Abstract
Introduction
Experiment
Results
Discussion
Conclusions
Acknowledgements
References
Appendices
Credits
Feedback
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Comparison of Telephone Menu Interfaces
Results
Statistical Data
Average Performance Times
Chart 1.1
This chart shows the average performance times for both system, Shoutmail and
Coolemail. The overall performance times shows no real statistical significance between
the two systems. Surprisingly, Coolemail seems to have a performance preference with the
female subjects.
User Satisfaction Ratings
The survey consisted of 6 questions. They all had a
rating from 1 - 9, where the number was related to different opinions about the systems.
| Phone Email system: | ||
| 1 | Frustrating (1) | Satisfying (9) |
| 2 | Difficult (1) | Easy (9) |
| 3 | Rigid (1) | Flexible (9) |
| Finding the specified email: | ||
| 4 | Difficult (1) | Easy (9) |
| 5 | Slow (1) | Fast (9) |
| Understanding the email message: | ||
| 6 | Difficult (1) | Easy (9) |
Chart 1.2
Chart 1.3
The survey revealed statistically significance for question 3, which relates
to the systems phone menu. Both male and female subjects found Shoutmail’s phone menu
system to be more flexible than Coolemail’s phone menu system. When looking at the
menu system for Shoutmail, the differences are quite clear. Shoutmail offers more to the
user than Coolemail. A quick sample scenario of a login at Shoutmail and Coolemail will
look like this:
Shoutmail:
Female computerized voice:
"Press 1 for email; Press 2 for news; Press 3 for weather; Press 4 for financial
news; Press 5 for sport; Press 6 for entertainment news;quot;.
"Click 0 at all times to repeat options".
1 selected:
"Press 1 to hear new messages; 2 to send a message; 3 to hear other message; 9 for
more options".
1 selected:
"Press 1 to hear the message; 2 to reply; 3 for next; 4 to delete; 5 to store; or 9
for more options".
Coolemail:
Female computerized voice:
"Hello userID"
A commercial is played
"You have new messages for message center"
"press 1; to change personal options press 8"
(Options are repeated automatically)
1 selected:
(male voice speaking the message)
"Message from sender subject subject"
" Listen to this message press 1; Skip message press #; To delete message press
7"
This quick scenario shows the main features of the system, and how the menu system is
designed with relations to hierarchical
levels. Shoutmail has a more flexible system, which also offers more advanced features
such as News and Weather. Shoutmail's menu system requires 3 levels of traversal to listen
to a message, while Coolemail has less options, but requires only 2 levels of traversal.
Means and Standard Deviations
Above tables show the results of t-test analysis. The analysis was performed
using Microsoft Excel 97. Click here for Raw Data in html or in Excel
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