Talks and Poster Presentations (with Proceedings-Entry):

J.-N. Voigt-Antons, T. Hoßfeld, S. Egger-Lampl, R. Schatz, S. Möller:
"User Experience of Web Browsing - The Relationship of Usability and Quality of Experience";
Talk: 10th International Conference on Quality of Multimedia Experience (QoMEX 2018), Sardinia, Italy; 05-29-2018 - 06-01-2018; in: "2018 Tenth International Conference on Quality of Multimedia Experience", IEEE, (2018), ISBN: 978-1-5386-2604-7.



English abstract:
The experience of web services depends on multiple
factors such as the usability of the service itself as well as
influences on Quality of Experience (QoE) like waiting times.
Existing studies so far have investigated both experimental factors
(usability and QoE) in isolation, thus it is not possible to
investigate dependencies between the two. In this study, we
manipulated the usability and QoE of a news web page in
the same experiment. Participants had to solve 9 tasks (three
usability level and three QoE level, all combinations). Data (N=44)
from two different sessions with different QoE manipulations
were recorded: Simulation of initial page display delay via 1)
a complete overlay and 2) a semi-transparent overlay. Our
preliminary results show that the usability manipulation resulted
in significant effects along multiple dimensions (QoE, aesthetic,
and usability). Furthermore, also the implementation of the QoE
manipulation had an effect on, e.g., performance parameters.
Surprisingly, our results reveal that participants seem to be
unable to rate the constructs usability and QoE independently
from each other. Even after adding pronounced explanations of
the constructs to the introductory phase of the second session
of the experiment, the results still show a strong correlation
between the two constructs. We thus recommend for similar
future experiments to check beforehand whether Quality of
Experience and Usability can be reliably judged and distinguished
by naive participants.

Keywords:
Web QoE, Usability, Subjective Testing

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