developed by tim bell department of computer science and software engineering university of...
TRANSCRIPT
![Page 1: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/1.jpg)
Developed by Tim BellDepartment of Computer Science and Software EngineeringUniversity of [email protected]
Human Computer Interaction
An introduction to HCI Heuristics for NZQA achievement standard AS91371 (2.44)
Licensed under a Creative Commons Attribution-Noncommercial-ShareAlike 3.0 License
![Page 2: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/2.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
References
Usability Engineering (Jakob Nielson)
Designing with the mind in mind (Johnson)
![Page 3: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/3.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
HCI perspective on a system
UserDevice
interfaceSystem
![Page 4: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/4.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Are users dummies?
![Page 5: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/5.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Human-computer interaction, usability
![Page 6: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/6.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Heuristics (Nielson)
![Page 7: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/7.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Examples illustrating heuristics
![Page 8: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/8.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Visibility of system status
The system should always keep users informed about what is going on, through appropriate feedback within reasonable time.
![Page 9: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/9.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Feedback – reasonable time
1/10 second: instant
1 second: interactive
10 seconds: need an indicator
![Page 10: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/10.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Match between system and real world
The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.
![Page 11: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/11.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Match between system and real world
![Page 12: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/12.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Match between system and real world
![Page 13: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/13.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
User control and freedom
Users often choose system functions by mistake and will need a clearly marked "emergency exit" to leave the unwanted state without having to go through an extended dialogue. Support undo and redo.
![Page 14: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/14.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
User control and freedom
![Page 15: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/15.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
User control and freedom
![Page 16: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/16.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Consistency and standards
Users should not have to wonder whether different words, situations, or actions mean the same thing. Follow platform conventions.
![Page 17: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/17.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Error prevention Even better than good
error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.
![Page 18: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/18.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Error prevention
![Page 19: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/19.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Error prevention
![Page 20: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/20.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Error prevention
![Page 21: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/21.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Combinations of issues
Error prevention
Match between system and real world
Consistency
![Page 22: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/22.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Recognition rather than recall Minimize the user's memory load by
making objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another. Instructions for use of the system should be visible or easily retrievable whenever appropriate.
![Page 23: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/23.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Flexibility and efficiency of use
Accelerators -- unseen by the novice user -- may often speed up the interaction for the expert user such that the system can cater to both inexperienced and experienced users. Allow users to tailor frequent actions.
![Page 24: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/24.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Aesthetic and minimalist design
Dialogues should not contain information which is irrelevant or rarely needed. Every extra unit of information in a dialogue competes with the relevant units of information and diminishes their relative visibility
![Page 25: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/25.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help users recognize, diagnose, and recover from errors
Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively suggest a solution.
![Page 26: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/26.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help users recognize, diagnose, and recover from errors
![Page 27: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/27.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help users recognize, diagnose, and recover from errors
![Page 28: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/28.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help users recognize, diagnose, and recover from errors
![Page 29: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/29.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help users recognize, diagnose, and recover from errors
![Page 30: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/30.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help and documentation
Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large.
![Page 31: Developed by Tim Bell Department of Computer Science and Software Engineering University of Canterbury tim.bell@canterbury.ac.nz Human Computer Interaction](https://reader035.vdocuments.us/reader035/viewer/2022062722/56649f2f5503460f94c49d5b/html5/thumbnails/31.jpg)
HC
I fo
r le
vel 2
Com
pute
r Sci
ence
Help and documentation