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The Role of Pre-Attention in UI Design
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The Role of Pre-Attention in UI Design

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Pre-attentive psychology tries to explain how our brains perceive visual information and organise it into meaningful patterns and structures, all in a fraction of a second. Understanding how this …

Pre-attentive psychology tries to explain how our brains perceive visual information and organise it into meaningful patterns and structures, all in a fraction of a second. Understanding how this works gives us crucial building blocks for how to structure user interfaces. This talk will introduce Gestalt psychology and look at some of the Gestalt laws and how they give us guidelines for layout and structure. You probably already do this without realising it but understanding why and how we do it will make us more effective when we come to design (or evaluate) user interfaces!

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  • Daniel Kahneman “Thinking Fast and Slow”
  • Daniel Kahneman “Thinking Fast and Slow”
  • The first serious attempt to understand pattern perception was undertaken by a group of German psychologists who, in 1912, founded what is known as the Gestalt school of psychology.Kurt Koffka– GermanWolfgang Kohler – EstonianMax Wertheimer – CzechWorked together at the University of Berlin in the early 20th centuryGestalt simply means ‘pattern’ in German. The principle maintains that the brain forms groups, patterns and structures before understanding the elements that construct them.This is a fundamental principle in “pre-attentive processing” and these laws easily translate into a set of design principles for information displays.
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    • 1. The Role of Pre-attentiveProcessing in UI DesignStephen Denningstephen@uservision.co.uk@steve_denning(or “What can three German psychologiststeach us about interface design?”)
    • 2. What is pre-attention?Why should we care?How can we apply it?
    • 3. “We thrive in information-thick worldsbecause of our marvellous and everydaycapacities to select, edit, single out, structure,highlight, group, pair, organise, discriminate,distinguish, cluster, aggregate, outline,summarise, enumerate, glean [and]synopsize”Edward Tufte (1990)
    • 4. RegisterPre-attentiveprocessingCognitionWorkingmemoryLong-termmemory
    • 5. Register
    • 6. Register
    • 7. Pre-attentiveprocessingCognitionSystem/Agent 1 System/Agent 2GatherStructurePattern-matchProcessAttributeComputeChoose
    • 8. Pre-attentiveprocessingCognitionSystem/Agent 1 System/Agent 2FastInstinctiveInvoluntaryNo effortSlow(er)ConsideredVoluntaryEffortful
    • 9. Pre-attentiveprocessingCognitionSystem/Agent 1 System/Agent 2
    • 10. TARGETDISTRACTORS
    • 11. Simples! Umm… Argh!
    • 12. KurtKoffkaWolfgangKohlerMaxWertheimer
    • 13. 1. Law of Figure/Ground
    • 14. AmplitudeWavelength(nanometers)Visible Spectrum400 700© Wickens, et al.
    • 15. 2. Law of Similarity
    • 16. 3. Law of Proximity
    • 17. First name:Last name:Street:City:Postcode:Telephone:E-mail address:
    • 18. First name:Last name:Street:City:Postcode:Telephone:E-mail address:
    • 19. 4. Law of Continuation (Alignment)
    • 20. 5. Law of Closure
    • 21. 5. Law of Closure
    • 22. 5. Law of Closure
    • 23. 5. Law of Closure
    • 24. 5. Law of Closure
    • 25. ๏ Symmetry๏ Common fate๏ Connectness๏ Parallelism๏ Common region๏ Past experience๏ Focal point๏ Simplicity
    • 26. So…๏ Maximise use of pre-attentionin design๏ Think structure before content๏ Communicate as much aspossible through shape, colourand layout๏ Combine the laws for maximum effectStephen Denningstephen@uservision.co.uk@steve_denning@uservision
    • 27. CreditsReferences• http://www.flickr.com/photos/orangeacid/234358923/• http://www.csc.ncsu.edu/faculty/healey/PP/• http://www.flickr.com/photos/29317846@N03/2743294768/• http://www.flickr.com/photos/mr_t_in_dc/3756880888/• http://www.sxc.hu/photo/883166• http://jtl.deviantart.com/art/White-Vision-1104943• http://www.cledsonsoares.blogspot.com• http://www.brainconnection.com• D. Kahneman, “Thinking Fast & Slow” (2012)• C. Ware, “Information Visualization: Perception forDesign” (2004)• C. Wickens, S. Gordon Becker, Y Liu & J Lee, “Introductionto Human Factors Engineering” (2003)Stephen Denningstephen@uservision.co.uk@steve_denning@uservisionExamples• www.apple.com• www.amazon.com• www.ba.com• www.play.com• www.gov.uk