes and goals.
Use case
is a written document that describes the interaction from the user experience.
Personae
: typical stakeholders, needs must be satisfied. Multiple primary personas require separate interfaces
Secondary Personae
: not the primary target audience for a product but whose needs should meet. Provide valuable alternative insights to the development of a product.
Anti-personae
: whom the product is not designed for
Scenario
: imagined sequence of events in the daily life of a persona based on the assumption by research designers. Needs to consider best, worst and average case scenarios that provide a physical and social context for different personae.
UCD
user stories tell us what personae do and how they interact with the system.
7.4 Strategies for UCD
Primary research
: collection and analysis of original information from persons or organisations.
Secondary research
: analysis of existing information even though it may of been collected for a purpose other than the issue under investigation. Involves use of available information and is easier and quicker.
Quantitative data
: objective (numbers and logic)
Qualitative data
: subjective (words and images)
Field research
: takes place in users environment (eg. home, store, bank, hospital)
Method of extremes
: sample users are selected to represent the extremes of the user population plus one or two intermediate values**