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©2011 1 www.id-book.com

Identifying needs and establishing

requirements

Chapter 10

Anna Loparev Intro HCI

University of Rochester

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©2011

Understand

2 www.id-book.com

What?

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Produce

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What?

©2011 4 www.id-book.com, https://secure.flickr.com/photos/chokola/1229450683/

How?

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©2011 7 www.id-book.com, http://www.bigshinyrobot.com/reviews/archives/25540

Requirements: Functional

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Requirements: Data

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Requirements: Environment

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Requirements: Users

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©2011 11 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

Requirements: Users (Persona)

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Requirements: Users (Persona)

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©2011 13 www.id-book.com, http://kotaku.com/5650591/then-why-we-still-got-ewoks

Requirements: Users (Persona)

©2011 14 www.id-book.com, http://simplicitymom.blogspot.com/2011/10/fishing-for-wookie.html

Requirements: Users (Persona)

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©2011 15 www.id-book.com, All from the previous couple of slides

Requirements: Users (Persona)

©2011

Effectiveness

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Requirements: Usability Goals

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©2011 17 www.id-book.com, http://blogs.unity3d.com/2009/07/22/unity-summer-of-code-takes-off/

Requirements: Usability Goals

Efficiency

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Requirements: Usability Goals

www.id-book.com, http://www.bigshinyrobot.com/reviews/archives/25540

EJECT

Safety

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©2011 19

Requirements: Usability Goals

www.id-book.com

Utility

©2011 20

Requirements: Usability Goals

www.id-book.com, http://www.saffronwrites.com/?cat=5

Learnability

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Requirements: Usability Goals

www.id-book.com, http://www.saffronwrites.com/?cat=5

Memorability

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Requirements: UX Goals

www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

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©2011 23 www.id-book.com

ID cycle of life

Design

alternatives

Establish

requirements

Evaluate

Prototype

©2011

24 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Data gathering: Interviews

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©2011 25 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

Data gathering: Focus groups

©2011 26 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://studentweb.cortland.edu/Karen.Jordan/miniproj3/election_questionnaire.html

Data gathering: Questionnaires

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©2011 27 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper,

Data gathering: Direct observation

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Data gathering: Indirect observation

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Data gathering: Studying documentation

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www.id-book.com, http://starwars.wikia.com/wiki/All_Terrain_Tactical_Enforcer_%28cargo_transport%29, http://starwars.wikia.com/wiki/All_Terrain_Scout_Transport, http://starwars.wikia.com/wiki/All_Terrain_Personal_Transport

Data gathering: Researching similar products

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©2011 31 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

Data gathering: Contextual inquiry

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Contextual inquiry: Context

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Contextual inquiry: Partnership

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Contextual inquiry: Interpretation

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Contextual inquiry: Focus

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Data gathering guidelines

Involve all users

www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://kotaku.com/5650591/then-why-we-still-got-ewoks, http://simplicitymom.blogspot.com/2011/10/fishing-for-wookie.html

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©2011 37

Data gathering guidelines

More than one representative

www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://kotaku.com/5650591/then-why-we-still-got-ewoks, http://simplicitymom.blogspot.com/2011/10/fishing-for-wookie.html

©2011 38 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Data gathering guidelines

Props

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©2011 39

Data gathering challenges

Identifying ALL users

www.id-book.com, http://mariostoys.blogspot.com/2009/09/clone-madness.html http://starwars.wikia.com/wiki/Stormtrooper, http://kotaku.com/5650591/then-why-we-still-got-ewoks, http://simplicitymom.blogspot.com/2011/10/fishing-for-wookie.html

©2011 40 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

Data gathering challenges

Communication

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©2011 41 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper

Data gathering challenges

Domain knowledge

Dingo

©2011 42 www.id-book.com, http://www.fightersgeneration.com/characters4/vader.html

Data gathering challenges

Availability of key people

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©2011 43 www.id-book.com, http://www.ironicsans.com/2008/09/in_a_political_campaign_far_far_away.html

Data gathering challenges

Politics

©2011 44

Data gathering challenges

User group dominance

www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://kotaku.com/5650591/then-why-we-still-got-ewoks, http://simplicitymom.blogspot.com/2011/10/fishing-for-wookie.html

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©2011 45 www.id-book.com, https://store.stardock.com/product/ESD-WC-50-1617 http://entertainment.nbcnews.com/_news/2013/01/16/16544407-empire-strikes-back-with-response-to-death-star-petition?lite

Data gathering challenges

Econ and business changes

©2011 46 www.id-book.com, http://www.bigshinyrobot.com/reviews/archives/25540

Brainstorming

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©2011 47 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Task description: Scenarios

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Task description: Use cases

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©2011 50 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Task description: Essential use cases

©2011 52 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Task analysis

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©2011 53 www.id-book.com, http://starwars.wikia.com/wiki/Stormtrooper, http://www.bigshinyrobot.com/reviews/archives/25540

Hierarchical Task analysis