Human Computer Interaction - PowerPoint
13 important questions on Human Computer Interaction - PowerPoint
What are the different levels of HCI?
- Utility: useful, meets needs
- Usability: able to use easily
- Desirability: like the looks and feels
- Brand Experience: overall feeling of the brand/prodcut feels good
What are dispays and design principles?
"Human-made artifacts designed to support the perception of relevant system variables and facilitate the further processing of that information."
Design principles:
- Know
- Relate to example cases
- Basis for improvement
- Alert, labels and icons
In what circumstances is the product used?
- Controls
- Layout
- Environment
- Processes
- Monitoring
- Positioning
- Strengths
- Weaknesses
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
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What are perceptual design principles of displays?
P1. Legibility (readable text)
P2. Absolute judgement (system status only a redish dot, and orange means this, and lighter means that, use labels)
P3. Top down expectation (A I3 C, 12 I3, 14)
P4. Redundancy gain (traffic lights)
P5. Discriminability (how easy to discriminate, Wabor's law about coins)
What are the mental model design principles of displays?
P6. Pictorial realism (how you interpret what you see, the louder the volume the higher the gauge is)
P7. Moving part (reverse, pook achteruit)
What are the attention design principles of displays?
P8. Information access (put relevant info together)
P9. Proximity compatibility (Gestalt, see things as a group)
P10. Multiple resources (Google maps with visual and voice)
What are the memory design principles of displays?
P11. Knowledge in the world (command: open file, toolbar open file, don't have to remember)
P12. Predictions (buienalarm)
P12. Consistency (with other websites, people spend more time on websites other than yours)
What are types of elements in the display?
- Warnings
- Cautions
- Advisories
- Visibility
- Discriminability
- Meaningfulness
What are the usability goals?
- Accuracy and completeness with which users achieve specified tasks
- Resources expended in relation to the accuracy and completeness with which users achieve goals
- Avoid danger of carrying out unwanted actions accidently; means of recovery when they happen
- Right functionality?
- Easy to learn, easy to master
- Retention over time
What is an iterative cycle of system development?
Understanding
- Design
- Evaluation
- Repeat
What are the seven stages of action (Norman)?
- Goals
- intentions
- Action specification
- Interface mechanism
Evaluation bridge
- Interface display
- Interpretation
- Evaluation
What is Normans Mental Model?
Use metaphores (floppy disk)
What are the HCI guidelines?
Match real world
- Floppy disk, print icon
- Consistent with other sites
- "Loading", Google bar, can't click on images bc you are already there
- "Are you sure you want to remove file?", close something, stop something
- Allow them to select (instead of typing) Redo, undo
- Explicit thing you can go to
- CTRL+S, accelerators, shortcuts
- Easy and nice to use
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
