V M O D

1
V M O D

• Video Music On Demand

Palm OS Prototype User Testing Chen,
Alvin Chiang, Marvin Khoshoo, Sid Schneider,
Dan Volkert, Todd
2
VMOD User Testing

• Product Overview
• Changes since Heuristic Evaluation
• Demonstration
• Usability Experiment

3
Product Overview

• Problem
• Radio
• CD Player
• Tape Player
• Proposed Solution - VMOD
• Feature Descriptions

4
Project Origins

• CD Player Interface
• WinAmp Terminology
• Minimal Screens
• Configurable

5
Design Evolution

• Expanded Functionality
• Music Videos
• Multi-user Networking
• Expanded Search

6
Heuristic Evaluation

• No Level 4 Problems
• Request List/SmartStation Problems
• No Dedicate From Main
• Labels

7
Palm OS Prototype Changes

• Separation of Features
• Reinvention of Playlists
• Feature Visibility Duplication
• Help System

8
VMOD Main Screen
Visual Basic
Palm OS
9
VMOD Playlist Screen
Visual Basic
Palm OS
10
VMOD Dedication Screen
Visual Basic
Palm OS
11
Palm OS PrototypeDemonstration
12
Palm OS PrototypeUser Testing

• Methodology
• Results
• Conclusions

13
Test Methodology

• Organization
• Testing
• Timing
• Debriefing

14
Test Methodology Users

• Three College-Level Users
• Varying Background
• Varying Computer Experience
• Basic
• Proficient
• Advanced

15
Test Methodology Tasks

• Three Tasks
• Broad Functionality Coverage
• Increasing Difficulty Level

16
Experimental Results

• Main Screen
• Genre vs. Find Songs
• Video Mode
• Editor Screen
• Load and Play Buttons
• Dedication Screen
• Ambiguous Buttons

17
Main Screen

• Genre vs. Find Songs
• Video Mode
• Cluttered Screen

18
Editor Screen

• Save Button
• Load vs. Play Buttons
• Popup Menu

19
Dedication Screen

• Record Button
• Add/Remove Buttons
• Send Button

20
Help System

• Not Useful
• Not Extensive

21
Conclusions

• Final Changes
• Bug Fixes
• Q A