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User Centered Design in short

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User Centered Design in short

  1. 1. Introduction to User Centered Design 1. What it is?. Philosophy and Principles. 2. How to use it? methodology and basic tools. 3. Beyond UCD. Alternatives methodologies TOPIC UCD In short Design notes: User Centered Design
  2. 2. is a Design methodology in which... 1. What it is UCD? needs, wants and limitations of the end users of a product. are considering during all stages of the design process* Analysis, design, implementation and Deployment First defined by DonaldNorman in 1986. Become a dominant paradigm in design of products, interfaces and applications design. Check: ISO 13407 (1999)
  3. 3. “” philosophy from system-centered design to user-centered design 1. What it is UCD? The system adapts to the user and not the opposite (as systems-centered or engineering-driven design)
  4. 4. principles 1. What it is UCD? Early focus on users, tasks and environment structured and systematic information gathering (interviews, observation, etc). Users are involved throughout design and development. Empirical measurement and testing Iterative design Testing with real users. Focus on ease of learning and ease of use design, test with users, refine, test with users again, refine…until it's right. 1 2 3
  5. 5. methodology 2. How to use it? Basic process* Sources: UXPA and W3.org Analysis Phase Meet with key stakeholders to set vision Include usability tasks in the project plan Assemble a multidisciplinary team to ensure complete expertise Develop usability goals and objectives Conduct field studies Look at competitive products Create user profiles Develop a task analysis Document user scenarios Document user performance requirements Design Phase and Evaluation phase (iterative) Begin to brainstorm design concepts and metaphors Develop screen flow and navigation model Do walkthroughs of design concepts Begin design with paper and pencil Create low-fidelity prototypes Conduct usability testing on low-fidelity prototypes Create high-fidelity detailed design Do usability testing again Document standards and guidelines Create a design specification Implementation Phase Do ongoing heuristic evaluations Work closely with delivery team as design is implemented. Conduct usability testing as soon as possible Deployment Phase Use surveys to get user feedback Conduct field studies to get info about actual use Check objectives using usability testing
  6. 6. methodology and tools 2. How to use it? Basic tools and techniques by process* This just illustrates a typical process of UCD applied to designing web applications. Analysis Phase Data gathering methods (interviews, observation, etc) User/Audience analysis Task/Purpose analysis AI analysis Workflow analysis Design Phase Conceptual/mental model Navigation design Storyboards, wireframes Detailed design Mockups Functional prototypes Evaluation Phase Cognitive walkthroughs Heuristic evaluation Guidelines reviews Usability testing Implementation Phase Heuristic evaluation Usability testing Deployment Phase Users feedback tools System tracking Usability testing Check: servicedesigntools.org
  7. 7. 3 basic tools 2. How to use it? personas Useful... to create a common shared understanding of the user group for which the design process is built around. to prioritize the design considerations by providing a context of what the user needs and what functions are simply nice to add and have. Why to use it? fictional character with all the characteristics of the user (of the primary stakeholder group. Also secondary and anti-persona). based on field research process (observation, stakeholders info, interviews, etc) What?
  8. 8. 2. How to use it? create a social context to which the personas exist in (an actual physical world). the story-form helps because is easy to understand for everyone. fictional story about the "daily life of" or a sequence of events where personas are the main character of the story. the story should be specific of the events happening that relate to the problems of the primary stakeholder group. based on assumptions and data. Why to use it? 3 basic tools scenario What?
  9. 9. 2. How to use it? Describe the interaction between an individual and the rest of the world (a short event) normally include details about an Interaction represented with a serie of simple steps to achieve a goal (based in the character) (cause-effect scheme) Normally expressed in a 2 columns table: Actor / word. Other special type of Use case are: essential use case (abstract form, describes the essence of the problem) helps to: make problem easier to handle for designers (because brake problems or complicated task into smaller bits) help identify useful levels of design work (the actual low level processes the problem is involved) better understanding of the problem splitting it into small parts (analytical methodology) Why to use it? 3 basic tools use cases What?
  10. 10. 3. Beyond UCD alternatives Same D.Norman has criticized this dominance and proposed as an alternative the Activity Centered Design. ACD explain according to Norman, why so many not UCD products are successful. ACD switch focus from user into activities that were to be performed. Alan Cooper developed other methodology alternative named Goal-Directed Design (GDD) Uses personas and their goals from a business approach. “What do people desire?” / “Of the things people desire, what will sustain a business?” / “Of the things people desire that will also sustain a business, what can we build?” ACD and GDD ACDGDD UCD seems to be the dominant paradigm today, but there is not the only view.
  11. 11. 4. REFERENCES UCD http://en.wikipedia.org/wiki/User-centered_design http://www.usabilityprofessionals.org/usability_resources/about_usability/what_is_ucd.html http://www.w3.org/WAI/redesign/ucd http://www.servicedesigntools.org/tools/ ACD http://www.jnd.org/dn.mss/human-centered_desig.html http://www.jnd.org/dn.mss/activitycentere.html GDD http://www.uie.com/articles/goal_directed_design/ http://www.dubberly.com/articles/alan-cooper-and-the-goal-directed-design-process.html http://www.cooper.com/journal/2008/05/six_sigma_and_goaldirected_des.html Design notes: User Centered Design

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