Task Centered Design Flashcards
Objectives of task centered design
Learn about users’ tasks and capabilities - how size, disabilities, knowledge, etc. may affect how the system is used
Trigger
What prompts the user to start the task
Outcome
How will the user know if the task is complete
Base knowledge
What will the user be expected to know before starting
Task Descriptions/Scenarios
Stories that describe the actual use of the system and description of the person who is using the system
Characteristics of a good task description
Very specific
Describe a complete job, say who users are
Say what to do but not how
Consider information flow
Personas
Synthesized from real user characteristics, but not real people - give names, characteristics, goals, background
Requirement
A statement about an intended product that specifies what it is expected to do
Functional requirement
What the system will do
Non functional requirements
Characteristics and constraints of the design
Levels of interview structure
Unstructured - no predetermined questions, just conversation
Semi-structured - most interviews follow this pattern, the interviewer asks only a few predetermined questions while the rest of the questions are not planned in advance
Structured interview - all questions are predetermined
Double-barreled question
A statement with two questions that can only be answered with one choice
3 stages of task centered design
- Identification - finding people who will use the system
- Requirements - gather requirements
- Design + prototypes
