Naim Zierau
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Dr.
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Zierau
First name
Naim
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naim.zierau@unisg.ch
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+41 71 224 3237

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  • Publication
    Designing Conversational Evaluation Tools: A Comparison of Text and Voice Modalities to Improve Response Quality in Course Evaluations
    (Association for Computing Machinery, 2022-11-11)
    Wambsganss, Thiemo
    ;
    Zierau, Naim
    ;
    Söllner, Matthias
    ;
    Käser, Tanja
    ;
    Koedinger, Kenneth R.
    ;
    Leimeister, Jan Marco
    Conversational agents (CAs) provide opportunities for improving the interaction in evaluation surveys. To investigate if and how a user-centered conversational evaluation tool impacts users' response quality and their experience, we build EVA - a novel conversational course evaluation tool for educational scenarios. In a field experiment with 128 students, we compared EVA against a static web survey. Our results confirm prior findings from literature about the positive effect of conversational evaluation tools in the domain of education. Second, we then investigate the differences between a voice-based and text-based conversational human-computer interaction of EVA in the same experimental set-up. Against our prior expectation, the students of the voice-based interaction answered with higher information quality but with lower quantity of information compared to the text-based modality. Our findings indicate that using a conversational CA (voice and text-based) results in a higher response quality and user experience compared to a static web survey interface.
    Type: journal article
    Journal: Proceedings of the ACM on Human-Computer Interaction (PACMHCI)
    Volume: 6
    Issue: CSCW2
    DOI: 10.1145/3555619
    URI: https://www.alexandria.unisg.ch/handle/20.500.14171/108082
    Scopus© Citations 3