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Chapter 5a: Mobile Application Development - Coggle Diagram
Chapter 5a: Mobile Application Development
User Centered Design (USD)
User-Centered Design Process
User Requirement Analysis
Conceptual Design
Design & Implementation
Launch & Maintenance
AKA human-centered design (HCD) process
Involve a multi-disciplinary activity
Approach to interactive system development
Focuses specifically on making systems usable.
GOAL
to make products/applications which have very high usability
General phases of UCD process:
Specify context of use:
the users
Specify requirements:
granular requirement
Create design solutions and development:
iterative (supporting tools)
Evaluate product:
various testing approaches
App Development... More than coding
Observation
Ideation
Design
Build
Test
Design Inspiration
Learning from "people"
Manager
ID- Instructional Designer
Usability Evaluation
Conduct usability evaluation on the final design.
Work with the design and development team to improve the product based on evaluation results.
Repeat this process (production iteration) until the organisational/business goals are met.
Methods
Heuristics evaluation
usability inspection technique
Expert are guided by a set of usability principles known as heuristics
Then, experts evaluate whether user-interface elements (dialog boxes, menus, etc.) confirm to the principles.
Cognitive walkthrough
Step 1. Identify task
Step 2. Identify action sequence for task
Step 3. Perform walkthrough
Pluralistic Walkthrough / Design review
Variation on the cognitive walkthrough theme.
Performed by a carefully managed team
The panel of experts begin by working separately
Then there is managed discussion that leads to agreed decisions.
The approach lends itself well to participatory design.
Formative & Summative - the evaluation
Formative
Problem-finding during development
Summative
Measure against specific goals when development is complete