1. Human–Computer Interaction post-millennial models
Alan Dix

2. course outline Week 1: 19–23 May 2003 basics of HCI and cognition
Tues 20th am and pm
lightening introduction
vision 3D and colour
time
human context strand
Wed 21st am, Thurs 22nd pm and Fri 23rd pm
scenarios
task analysis
rich work ecologies
understanding interaction
Week 2: 26–30 May 2003
system definition strand
Mon 26th pm and Tues 27th am and pm
understanding state
physical–logical mappings
continuous interaction and time
formal interaction modelling
at the edge
Thurs 29th am and pm
designing experience
innovation and creativity

3. designing for value
people use something ONLY IF it has perceived value AND value exceeds cost
BUT NOTE
exceptions (e.g. habit)
value NOT necessarily personal gain or money

4. weighing up value value cost helps me get my work done fun
good for others
cost
download time
money £, $, €
learning effort

5. if you want someone to do something …
make it easy for them!
understand their values

6. organisational design
coercion
tell them what to do!
value = keep your job
enculturation
explain corporate values
establish support (e.g share options)
emergence
design process so that individuals value  organisational value

7. discounted future in economics Net Present Value:
discount by (1+rate)years to wait
in life people heavily discount
future value and future cost
hence resistance to learning
need low barriers and high perceived present value

8. for groups network effects critical mass
value of PowerPoint for ME is higher if YOU have it too
critical mass
reduce initial cost
increase initial value
find cliques

9. lattice of value two groups (example): each need value on their own
developers
users
each need value on their own
otherwise initial use
need more value for both
to encourage growth

10. designing experience transferring between media
deconstructing experience
reconstructing experience

11. the cursed animosity of inanimate objects
john ruskin
the cursed animosity of inanimate objects

12. changing media
original page design

13. changing media original page design for the web? straight lines OK
crossing hard

14. understand the effect surface elements experienced effects strong box
single thick diagonal
actual crossing
experienced effects
breaking boundaries
dynamism by crossing

15. redesign

16. understand the effect original image new image surface elements
strong box
single thick diagonal
several thin diagonals
actual crossing
not present
experienced effects
breaking boundaries
gestalt feeling of boundary crossing
dynamism by crossing
dynamism by gestalt crossing plus multiple lines suggest movement