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C o n s i s t e n c y How consistency can inspire users to stay longer on your App and to explore more ID for Devz at Hacker Dojo Nilo Sarraf November 2010

Why Consistency is Gooood Less cognitive efforts on learning your App Less cognitive resources wasted Increased positive user experience Happy users! Users are more likely to come back Users will spend more time ‘exploring’ your App

Two Types of Consistencies Internal Consistency - Within you App Two identical elements have the same behaviors and consequences Internal knowledge within the App External Consistency - Without you App Elements in your App follow the ‘conventional’ user interface norms Internal knowledge of the App in comparison to the external knowledge Forward Transfer

Internal Consistency When two identical elements have the same behaviors and consequences Internal knowledge within the App Limited user cognitive resources is spent Learning processes minimized Users more willing to explore your App You are using what users already know Predictable and learnable Apps More cognitive resources is spent on exploring your App, as opposed to learning at the element levels Happy users who keep consistently coming back! NOTE: More important to implement Internal rather than External Consistency

Consistent Internal Behavior Customization Google Chrome behaves the same even if the user is allowed to customize

No Internal Consistency? Users will spend time and energy on learning, as opposed to exploring your App Frustrated users Higher percentage of users are likely to leave your App within amount of short time

Can You Identify the Links? Links Link Links Links

“ Consistency makes the interface familiar and predictable.” ( The Windows User Interface Guidelines for Software Design , Microsoft Press)

These Two Lists, on the Same CD APP , Operate Totally Differently Play List CD Track List

External Consistency To be consistent with the ‘conventional norms’ Forward Transfer Sounds too dry and not as creative? The reality is that users want to be able to recognize various element on your App Users prefer to explore Apps rather than trying to learn them all over again

Identifying Areas Where You Can Be Consistent Elements Design Content Interaction

Elements Footer, side bar, and navigation Changed look and feel of the site But the elements are ALWAYS consistently on the same spot

Design “ Its OK to experiment but keep the design consistent.” Users remember details Allow for customization?

Consistent Design Consistent UI Consistent look and feel across platforms iPhone App Android App

Content Consistent in tone, mood, quality, and quantity Users get used to the tone Funny, laid back, adventures, fantasy, serious, playful… You choose! Keep the same tense: past or present Users get used to the posting ‘schedule’

Consistent Content Hot Devz Consistent tone, mood, quantity, quality, and scheduling

Interaction Users choose to interact with your App differently but the interaction still needs to be consistent Links open in new or existing windows Displaying pictures Drag and drops Radio buttons that work as check boxes

Consistent Interaction Tony’s tips for iPhone users Follows Safari’s bookmark model Forward Transfer Tony’s App Safari’s App

Finally: Just Remember These! It’s OK to make your own controls but don’t have them behave differently than the conventional existing controls If something looks the SAME, it should behave the SAME If something looks DIFFERENT, it should behave DIFFERENT

References UI Usability http://claudiorikower.com/blog/2009/12/usability-principles-consistency-and-standards/ UX Booth http://www. uxbooth .com/blog/consistency-key-to-a-better-user-experience/ Pure Caffeine http://www.purecaffeine.com/2009/12/consistency-youre-just-being-obsessive-compulsive/ iPhone App UI http://www.flickr.com/photos/papernapkin/sets/72157622312444768/

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Consistency - ID for Devz at Hacker Dojo

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Consistency - ID for Devz at Hacker Dojo