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How to design interfaces for choice


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Guidelines to improve the choice in menus, catalogs and interfaces in general.
Talk at UDC Seminar 2013, Classification & Visualization.
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Published in: Design, Education, News & Politics

How to design interfaces for choice

  1. 1. How to design interfaces for choice Luca Rosati ⋅ @lucarosati Hick-Hyman law and classification
  2. 2. I want a pair of jeans, 32-28. Do you want them slim fit, easy fit, relaxed fit, baggy, or extra baggy? Stonewashed, acid-washed, or distressed? Bottom-fly or zipper-fly? Faded or regular?
  3. 3. Hick-Hyman law
  4. 4. Time T = a + b log2 (n + 1) N. of options
  5. 5. linear sub-linear
  6. 6. “La fuga” by Donnafugata! A great red for a green pepper fillet.
  7. 7. I choose 1 time from a 8 items menu: I choose 2 times from a 4 items menu: a + b log2 8 = a + 3b 2(a + b log2 4) = 2a + 4b a + 3b < 2a + 4b
  8. 8. In other words... information overload & paradox of choice are more a quality issue (how options are presented) than a quantity issue (n. of information)
  9. 9. Hick-Hyman law and classification
  10. 10. The sequence of the classes in an array should be helpful to the purpose of those for whom it is intended
 – Ranganathan
  11. 11. Strategies to reduce the paradox of choice
  12. 12. 1. Split
  13. 13. 2. Customize
  14. 14. 3. Info scent
  15. 15. Let’s recap
  16. 16. the paradox of choice is linked to the consistency issue of a classification wide structures work better than deep ones – but if and only if consistency is on otherwise split, customize or provide information scent
  17. 17. Credits This work is the prosecution of a research conducted with Andrea Resmini, published in some papers and merged in the book Pervasive Information Architecture.
  18. 18. How to design interfaces for choice Luca Rosati ⋅ @lucarosati Hick-Hyman law and classification