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Human–Computer Interaction post-millennial models

Human–Computer Interaction post-millennial models. Alan Dix alan@hcibook.com http://www.hcibook.com/alan/teaching/rome2003/. Week 1: 19–23 May 2003 basics of HCI and cognition Tues 20 th am and pm lightening introduction vision 3D and colour time human context strand

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Human–Computer Interaction post-millennial models

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  1. Human–Computer Interactionpost-millennial models Alan Dix alan@hcibook.com http://www.hcibook.com/alan/teaching/rome2003/

  2. 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 course outline

  3. scenarios • stories for design • communicate with others • validate other models • understand dynamics • linearity • time is linear - our lives are linear • but don’t show alternatives

  4. scenarios … • what will users want to do? • step-by-step walkthrough • what can they see (sketches, screen shots) • what do they do (keyboard, mouse etc.) • what are they thinking? • use and reuse throughout design

  5. movie player Brian would like to see the new film “Moments of Significance” and wants to invite Alison, but he knows she doesn’t like “arty” films. He decides to take a look at it to see if she would like it and so connects to one of the movie sharing networks. He uses his work machine as it has a higher bandwidth connection, but feels a bit guilty. He knows he will be getting an illegal copy of the film, but decides it is OK as he is intending to go to the cinema to watch it. After it downloads to his machine he takes out his new personal movie player. He presses the ‘menu’ button and on the small LCD screen he scrolls using the arrow keys to ‘bluetooth connect’ and presses the select button. On his computer the movie download program now has an icon showing that it has recognised a compatible device and he drags the icon of the film over the icon for the player. On the player the LCD screen says “downloading now”, a percent done indicator and small whirling icon. … … …

  6. play act … • mock up device • pretend you are doing it swiss army knife …

  7. persona • description of an ‘example’ user • not necessarily a real person • use as surrogate user • what would Betty think • details matter • makes her ‘real’

  8. example persona Betty is 37 years old, She has been Warehouse Manager for five years and worked for Simpkins Brothers Engineering for twelve years. She didn’t go to university, but has studied in her evenings for a business diploma. She has two children aged 15 and 7 and does not like to work late. She did part of an introductory in-house computer course some years ago, but it was interrupted when she was promoted and could no longer afford to take the time. Her vision is perfect, but her right-hand movement is slightly restricted following an industrial accident 3 years ago. She is enthusiastic about her work and is happy to delegate responsibility and take suggestions from her staff. However, she does feel threatened by the introduction of yet another new computer system (the third in her time at SBE).

  9. NUCLEAR REACTOR MAIN CONTROL PANEL Emergency Shutdown Emergency Confirm Reactor Targets LOTS OF OTHER CONTROLS 7934 CONFIRM IMMEDIATE SHUTDOWN COMMENCE Pressure 325 Temp Alarm Control alarm control panel CANCEL 10256 Flow Rate + reactor targets information panel – emergency shutdown panel manual override panel 7 8 9 keypad for manual override 4 5 6 emergency confirm panel 0 1 2 3 Manual Override 6000 Target Pressure SET

  10. Emergency Scenario Jenny, the Nuclear Power Plant operator has normal sight and no physical or perceptual impairments. Her shift started at 11pm and it is now 5am in the morning. So far the plant has been operating within normal parameters and the current alarm state is therefore green 1 Jenny notices the core reaction rate has risen very rapidly 2. she realises she must immediately change the reactor target pressure to correct this 3. she goes to the Alarm Control Panel on the far right of the main reactor control panel and presses '+' twice (as it is starting off in green state) 4. the Emergency Confirm button glows red 5. she moves across to the Manual Override panel on the far left of the main reactor control panel … … …

  11. depths • explore interaction • what happens when • explore cognition • what are the users thinking • explore architecture • what is happening inside

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