QuitItHelping you conquer cravings

Presenter: Carol Allen

CSE440 Human Computer Interaction

Autumn 2007

Problem:• Many people want to make

healthier eating choices

• Their overall health goals are often derailed by cravings

• Cravings strike anywhere, anytime

QuitIt’s Solution

• An avenue of support that stays with you– QuitIt goes where your phone goes

• Motivate! – Provide a framework for goal setting and

tracking

• Connect & Inspire! – Goals work best when you share them

with others– Connect users with a community of

others who share similar struggles and successes

Video Time!

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Three Tasks

• Testing & development revolved around 3 primary tasks

• Follow from user interviews

• Designed to capture user behavior

Task 1: Initialize & Set a Goal

• Bob just installed QuitIt on his phone

• He navigates through the orientation (first-time use experience) screens and sets up his first goal

Task 2: Report a Craving

• Bob experiences a serious craving and uses QuitIt to reach out to others for help

Task 3: Reply to a Message

• Julia sees Bob’s message and writes him a helpful and supportive reply

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Design Evolution: Step 1

Contextual interviews & experience sampling revealed:

– Goal setting works

– Support from others desired, including unsolicited msgs

– Association between emotional stress/crisis and indulging

– Desire for expression of emotional crisis

Design Evolution: Step 2

• paper prototype

Design Evolution: Step 2

• Lessons learned:

– Up-front value proposition

– Put settings/options in context of use

– Visual regrouping of buttons

– Draw users with experience funnel

Changes to paper prototype on-the-fly

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Web-based interactive UI

• Created with: AJAX and Ruby on Rails

• Most functionality implemented, including messaging system

• Persistent data between logins

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Missing from interactive UI

– Smart backend message routing & goal matching

– Removal of flagged messages

– Profile & Your Progress screens

– Bug fixes

Today I will talk about:

• Tasks

• Design evolution

• Current user interface

• System demo

• Heuristic evaluation results

Key Heuristic Evaluation Results

– Create a Personal Log rather than mixing them with Sent messages

– Enable consistent Back/Cancel/Home navigation

– Allow undo on goal tracking functions– When replying to messages, show original

message for context– Fix message delete functions

In Summary

QuitIt helps you conquer cravings through

• Goal setting

• Goal tracking

• Crisis outreach

• Community support

Thank you!

QuitIt Team: With the Guidance of:Carol Allen Prof. James Landay

David Balatero T. Scott Saponas

Alex Tibbetts

Websitehttp://www.cs.washington.edu/education/courses/cse440/07au/

project_files/quitit/