The document discusses using human factors research to influence future website usability requirements. It describes measuring cognitive factors in users like fluid intelligence, processing speed, and memory when interacting with websites. Website factors like scrolling, links, forms and page layout are also observed. The results of these measurements are then used to test hypotheses about the impact of cognitive abilities on information retrieval tasks for older and younger adults. Statistical analysis methods like multiple regression are used to analyze the data and relationships between human and website factors. The goal is to better understand these relationships and inform future website design to be more usable for all users.
Cognitive Usability: Using Human Factors to Influence Future Online Usability Requirements
1. Cognitive
Usability Using Human Factors to
Michael Crabb
Vicki L. Hanson Influence Future Online
Andy Cobley Usability Requirements
Friday, 26 October 12
2. Cognitive
Usability Using Human Factors to
Michael Crabb
Vicki L. Hanson Influence Future Online
Andy Cobley Usability Requirements
Friday, 26 October 12
3. ?
?
?
HUMAN
smartphone
Printer
tablet
?
? ?
?
?
MAC
Calculator
Computer Browse
Move
Mouse
Keyboard
PC Monitor Touch
Interaction
write
Type
Swipe Adjust
Friday, 26 October 12
4. Auditory Ability
Internet Confidence
Internet Usage
Crystallised Intelligence
HUMAN
Cognitive Long Term Memory
Psychology Processing Speed
Fluid Intelligence
Short Term
Visual Processing
Memory
Reading Ability
Writing Ability
Friday, 26 October 12
5. Fluid Intelligence Long Term Memory
Internet Usage
Processing Speed Internet Confidence
Short Term Memory
Friday, 26 October 12
7. Test Test Test
x y z
Test Test Test
a b c
Test Test Test
j k l
Test Test Test
1 2 3
Friday, 26 October 12
8. Letter Sets
Odd One Out
Fluid Intelligence
I BCDE FGHI JKLM PRST VWXY
II CERT KMTV FHXZ BODQ HJPR
III KGDB DFIM KIFB HJMQ LHEC
Friday, 26 October 12
9. Meaningful Memory
Remembering Connections
Long Term Memory
hammer excellent
rock rough
roof flat
Friday, 26 October 12
10. Meaningful Memory
Remembering Connections
Long Term Memory
rock
dirt smooth flat jagged large
roof
level rough sloping leaky sturdy
hammer
big rough good small heavy
Friday, 26 October 12
11. Gf Gf Gf
IC Ps IC Ps IC Ps
IU Gsm IU Gsm IU Gsm
Glr Glr Glr
participant x participant Y participant z
Friday, 26 October 12
13. government banking local attractions
shopping news medical
Friday, 26 October 12
14. measurements
observed
Human Factors website Factors
✦Fluid Intelligence ✦Scrolling and Paging
✦Processing Speed ✦Links
✦Short Term Memory ✦Forms
✦Long Term Memory ✦Writing Content
✦Internet Confidence ✦Page Layout
✦Internet Usage ✦Searching
✦Demographics ✦Headings
✦Images
✦Navigation
✦Text Appearance
Friday, 26 October 12
15. measurements
observed
Human Factors humans observing websites
✦Fluid Intelligence ✦Disorientation Questions
✦Processing Speed ✦Disorientation (Reversed) Questions
✦Short Term Memory ✦Ease of Use Questions
✦Long Term Memory
✦Internet Confidence
✦Internet Usage
✦Demographics
website Factors websites observing humans
✦Scrolling and Paging ✦Pages Visited
✦Links ✦Path Through Website
✦Forms ✦Time on Page
✦WritingContent ✦Links Selected
✦Page Layout ✦IR Question Refresh
✦Searching
✦Headings
✦Images
✦Navigation
✦Text Appearance
Friday, 26 October 12
16. testing
hypothesis
Cognitive factors have no impact on an individuals ability to
H0 : perform Information Retrieval tasks
Older and Younger adults use the same cognitive factors
H0 : when performing Information Retrieval tasks
Cognitive factors have a negative impact on an individuals
H0 : ability to perform Information Retrieval tasks
Friday, 26 October 12
19. Multiple Regression
Cognitive factors have no impact on an individuals ability
H0 : Younger and Older Adults
to perform Information Retrieval tasks
45.1%
Cognitive Factors
32.5%
Tech Usage 31.0%
Cognitive Factors
10.4% 9.7%
Age Tech Usage
0.1%
Age
s 1
s2 s3 s3 s2 s 1
Friday, 26 October 12
20. Multiple Regression
Cognitive factors have a negative impact on an individuals
Older and Younger adults use the same cognitive factors
H0 : Younger and Older Adults
abilityperforming Information Retrieval tasks
when to perform Information Retrieval tasks
older Adults Younger Adults
Internet Confidence
Short Term Memory
Disorientation
Disorientation
Fluid Intelligence
Internet Confidence
Fluid Intelligence
Short Term
Processing Speed Memory
Long Term Memory
Internet Usage Processing Speed
Friday, 26 October 12
21. whats
next?
Human Factors humans observing websites
✦Fluid Intelligence ✦Disorientation Questions
✦Processing Speed ✦Disorientation (Reversed) Questions
✦Short Term Memory ✦Ease of Use Questions
✦Long Term Memory
✦Internet Confidence
✦Internet Usage
✦Demographics
website Factors websites observing humans
✦Scrolling and Paging ✦Pages Visited
✦Links ✦Path Through Website
✦Forms ✦Time on Page
✦WritingContent ✦Links Selected
✦Page Layout ✦IR Question Refresh
✦Searching
✦Headings
✦Images
✦Navigation
✦Text Appearance
Friday, 26 October 12